From a 72 year old Ford fan thank you. In the 1980,s i drag raced a 305 CI Boss motor with the 875 CFM Auto light inline carb. First pass went 11.50 on 11.50 national record. Great times we had with that car. Thanks for the update.
For me, I'd like to know when suspension changes began to make circle racing safe enough to hit those 200+ speeds. And when did stock car racing change to "nothing at all like stock."
My fellow Ford nut here in Buffalo,N.Y. had a 427 Tunnelport in his 1967 Fairlane. It was white so I used to call it "The Galloping Ghost". What a sleeper with stock F-70 polyglas tires. It shifted out at 7300-7500 R.P.M. all day long. It had two four barrel cards and stock exhaust manifolds, yeh you read it right, stock exhaust manifolds. You heard the story about putting a hundred dollar bill on the dash. It was yours if you could reach it when the car was floored . This was a fact, as I tried a couple of times as I was pinned the the front seat and couldn't reach it. We both had a chuckle after that. We blew off more than our share of big block Chevies and a few 426 Hemi's. I say we as I was always riding shotgun. We left my 1968 428 Cobra-Jet at home on these midnight rides. Sheridan Drive was one lively two lane(each way) almost every night (1967-1972). Those were the best street racing days of my life, real old school muscle cars.Hey GM and Mopar guys, I admired some of your cool old Chevelles and Chargers RT's. Gary Flagg Buffalo, N.Y.
Doesn't mean a lot to me. I could pack a 383 B.B. dual quad into a tiny '63 Valiant and get better results pulling the front end. Big engines in a small body undoubtedly creates a consequence Which cake batter tastes better German Chocolate or Angel food. Never could stand the way Ford V-8's sounds, very hollow like something wants to break. However there may be some exceptions Just seem to be stroked wrong like one-two cylinders isn't quite timed accurately with duration. Reality, they all are just ideas from the drafting boards. Ate a lot of Fords, they all seemed to be victims of circumstance. The Honor Circle? Mercury Cougar - Ford GT350 - Well built Family cars and p/u trucks.
A 1967 Fairlane weighs in ~ 3700 lbs. , which with a driver and front seat passenger puts the weight over 4000 lbs.@@stur.7502 The car drove smooth and relatively quiet with its stock mufflers. I've never heard any Motörhead complain about the throaty roar of any American V8, your complaint is a "1st". I've never had any of my Ford engines break and that includes 260's,289's,302's, 352's, 390's, my 428CJ and an old flathead in my 1937 sedan. My 1968 1/2 428 CJ Mustang was street raced for 4 years. I floated a valve once and had to yank the head. I pulled a piece of the broken valve out the piston head, installed a new valve and was up in running that night. Hey, you like what you like, I'm just glad I lived through the best days of drag racing. Gary Flagg Buffalo, N.Y.
@@stur.7502 Another anti-Ford guy. I've heard some good ones through the years, but the sound, that's a new one. Something is about to break. lol. Ford won more big block races in NASCAR than anyone and that includes the 426. I think you've been eating something else.
@@donjennings9034 This is the way a Ford guy thinks, way way out on the fringe with a one-off out of the box experimental instead of overall production street performance. Last I heard NASCAR didn't race on the street or strip in a production automobile. Is it the driver, the car or the particular engine circumstance at NASCAR? What is Ford's big track record at the strip? I knew someone once who put a 428 Cobra Jet engine in a Ford 4x4 truck, not sure exactly why? The Air cleaner maybe? It sounded more like an un-capped I-H or AMC car? Not that I have anything particular against International Harvester or American Motors. Not to worry though, Ford will take em' all. Too bad that Fairlane model isn't still in production.
Being a Mopar fan I still love Ford's engineering. Back in the day, a Ford looked like a ford, etc. Today not so much. That's why I quit attending and watching NASCAR. NHRA is not much better as Prostock has turned into a Chevy show, At least you can still see the older cars in the Sportsman classes. Also when the Grump, The Gliddens, and Johnsons ran, they could switch brands and stay competitive. Today the pros just switch decals {lame}.
I know what you mean. I’m a Mopar Fan and AMC nut, but I’ve got nothing but respect for Fords. In fact over the years I’ve gotten my hands on about every motor built in the US. A good engine builder can get power out of all of them, and there’s a lot of power to be found from the Blue Oval Offerings.
@@kennethcohagen3539 I know where there's a 390 AMC engine. Has a Edelbrock high-rise on it. Was in a boat has those expensive polished exhaust headers on it.
I remember in 1974 I got the part number for a Ford intake manifold that was a tunnel port "type" intake for the medium riser heads. It was a single plane, dual 4 barrel intake. When I got the part number in 1974, it was supposed to be still available. I tried to order one in 1975 or 1976. I was told at the parts counter it wasn't available anymore. Its part number ended with "A" and I was told the same part number ending in "B" was available. I thought it might be an updated version, but they didn't know what the difference was. I ordered one for $250. When it arrived I saw it was a tunnel port type single plane intake manifold for medium riser heads, but it was for one 4 barrel. I thought that was even better than messing with the dual 4 barrel version. I ordered a replacement 427 cylinder block. It was a 1968 hydraulic lifter version, that included a plug and instructions as to which passage to block to use solid lifters. I also ordered a replacement 428 cylinder block. It was a heavy duty truck 391 cylinder block, that was bored out to the 428 bore and had an external oil line hole that was blocked with a threaded plug. The performance and racing "X" part numbers might not have been kept available for ten years, but made sure that service replacement parts for factory cars were available for at least 10 years after the last year the parts were used on cars, even though they were always the exact same part. The 427 factory car parts were available through 1978 and the 428 parts were available through 1980.
I remember those days I had a similar experience with different parts . I had numbers for front suspension springs for mustang's they were Trans Am racing springs but in 1976 was told they were not available. I found those springs from Meyer racing who is still in business today with his sons running it .
I remember going to Gasoline Alley in Paterson and there were about 4 or 5 tunnel port engines on pallets, ready to get blueprinted. I was picking up my Hemi that needed a sleeve and overbore, 12-1/2 pistons, etc, $1,100 dollars
Interesting post. I raced a 1967 Shelby GT500, with a 427TP, dual 4's, in SCCA, IMSA and other club circuit racing. Back in the day, I was just a poor garage racer, did all the work myself, no sponsors, but with that TP, I don't know how you could ever have any more fun. The power was incredible, I used a Dan Williams 4 spd. TC, that never broke and had to re-enforce the clutch mounting on the car, to use the heaviest clutch possible. Those were the days, I doubt that road racing will ever be what it was then, Sebring 12 was such fun, so many stories. I still have the car, although it needs some tlc and all of the TP motors, trans, spares, even have a 1966 GT 350 race car and several other Shelbys and Bosses. Had a chance to get a friend's Boss 429 complete car and spare motor, along with a GT 40, Maranello, several Shelbys and a Lola street car, but ya never do have enough sheckels, do ya. Oh well. Maybe soon, I'll start one one of the cars to get them restored, maybe the Buick GN first.
Hey You bet they are or could be valuable. I keep telling myself I should sell them, even though they are in poor shape. But, I have personal connections to each on, so it's hard to consider. One particular one, besides the 66 350, is a 1968 GT500 KR convertible, but also, with 4 spd and air, in green, blk inside, very very rare, not but a few ever made optioned that way and I believe a museum in california has three of the same. Oh also, it has the original motor, trans and rear. I have restored shelbys and boss 302's before and as crazy as it seems, I was, I sold the one's I restored, and for almost nothing at the time, I cringe everytime I think about those life's mistakes. Probably the biggest mistake I ever made on these cars, was at college in the college parking lot, I came across a 1967 427 cobra, some girl was using to go to school, she offered to sell it to me for 8K and at the time I didn't have the bread, that one kills me every time I remember it, have no idea what happened to that car, lost touch. One more was the Miami Serpentarium's owner's daughter owned a 1970 shelby GT500, white on white, with very few miles on it, perfect. I went to buy it from her, but she answered the door naked, high as a kite, so me being the nice proper guy, said I would come back the next day. Someone I knew, a female friend, got there before me and bought it for $5000. A few years later, that girl who also owned a Hertz GT350, mint, had a husband issue where she needed bond money and offer both of her shelbys for $10k cash. As it would be I was broke at the time and missed that one as well. Many more of the same purchase misses and selling when I needed to. All mistakes.@@waynejohnting2954
@MACvSOG on my honeymoon in 1975, I saw a Boss 429 for sale $1,800. It was the wrong time 😢. I later in 76 found a 63 top oiler 427 with dual quads and a medium riser intake, Canadian heads, LeMans rods, etc. and got a Cobra body & frame from a wrecking yard. Later on sold it for $10,000; I still regret that.
@@AndyGray-x1e I still have a 1967 Shelby GT500 IMSA, SCCA race car, with a 427, side oiler, Tunnel Port, dual 4, Dan Williams 4 speed, that has history at Daytona, Sebring, Atl, several others and locally at West Palm. I had so much fun with that car, oh the power and I did it all on a nickel budget, in a small gas station garage I had at the time. I really miss those days. Didn't matter if I lost, it was the the journey that was so much fun. The car hasn't been put together for over 30 years, still have all of the spare motors, lot's of holman moody stuff, I really need to clean it all up and figure out what to do with it all. Even have a few of Tom Gloy's 7eleven trans am capri parts, body parts. I was going to put together a trans am car, but never had the money to follow through. Even had a chance to buy a sweet trans am fox mustang here in Miami, from a guy we raced with, but as always I couldn't put together the funds. It was a holman moody built car, very sweet. So many opportunities.....
Very informative. Hell yea. I was lucky enough to work part in a small shop in 1997 that I was able to solely build a full Retro-fit roller cammed tunnel port for a customer. It turned out absolutely amazing. Dual 4 and all. Unfortunately the customer chose not to do a proper break in and use too hot of a plug that he thought was correct after we installed the correct plugs on assembly. Without breaking it in, he chose to do a full pull down his street and blew it up. Even his friends, that were present, testified to this in court because the dude sued the shop owner. But it was an amazing experience to build one.
@hotroddude6551 If the motor was built right it wouldn't hurt it to run a full pull down the street with it. What has to break in that would hurt the motor on a full pull?
@@nojunkwork5735 Yep. The camshaft/lifters only take 20 minutes to break in and the builder should have done that when the engine was test run after completing the build. Now, if he did a full pull with to hot a plug he might experience bad pre-ignition.
@@FRLN500 First off I think Hot Rod dude was talking out his backside and just made up that story. But that being said Hot Rod wrote that the guy blew up the motor making a full pull down his street and unless he lives on a farm where his street is a county road it is hard to imagine that it would hurt the motor. He also wrote that the motor had a roller cam in it that would require no break-in. But even if it had a flat tappet cam and he didn't burn the cam in properly that still wouldn't blow up the motor as he stated in his post.
Thanks for the video. I'm a Mopar guy and have always been really confused by all the 427's. Mopar probably would have done more to counter the 427 but they simply didn't have the money to put into R&D like Ford. The 427 was definitely a monster of a motor in all of it's iterations. These were the most exciting times in automotive history as far as I'm concerned and can you imagine where everyone would have been had GM not pulled Pontiac and Chevy out of factory backed racing?
Yes Pontiac had the infamous 421 super duty and Chevy would soon release the most popular big block platform in the world. I used to be a hardcore Ford guy but now I like em all they all have neat things about them. But with that said the Ford 427 tunnel port, had a mysterious Aura of awe that surrounded it. Even more so then the boss 429 but not quite up there with the 427 cammer.
Really appreciated the clear and comprehensive explanation on the technical side of the 427 various heads for racing. Very few men in this generation would have such extensive knowledge of Ford Engines of the 1960s and 70s, that was a long time ago. Mechanics in the average Ford Dealership would not even begin to know how to work on the big blocks of that era or know how to tune a big Holly Carburetor.
Pontiac also had their version of the "Tunnel Port". It was called the "Ram Air V. It had the same valve arraignment as tha "FE" series wedge heads, though it needs to have a special camshaft ground for that valve arraignment. Thanks for that history on the Tunnel Port FE. 👍
@@johnjohnsn7633 yea but the 302 tunnel port didn't do very good on the race track because it needed to be reved way up to like 9 grand before it started to make power & that just caused engine failure. The 289's in the gt 350 R's did better.
@@Jon-k8z Ford took the machining and assembly of the 302 Tunnel Port away from Shelby as a cost cutting measure that year. They had the engines assembled by factory line mechanics. Many feel this was a contributing factor in the engines failures. The Tunnel Port blocks would be the basis for the Boss 302 the next year which had overwhelming success.
The High Riser hood bubble was necessary because of the 4+ inch tall ram air box on top of the carbs...the High Riser will fit under the 65 Galaxie hood with the oval air cleaner if a corresponding oval is cut out of the under hood support web. Same goes for the 66 Fairlane.
Finally someone who knows what they're talking about this wheelhouse ate 12 guy don't have a goddamn clue can't pronounce people's names right doesn't know the years engines were produced
Which ever 427 fe you liked or ran street or strip, it doesn't get the respect it should. For the regular street use it's hard to beat the 428 cobra jet and still highly popular today. The Mopar 440 was also a great street motor. Sometimes just as fast on the street as some 426's .
My father talked about the tunnel port he ran for a while. He said it broke everything. That was when he was young and put all his money on an engine without having everything else capable or handling the power. He still got his 56 ford to run 11.61 with it.
Yeah especially the 4-speed toploader at the the time it was okay but if you horsed it wrong or hopped the tires you would snap the internals pretty quick 427 she was a bad baby.
@@roberthoffrichter287 he eventually got things right. But he always laughed about that tunnelport. He said he broke EVERYTHING with it. Engine mounts, seats, trannies, driveshafts. He was relatively young at the time. It taught him to get everything else right first. Then worry about power.
I raced late models on dirt in the I states, Iowa, Illinois and Indiana used lo riser and med riser which cost. $56 in 65. A friend let me use his tunnel port set up but lost some bottom end. The late Dick Trickle was a master at making 427 engines run
I used to build FE engines for a local racer in Canada. I had a love/hate for those engines. I began late, after Ford stopped building them in 1968. Although there were some parts around, the good parts were very expensive compared to the Chevrolet stuff. I just wanted to be different. I scored a large pile of used 427 Le Mans parts, so called gently used. Some of those parts were abused and raced far longer than their intended life cycle. I was in my late teens in those days and being a teen, I knew everything, LoL. I quickly realized that I was the opposite of smart. In the Le mans series where money was NO object. They would run the 427 very hard and if one blew up, the teams would just shrug their shoulders, and install a fresh one, since Ford Motor Company was supplying them with as many engines they needed. They had an obsession with winning the crown jewel of Le mans, which they DID. Holman-Moody was going full tilt to provide engines for all the Ford teams, in Le Mans and Nascar. Many engine builders became famous from working for Holman Moody, such as Robert Yates, Waddell Wilson and several others. A friend was a decent engine machinist and had a thriving business, so I had him do all the machining for me. All I had to do was double check his work and assemble the engines. First time out the engine lasted about 9 laps, before it exploded. I was a newby but not stupid. Most everything left was scrap metal. Even one of the rare cylinder heads was beyond repair. They only thing good for myself was that it was fast as hell. Even the driver said, it was awesome while it lasted. I wasn't happy at all since it badly bruised my confidence. After more hell and frustration and diminishing engine parts, I stumbled over the reason for the failures. The crank throws were hollow and sealed off by plugs and C clips. My machinist didn't remove the Crankshaft throw plugs to clean it properly and the metal and junk inside was getting into the fresh bearings. Both of us should have known but Ford was the only company that did this process that I am aware of. Frustrating and expensive lesson. Eventually, we ran out of parts and money, even though we won 3 races that year and it was getting close to the end of the season. Another friend gave us a stock 428CJ out of a Mustang to use. I thought it was a waste of time, since we could hear the valves floating at the end of the straights, but we actually won the last race of the season with it. He installed it back into his Mustang and drove it for another 5 years until he sold it. Good/bad old times.
@@wysetech2000 wow those are cool memories for your teen years. I was born in 68 but I can remember the good ole days. I love the old car days & old rock music & hippies. I had a 390 in a 72 F 250 up around 500 horse when it ran correctly & the air was really cold. Was a lot of fun. I just had stock 390 heads with good valves & springs but I ported the shit out of them. & All the other radical parts. It would be really cool to have a 427 Ford in a Fairlane or sports roof mustang or Torino now. Everything is too much money now - engine parts, restoration parts & gas
Great information that I never knew. My dad worked for a Chevy dealership from 46-69 and I after school and on weekends 67-69. Dad wasn't a racer so I was never around modifying engines or learning much about them.
I came across a guy in 1966, he had a 1963 1/2 Ford Galaxy, with Aluminum bumpers, fiber glass hood. With a 427 dual 4 barrel Holleys, screw in freeze plugs. It was one of the production cars Ford had to see to be legal for Nascar. It was a monster street racer back in the day in Philly when I was 18 yrs old.
BS. "1963.5" would be a top oiler and they did not have screw-in CORE PLUGS and there were no Holley 4-barrels in "1963.5". Carters and Rochesters were the only 4-barrels available. Not until 1964 were there any factory "lightweight" Galaxies. And the "lightweight" with aluminum and fiberglass front end parts had NOTHING to do with NASCAR. They were built for NHRA Super Stock drag racing and they were BADLY outclassed by Super Stock Dodge Darts and Plymouths even before the 426 "Race Hemi" came along when the Mopars were running 413 and 426 Max Wedge engines AND "pushbutton" 727 TorqueFlite transmissions. A Ford with a "top loader" wasn't close to competitive with them.
@@deeremeyer1749Sorry to burst your bubble but Ford started using Holley 4150 series 4 barrels in 1957 on the 312 y-blocks. They continued to use them on the high performance FE's. The 429 CJ's also came factory equipped with Holleys but the 429SCJ's were equipped with a spread bore Quadra Jet.
@@deeremeyer1749 Bob Tasca Sr ,Tasca Ford RI built the 1963.5 Galaxie lightweights with leftovers and over the counter 427's. Wallah , 64 Thunderbolts, C'mon man.
Very interesting. I knew there was a lot of history about the 427 and 429 but I didn't know the particulars. I noticed the radio in the background. My Grandparents had one like it. When I was a kid I played it a lot and it was sold still working in the late 70's when their stuff was auctioned.
I had a choice of heads for my 427 FE when we were planning the build some 30 years ago. We were wanting to keep the comp ratio down to run pump gas on street. I was told that the tunnel port head would require more octane/comp to run appropriately. The hi-riser wouldn’t fit under the hood and may also have needed more octane or more compression to run optimally. We decided on the med riser that made great power, temps were safe, started up easily on 93 oct. The FE was a cool motor.
This is an excellent description of what was happening in the late 1960s. I had an S code Cougar GT 390 4 speed car with Low Riser 427 Heads that would pull great in 3rd gear well past 90 mph for fun. It was the Bullit Green with black interior without a console. I ran it with a Shelby Cobra Tach. The 427 clutch was bullet-proof. After that I ran an Orange 1970 Boss 302 Mustang 4 speed that would rev to 7500 rpm. I built that engine with standard Ford parts and never lost to any street car. The Cougar GT 390 had much more torque!
Great video. I never knew they used restrictor plates back in 69-71. I've been a Ford Fan since I was 8 years old. I'm 73 now. My Dad belonged to NASCAR back in the early 60s and raced at all the local tracks. I wished that they would put together a Vintage Race Program with say a limited # of cars where they would race Dodge Hemis against the Ford SOHC in specially prepped 60s Fords and Dodges just to see what would happen if those cars were allowed to slug it out. Tell me that would't draw a huge crowd. I'll bet it would.
We raced Tunnel Ports, High Risers, and Medium Risers in a flat-bottom runabout. 1975-1978...We then switched to a 426 Hemi until 1981. The Hemi was from Petty Engineering
Not true. Big ports with a shorter duration / higher lift cam work excellent. The main reason GM's LS engines run so good is that even the little 4.8 has 200cc ports with a short duration / big lift cam. Cams that were once considered hot street cams are common in computer controlled engines now & GM figured out how to make over 400 tq/hp with a short duration cam & a redline of 6,000rpm in their CT400, IMCA crate motor.
It's only obvious when you look at what races Ford mostly won in the '60s that the 427 was built for all out speed. I would venture to say 80% were 1 mile or more and their dominance on Super Speedways was probably even greater prompting Richard Petty to run oversize engines which he has hinted at doing as have others from back in the day. It also didn't hurt that Ford had many HoF drivers too like David Pearson, Cale Yarborough, Lee Roy Yarbrough, Ned Jarrett, Fred Lorenzen....and Dan Gurney at Riverside😅
Thoroughly enjoyed your video. Had close relationships with some of FoMoCo's high performance engines. My uncle took my Dad and I to our first NASCAR race @ Martinsville in spring 1963. We both got the racing bug. My first car was a 64 Comet Caliente 289, 210 hp with 4 speed, 4 barrel carb. A high school friend, one year ahead of me, purchased a 67 Shelby 500 sometime in early 69. Car had been traded at dealer for 69 Boss 9. Charlie and i had both worked at a Gulf gas station through high school. He was now working full time for his father's painting company and decided to marry his high school sweetheart. As they wanted to purchase a house the Shelby was for sale and kept at the gas station where i still worked. Car got driven only out of the wash bay and returned there at closing time. Charlie knew i opened the gas station on Sunday mornings and asked me if i would come in early to take the Shelby out to put a few miles on it and "blow out" the carbon buildup. What an incentive to get up earlier on a Sunday morning after being out late on a Saturday night!, Had lots of thrills in Charlie's Shelby on Sunday morns as an interstate spur going to downtown was close by. Selling price was $2500. I could afford to buy it but my parents would NOT agree to keep me on their insurance with that car. My father was well aware of the performance potential in the hands of a still, teenage son. I kept my Comet but always regretted not being able to purchase that 500. Got drafted for Nam in Jan 71 so i missed all of the racing and performance news until discharge in Jan 73. Parents had moved from Roanoke VA to Richmond VA but was still in relationship with girlfriend in Roanoke and traveled there on weekends. Driving in to Roanoke one Friday night in June I noticed a blue mustang at local dealer. Early Sat am i checked it out...was a 70 Boss 302, medium metallic blue with blue interior, 18k on odometet. Put down a deposit that day, arranged financing upon return to Richmond and caught bus back next wkend to take possession of my car. Owned it for 35 years and reluctantly sold it in Nov 2008 as i moved to house with no garage. Had daily driver and motorcycle during Boss ownership as it had only 43k on the clock when sold. Was contacted by person who bought it from the guy i sold it to. Appears that the Boss 302 engine was removed and a regular 302 was installed, dressed up like a Boss engine. Sadly that buyer didn't have enough knowledge to determine he was being scammed but was taken in by the Boss striping, front and rear spoilers, shaker hood scoop, Hurst shifter, etc. Sad that a low mileage, 2 owner, matching numbers Boss was destroyed just because of someone's greed and scamming to pocket a big profit. From 73 through about 79 i had the pleasure of friendship with Bobby Graybill who was not only the parts mgr at the dealership where i had purchased the Boss but was also one of the transport drivers for the Wood Bros race team. Bobby would always get us into the restricted garage area after any race we attended. That privilege lasted until he gave up driving duties to spend more time at home on wkends. Occasionally got inside scoop on what was happening with Wood Bros car building and Pearson, their driver, but those "secrets" were closely guarded. Visited the Wood's shop in Stuart VA many times during those years during off wkends and off season. Leonard Wood was always hospitable and would guide us through the small shop except the dyno room was strictly off limits and probably locked. He would answer most questions and allow photos of race cars. Only met Glenn once but both were down to earth and true gentlemen. Still have place in my heart for the #21 team.
I really learned a lot from this video. Thank you for sharing your knowledge with the rest of us out here. I also enjoyed reading the comments. There are some interesting characters out there and some fella's that flat had a lot of fun in the day!!!
There were only a few Holman Moody engines on the road. But when they were, they usually took out 1st or second..... And still drove that way for years...... A 3/4 race cam from holman moody would make tears come to your eyes.
@@nojunkwork5735 Your wife says the same about you. You weren't just walkin into HM and getting their best parts. They weren't your mom... They controlled nascar. For your weak mind, a 3/4 race had better manners on the lower end, just like for a shorter track like darlington.
Great video!!! Can I suggest other historical 427 videos, perhaps the difference in rods (like Lemans, or nascar spec). I just love old ford performance engine designs.
Really cool to see info on these heads that you typically never see. One question I’ve always had: how restrictive is the tube running through the port in the intake??? I know the heads flow well, but what are the flow numbers of the intake with that big ass tube blocking the port?
Sorry but even with the cross sectional area being the same, thats just not an ideal flow path, having the air hit that tube and bend around it. That’s got to wreak havoc on the intake charge. Obviously it worked good enough, but there’s no way you can think that’s not restrictive
If they would have had aerodynamic tubing available back then like is now used for dragster wing struts, the flow loss would have been a lot less. The round tube in the middle of the port is not ideal.
@@shelbydupree6157may have even aided flow. Only way to know is test with and without. Sometimes looks are deceiving. It's why I would never date a blonde.
I remember as a teen boy working in a local garage me and my buddy used to look through the ford parts catalogs and we couldn't figure out why the low riser, medium riser, high riser and tunnel port engines were all listed as 425 HP. Obviously the 425 number was picked as a place holder of sorts but it would be cool to know what the real HP was for all four engines.
I don't know why nascar DQed the mark II mystery motor, those made power also. They didn't know what that tube in the intake port would do to the wet flow.
The 427 tunnel port ford was one of the best gasoline burning racing engines ever built believe me it gave the hemi a run for the money and we all know the hemi was all that and some but it was beatable let’s all remember it was a wedge engine so it was limited to what a hemi could breathe for what it was it was one hell of a engine
Great explanation but, should ad that Mesuim Riser style ports were what came on the 428CJ….Now do a small block Ford head from the 289/302/351 series with the various heads including the exotic 68 Trans Am Tunnel Port heads…The Rare Gurney-Weslake Indy head and the various road race intakes for the motors including the Boss 302 stuff. My buddy had a Cross Boss with the in-line Autolite carb but, never being able to get it properly tuned he traded it for a Bud Moore “mini-plenum” intake that ran awesome!
Thanks for the great video on the 427 Ford. Remember reading Hot Rod and stories of people installing Tunnel Port 427s in street going Fords. While the Tunnel Port was a fantastic race engine trying to run one on the street wasn't a whole lot of fun. Pretty cool to say you've got a 427 Tunnel Port under the hood though!
l can confirm that. l've got a 427 Tunnel Port in a 1967 Fairlane. That car is a pig on the street but is a brute at the track when the tacho is bouncing around 7000 RPM :)
Ford FE heads all flow pretty well on the exhaust side. The flow issues with exhaust on FE engines was the exhaust manifold designes on certain vehicles. The log style manifolds in the Thunderbird , Pickups and other Fords were horrible. A simple swap to headers on a 390 powered vehicle equipped with a 4 barrel really woke them up. Swapping to a 700 cfm 4 barrel holley , a Edelbrock street master and hooker headers on my 390 powered 69 f100 was like flipping on the lights in a dark room as far as performance goes. With the stock 2 barrel and log style exhaust manifolds my pickup was unbelievably poor on performance and gas mileage. It wouldn't spin a tire no matter what I did. Now its a tire frying beast even with the power consumption of the C6 automatic transmission. The truck will hunt now and my mileage improved significantly during normal driving.
Hi from down under australia. Great story thanks. I got books on those motors but didnt know the history. I cannot imagine running at those speeds. I can imagine going out and doing 150mph and having the car skating around and losing the nerve. The guys that raced them every weekend must of really had nerve to push them to those kind of speeds.
Fun to watch the progression of the technology. In later years the racers were still able to break 200 mph with the 358ci limitation AND constrictor plate under the card to further reduce air flow.
Ford was using the 406 in 1962…not until 1963 was the 427 released. You didn’t even bring up the other significant design change in the 427 FE Fords, the switch from center oiler block as found in 1963 and 1964 low and high risers, to the legendary side oiler block found on the 1965 and later SOHC, medium risers, and tunnel ports. Own a period medium rise side oiler myself.
The side oiler didn't really make more horsepower, but provided better oiling for circle track. Those engines could go to redline in no time and bent push rods regularly. Dual point ignition and no rev limiter was dangerous. Many people have a 428 top oiler, but don't know it.
@ The issue was oil starved bottom end when center oilers were subjected to sustained high rpms. With center oilers, at higher revs oil gets trapped with the valve train and thus crank doesn’t get sufficient lubrication….BOOM! Was not limited to circle track racers as it was an issue with endurance racers too who were spinning hard at places like LeMans and Daytona (road course). You are correct about power as oil starvation was not an issue with drag racers with center oilers (like Thunderbolts) as although they hit high rpms, it was for a very limited time.
Recall: Ford won the 1969 Daytona 500 with a Tunnel Port 427, beating the Chrysler hemis. Ford had the Boss 429 ready to go, but they hadn't yet complied with the NASCAR rule that it had to be available in street cars. So the Ford teams got out their TP heads and ran the race with it. Everybody was surprised, but it won.
I would agree, the 427 FE rules Lemans, NASCAR, and even the drags for a couple of years at least. The 428, which was Ford's idea of a replacement for street cars was anemic and grossly underpowered compared to the King, the 427 FE R code.
428 was a torquey long stroke mild performance engine. Smoother and dragged around big cars far better and economically. Friend has a original 7 litre manual Galaxie and it is quite a quick thing
@@ldnwholesale8552Agreed, the 428 was a great low down torque engine that would move off the line very quickly with an auto in a mid sized platform. I liked driving them, however the later 335 and 385 351 and 429 460 were easier to build and work on IMO.
Am a Mopar guy, but a very interesting video. Do the head flow 370 cfm even with the pipe to the pushrod? Thought the tube should become a restriction.
Most cylinder heads will lose cfm on the bench when you add the intake. The cross section at the tube widens just a bit. I will be flowing one soon, I'll post results
370cfm is nothing spectacular in today's world. The best Ford heads today are John Kaase's P-51 wedge heads & his Boss heads are a close second if ya want the nostalgia look of the Boss heads.
In 1978 I bought a 427 side oiler. The guy I bought it from was friends with Holman Moody. I received high riser Heads and also a set of tunnel port heads. Also had a duel quad high riser for the tunnel port, single plane manifold and a duel quad manifold for it. Sold it all in 1980 for $3300.00. Stupid me
The 63 Galaxie 427 single 4 barrel was rated at 410, and the 63 dual 4 barrels was rated at 425. Ford never updated the horsepower ratings after 1963. The hi-rise 427, and 65 Galaxie medium riser had more horsepower than the 63 engines
Love this video we ran late modle super stock and sportsman circle track we had so.e bad ass engines we had a 289 withe 351 windsor heads that we turned at 10 grrand rpms in a 1964 galaxy that was awesome won many race's in the sportsman division when we moved up to super stock we ran the 427 side oiler with highriser heads in a 1967 Fairlane and then in a 1973 Mach1 mustang won many race's we raced against a guy who ran the tunnel port heads he was fast but couldn't out drive my uncle lol the dee stroked it to a 342 cid to get more rpms but i don't think it made that much of a difference really awesome video love all of them keep them coming Fords forever brother!
Thank you for the history lesson on Ford engines I always wanted a cammer and found out the easiest way to get one is to find a 460 block and order the heads, cams, pushrods, intake and exhaust from a company in Georgia don't know if they are still around this was a few years ago
Maybe you can help me answer a question..Back in the 80's I had a FE head ( way before internet and google ) that had a stock 390 intake but over sized exhaust..I never could determine what type of head it was. I was lucky and bough a new 427 Cross boit main block new in the crate for $350 if I remember correctly and it was a fast combo..Wish I still had it.
351-C is the baddest small block engine out of all the manufacturers. It’s still killing it today on the track and streets along with the rest of the blue oval engines. Coyote is a beast!
I wonder if they had modified the exhaust port similar to the intake ports. I'm surprised someone hasn't tried to make those heads with a tunnel port exhaust.
The Hemi and the 427 FE in all flavors especially the SOHC were heavy. Imagine using Cast Iron intakes! Surprised they didn't get Aluminium heads perfected. Think of what discoveries in power that would've given them aside of the weight savings. Quietly, Jim Hall was working on his McClaren Chaparral cars using all aluminum Chevrolet Big Blocks. What a time to be alive!
GREAT video and good topic. You outline it all very well. So, Nascar essentially restricted engine development to the detriment of the fans. No wonder they've become irrelevant
Was in my early & Mid--Teens watching all this Action goin on in the drugstore Magazines.....Licensed at 15 & wanted a "Tunnel Port" "65 Comet Cyclone 4 speed real Bad !!! ....Usual Teenage story,...No money (paper route) & no Connections..... Did know wherever a 390 would fit, a 427 "Tunnel" could Be squeezed in....."Sewer Port" heads & No low/Mid range Torque,.who Cares ! ...Droppin the cluch at 6500 on 5" wheels with Screwed on wrinkle Walls was the Dream Machine !! ....No Doubt, I would've never seen 18 or graduation with my Bad judgment !!
The tunnel port was a really good head just watch the 67 daytona it even won the 69 daytona because the Boss wasn t allowed yet if i ever build a FE it would be a tunnel port not a sohc
I always wondered about those, as far as history goes. My 70' Mustang had a 428 Cobra Jet engine, which had these enormous intake valves but really small exhaust valves. The way I found out was when one of the intakes broke off at the stem and ricocheted around, destroying the engine. It's fascinating how you can get so much air into the cylinder, but it seems like so much less comes out.
It's also completely different from an engineering standpoint. On intake, you are trying to coax or draw air into the cylinder. On exhaust, when the valve opens, it has a huge amount of pressure inside the cylinder that blows it out, in addition to the puston shoving it out. Even with that, the exhaust are to small for sure
In the mid 70's, i bought a white,'67 Fairlane factory 427,dual 652 Holleys w/ 4 speed. The guy told me it came w/tunnel port heads,but another guy wanted them really bad. He bought him 2 brand new complete, medium riser heads,dual 4's,652 Holleys. That was the setup that I got. I remember it had long track bars,they were welded to the rear-end housing & bolted under the front bench sear. I don't know if this was a factory setup or not. It had 5.67 gears & the optional fiberglass hood for '67.
Very informative! Still there must have been some kind of hanky payment the rules for ford to run the tunnel port Also do you have flow numbers with and without the pushrod tube in place?? And I wonder why no one makes an aftermarket version anymore. I also wonder if anyone developed a pushrod tube that had an airplane wing type design to enhance the flow? Thank you
From a 72 year old Ford fan thank you. In the 1980,s i drag raced a 305 CI Boss motor with the 875 CFM Auto light inline carb. First pass went 11.50 on 11.50 national record. Great times we had with that car. Thanks for the update.
I’m a Chevy guy , but you are right, the 427 ford engines won races in all deferent types of circle tracks and road corses,, it was a dominant engine
Not just motor sports history, but automobile engineering as well. Very very cool!
For me, I'd like to know when suspension changes began to make circle racing safe enough to hit those 200+ speeds. And when did stock car racing change to "nothing at all like stock."
it's not the suspension it's keeping the air from under the car
My fellow Ford nut here in Buffalo,N.Y. had a 427 Tunnelport in his 1967 Fairlane. It was white so I used to call it "The Galloping Ghost". What a sleeper with stock F-70 polyglas tires. It shifted out at 7300-7500 R.P.M. all day long. It had two four barrel cards and stock exhaust manifolds, yeh you read it right, stock exhaust manifolds. You heard the story about putting a hundred dollar bill on the dash. It was yours if you could reach it when the car was floored . This was a fact, as I tried a couple of times as I was pinned the the front seat and couldn't reach it. We both had a chuckle after that.
We blew off more than our share of big block Chevies and a few 426 Hemi's. I say we as I was always riding shotgun. We left my 1968 428 Cobra-Jet at home on these midnight rides. Sheridan Drive was one lively two lane(each way) almost every night (1967-1972). Those were the best street racing days of my life, real old school muscle cars.Hey GM and Mopar guys, I admired some of your cool old Chevelles and Chargers RT's.
Gary Flagg Buffalo, N.Y.
Doesn't mean a lot to me. I could pack a 383 B.B. dual quad into a tiny '63 Valiant and get better results pulling the front end. Big engines in a small body undoubtedly creates a consequence Which cake batter tastes better German Chocolate or Angel food. Never could stand the way Ford V-8's sounds, very hollow like something wants to break. However there may be some exceptions Just seem to be stroked wrong like one-two cylinders isn't quite timed accurately with duration. Reality, they all are just ideas from the drafting boards. Ate a lot of Fords, they all seemed to be victims of circumstance.
The Honor Circle? Mercury Cougar - Ford GT350 - Well built Family cars and p/u trucks.
A 1967 Fairlane weighs in ~ 3700 lbs. , which with a driver and front seat passenger puts the weight over 4000 lbs.@@stur.7502 The car drove smooth and relatively quiet with its stock mufflers. I've never heard any Motörhead complain about the throaty roar of any American V8, your complaint is a "1st". I've never had any of my Ford engines break and that includes 260's,289's,302's, 352's, 390's, my 428CJ and an old flathead in my 1937 sedan. My 1968 1/2
428 CJ Mustang was street raced for 4 years. I floated a valve once and had to yank the head. I pulled a piece of the broken valve out the piston head, installed a new valve and was up in running that night. Hey, you like what you like, I'm just glad I lived through the best days of drag racing.
Gary Flagg Buffalo, N.Y.
@@stur.7502 Another anti-Ford guy. I've heard some good ones through the years, but the sound, that's a new one. Something is about to break. lol. Ford won more big block races in NASCAR than anyone and that includes the 426. I think you've been eating something else.
@@donjennings9034 This is the way a Ford guy thinks, way way out on the fringe with a one-off out of the box experimental instead of overall production street performance.
Last I heard NASCAR didn't race on the street or strip in a production automobile.
Is it the driver, the car or the particular engine circumstance at NASCAR?
What is Ford's big track record at the strip?
I knew someone once who put a 428 Cobra Jet engine in a Ford 4x4 truck, not sure exactly why? The Air cleaner maybe? It sounded more like an un-capped I-H or AMC car? Not that I have anything particular against International Harvester or American Motors.
Not to worry though, Ford will take em' all.
Too bad that Fairlane model isn't still in production.
@@stur.7502 They've had their share of wins, especially in pro stock. Somehow, they overcame "the sound" problem. 🤣
Near perfect description of these engines and all of the back and forth that occured at the time. American engineering at it's best. 🏁 🇺🇲
Excellent historical presentation on your part, of these unique engines, I learned quite a bit, thanks!
Being a Mopar fan I still love Ford's engineering. Back in the day, a Ford looked like a ford, etc. Today not so much. That's why I quit attending and watching NASCAR. NHRA is not much better as Prostock has turned into a Chevy show, At least you can still see the older cars in the Sportsman classes. Also when the Grump, The Gliddens, and Johnsons ran, they could switch brands and stay competitive. Today the pros just switch decals {lame}.
I don't watch NASCAR for the same reason. Cry baby Chevy owners.
Couldn't agree more. 60s really were the best of times for being somewhat relatable
I know what you mean. I’m a Mopar Fan and AMC nut, but I’ve got nothing but respect for Fords. In fact over the years I’ve gotten my hands on about every motor built in the US. A good engine builder can get power out of all of them, and there’s a lot of power to be found from the Blue Oval Offerings.
@@kennethcohagen3539 I know where there's a 390 AMC engine. Has a Edelbrock high-rise on it.
Was in a boat has those expensive polished exhaust headers on it.
Couldn't say it any better
I remember in 1974 I got the part number for a Ford intake manifold that was a tunnel port "type" intake for the medium riser heads. It was a single plane, dual 4 barrel intake. When I got the part number in 1974, it was supposed to be still available. I tried to order one in 1975 or 1976. I was told at the parts counter it wasn't available anymore. Its part number ended with "A" and I was told the same part number ending in "B" was available. I thought it might be an updated version, but they didn't know what the difference was. I ordered one for $250. When it arrived I saw it was a tunnel port type single plane intake manifold for medium riser heads, but it was for one 4 barrel. I thought that was even better than messing with the dual 4 barrel version. I ordered a replacement 427 cylinder block. It was a 1968 hydraulic lifter version, that included a plug and instructions as to which passage to block to use solid lifters. I also ordered a replacement 428 cylinder block. It was a heavy duty truck 391 cylinder block, that was bored out to the 428 bore and had an external oil line hole that was blocked with a threaded plug. The performance and racing "X" part numbers might not have been kept available for ten years, but made sure that service replacement parts for factory cars were available for at least 10 years after the last year the parts were used on cars, even though they were always the exact same part. The 427 factory car parts were available through 1978 and the 428 parts were available through 1980.
The intake manifold was commonly referred to as the Tunnel Wedge and was a great manifold. I should know as i used one on my 427 powered 68 Mustang.
I remember those days I had a similar experience with different parts . I had numbers for front suspension springs for mustang's they were Trans Am racing springs but in 1976 was told they were not available. I found those springs from Meyer racing who is still in business today with his sons running it .
Mike Maier is one awesome dude when it comes to building fast cars….He is also an exceptional driver….RIP to Bill Maier left us in 2023
back then you could get t/ports from holman & moody.
The difference between 391 & 428 is stroke not bore - mabey a little more bore.
I remember going to Gasoline Alley in Paterson and there were about 4 or 5 tunnel port engines on pallets, ready to get blueprinted. I was picking up my Hemi that needed a sleeve and overbore, 12-1/2 pistons, etc, $1,100 dollars
A lot of people don't know how much R.an D.Ford and Mopar put in at that time. Thank God for the boss 429 and John Kazi. Keeping it real even today
Wow...awesome vid to explain the 427 head variations. Thank you for posting 👍
Interesting post. I raced a 1967 Shelby GT500, with a 427TP, dual 4's, in SCCA, IMSA and other club circuit racing. Back in the day, I was just a poor garage racer, did all the work myself, no sponsors, but with that TP, I don't know how you could ever have any more fun. The power was incredible, I used a Dan Williams 4 spd. TC, that never broke and had to re-enforce the clutch mounting on the car, to use the heaviest clutch possible. Those were the days, I doubt that road racing will ever be what it was then, Sebring 12 was such fun, so many stories.
I still have the car, although it needs some tlc and all of the TP motors, trans, spares, even have a 1966 GT 350 race car and several other Shelbys and Bosses. Had a chance to get a friend's Boss 429 complete car and spare motor, along with a GT 40, Maranello, several Shelbys and a Lola street car, but ya never do have enough sheckels, do ya. Oh well.
Maybe soon, I'll start one one of the cars to get them restored, maybe the Buick GN first.
It's insane what those shelbys are selling for these days
Hey
You bet they are or could be valuable. I keep telling myself I should sell them, even though they are in poor shape. But, I have personal connections to each on, so it's hard to consider. One particular one, besides the 66 350, is a 1968 GT500 KR convertible, but also, with 4 spd and air, in green, blk inside, very very rare, not but a few ever made optioned that way and I believe a museum in california has three of the same. Oh also, it has the original motor, trans and rear. I have restored shelbys and boss 302's before and as crazy as it seems, I was, I sold the one's I restored, and for almost nothing at the time, I cringe everytime I think about those life's mistakes.
Probably the biggest mistake I ever made on these cars, was at college in the college parking lot, I came across a 1967 427 cobra, some girl was using to go to school, she offered to sell it to me for 8K and at the time I didn't have the bread, that one kills me every time I remember it, have no idea what happened to that car, lost touch.
One more was the Miami Serpentarium's owner's daughter owned a 1970 shelby GT500, white on white, with very few miles on it, perfect. I went to buy it from her, but she answered the door naked, high as a kite, so me being the nice proper guy, said I would come back the next day. Someone I knew, a female friend, got there before me and bought it for $5000. A few years later, that girl who also owned a Hertz GT350, mint, had a husband issue where she needed bond money and offer both of her shelbys for $10k cash. As it would be I was broke at the time and missed that one as well. Many more of the same purchase misses and selling when I needed to.
All mistakes.@@waynejohnting2954
@MACvSOG on my honeymoon in 1975, I saw a Boss 429 for sale $1,800. It was the wrong time 😢. I later in 76 found a 63 top oiler 427 with dual quads and a medium riser intake, Canadian heads, LeMans rods, etc. and got a Cobra body & frame from a wrecking yard. Later on sold it for $10,000; I still regret that.
@@AndyGray-x1e I still have a 1967 Shelby GT500 IMSA, SCCA race car, with a 427, side oiler, Tunnel Port, dual 4, Dan Williams 4 speed, that has history at Daytona, Sebring, Atl, several others and locally at West Palm. I had so much fun with that car, oh the power and I did it all on a nickel budget, in a small gas station garage I had at the time. I really miss those days. Didn't matter if I lost, it was the the journey that was so much fun. The car hasn't been put together for over 30 years, still have all of the spare motors, lot's of holman moody stuff, I really need to clean it all up and figure out what to do with it all. Even have a few of Tom Gloy's 7eleven trans am capri parts, body parts. I was going to put together a trans am car, but never had the money to follow through. Even had a chance to buy a sweet trans am fox mustang here in Miami, from a guy we raced with, but as always I couldn't put together the funds. It was a holman moody built car, very sweet. So many opportunities.....
Very informative. Hell yea. I was lucky enough to work part in a small shop in 1997 that I was able to solely build a full Retro-fit roller cammed tunnel port for a customer. It turned out absolutely amazing. Dual 4 and all. Unfortunately the customer chose not to do a proper break in and use too hot of a plug that he thought was correct after we installed the correct plugs on assembly. Without breaking it in, he chose to do a full pull down his street and blew it up. Even his friends, that were present, testified to this in court because the dude sued the shop owner. But it was an amazing experience to build one.
@hotroddude6551 If the motor was built right it wouldn't hurt it to run a full pull down the street with it. What has to break in that would hurt the motor on a full pull?
@@nojunkwork5735 Yep. The camshaft/lifters only take 20 minutes to break in and the builder should have done that when the engine was test run after completing the build. Now, if he did a full pull with to hot a plug he might experience bad pre-ignition.
@@FRLN500 First off I think Hot Rod dude was talking out his backside and just made up that story. But that being said Hot Rod wrote that the guy blew up the motor making a full pull down his street and unless he lives on a farm where his street is a county road it is hard to imagine that it would hurt the motor. He also wrote that the motor had a roller cam in it that would require no break-in. But even if it had a flat tappet cam and he didn't burn the cam in properly that still wouldn't blow up the motor as he stated in his post.
Thanks for the video. I'm a Mopar guy and have always been really confused by all the 427's. Mopar probably would have done more to counter the 427 but they simply didn't have the money to put into R&D like Ford. The 427 was definitely a monster of a motor in all of it's iterations. These were the most exciting times in automotive history as far as I'm concerned and can you imagine where everyone would have been had GM not pulled Pontiac and Chevy out of factory backed racing?
Yes Pontiac had the infamous 421 super duty and Chevy would soon release the most popular big block platform in the world. I used to be a hardcore Ford guy but now I like em all they all have neat things about them. But with that said the Ford 427 tunnel port, had a mysterious Aura of awe that surrounded it. Even more so then the boss 429 but not quite up there with the 427 cammer.
@@brianfalkner108never even seen a427 ford cammer cept for plastic 1 on my shelf
Really appreciated the clear and comprehensive explanation on the technical side of the 427 various heads for racing. Very few men in this generation would have such extensive knowledge of Ford Engines of the 1960s and 70s, that was a long time ago. Mechanics in the average Ford Dealership would not even begin to know how to work on the big blocks of that era or know how to tune a big Holly Carburetor.
Thank you for your comment. Part of my reason for making this video is to keep the information alive, and try to get it to the next generation.
except they used medium riser at LaMans
@@spambeanie2 yes in 1965 and 1966, but a tunnel port head in 1967.
Pontiac also had their version of the "Tunnel Port". It was called the "Ram Air V. It had the same valve arraignment as tha "FE" series wedge heads, though it needs to have a special camshaft ground for that valve arraignment.
Thanks for that history on the Tunnel Port FE. 👍
Ford also had a 1968 302 Tunnel Port it ran in SCCA ... B Production if memory serves me.
@@johnjohnsn7633
Yes! You're right! 👍
@@johnjohnsn7633 yea but the 302 tunnel port didn't do very good on the race track because it needed to be reved way up to like 9 grand before it started to make power & that just caused engine failure. The 289's in the gt 350 R's did better.
The Tunnel port engineer that worked for ford went to work for Pontiac.
@@Jon-k8z Ford took the machining and assembly of the 302 Tunnel Port away from Shelby as a cost cutting measure that year. They had the engines assembled by factory line mechanics. Many feel this was a contributing factor in the engines failures. The Tunnel Port blocks would be the basis for the Boss 302 the next year which had overwhelming success.
The High Riser hood bubble was necessary because of the 4+ inch tall ram air box on top of the carbs...the High Riser will fit under the 65 Galaxie hood with the oval air cleaner if a corresponding oval is cut out of the under hood support web.
Same goes for the 66 Fairlane.
Finally someone who knows what they're talking about this wheelhouse ate 12 guy don't have a goddamn clue can't pronounce people's names right doesn't know the years engines were produced
Which ever 427 fe you liked or ran street or strip, it doesn't get the respect it should. For the regular street use it's hard to beat the 428 cobra jet and still highly popular today. The Mopar 440 was also a great street motor. Sometimes just as fast on the street as some 426's .
My father talked about the tunnel port he ran for a while. He said it broke everything. That was when he was young and put all his money on an engine without having everything else capable or handling the power. He still got his 56 ford to run 11.61 with it.
Yeah especially the 4-speed toploader at the the time it was okay but if you horsed it wrong or hopped the tires you would snap the internals pretty quick 427 she was a bad baby.
@@roberthoffrichter287 he eventually got things right. But he always laughed about that tunnelport. He said he broke EVERYTHING with it. Engine mounts, seats, trannies, driveshafts. He was relatively young at the time. It taught him to get everything else right first. Then worry about power.
I raced late models on dirt in the I states, Iowa, Illinois and Indiana used lo riser and med riser which cost. $56 in 65. A friend let me use his tunnel port set up but lost some bottom end. The late Dick Trickle was a master at making 427 engines run
High rpm need big ports that don't help much at less rpm
Very helpful lesson into Ford motorsport development and history. Thanks for posting!
I used to build FE engines for a local racer in Canada. I had a love/hate for those engines. I began late, after Ford stopped building them in 1968. Although there were some parts around, the good parts were very expensive compared to the Chevrolet stuff. I just wanted to be different.
I scored a large pile of used 427 Le Mans parts, so called gently used. Some of those parts were abused and raced far longer than their intended life cycle. I was in my late teens in those days and being a teen, I knew everything, LoL. I quickly realized that I was the opposite of smart.
In the Le mans series where money was NO object. They would run the 427 very hard and if one blew up, the teams would just shrug their shoulders, and install a fresh one, since Ford Motor Company was supplying them with as many engines they needed.
They had an obsession with winning the crown jewel of Le mans, which they DID. Holman-Moody was going full tilt to provide engines for all the Ford teams, in Le Mans and Nascar. Many engine builders became famous from working for Holman Moody, such as Robert Yates, Waddell Wilson and several others.
A friend was a decent engine machinist and had a thriving business, so I had him do all the machining for me. All I had to do was double check his work and assemble the engines.
First time out the engine lasted about 9 laps, before it exploded. I was a newby but not stupid. Most everything left was scrap metal. Even one of the rare cylinder heads was beyond repair. They only thing good for myself was that it was fast as hell. Even the driver said, it was awesome while it lasted.
I wasn't happy at all since it badly bruised my confidence.
After more hell and frustration and diminishing engine parts, I stumbled over the reason for the failures. The crank throws were hollow and sealed off by plugs and C clips. My machinist didn't remove the Crankshaft throw plugs to clean it properly and the metal and junk inside was getting into the fresh bearings. Both of us should have known but Ford was the only company that did this process that I am aware of. Frustrating and expensive lesson.
Eventually, we ran out of parts and money, even though we won 3 races that year and it was getting close to the end of the season. Another friend gave us a stock 428CJ out of a Mustang to use. I thought it was a waste of time, since we could hear the valves floating at the end of the straights, but we actually won the last race of the season with it. He installed it back into his Mustang and drove it for another 5 years until he sold it. Good/bad old times.
@@wysetech2000 wow those are cool memories for your teen years. I was born in 68 but I can remember the good ole days. I love the old car days & old rock music & hippies. I had a 390 in a 72 F 250 up around 500 horse when it ran correctly & the air was really cold. Was a lot of fun. I just had stock 390 heads with good valves & springs but I ported the shit out of them. & All the other radical parts. It would be really cool to have a 427 Ford in a Fairlane or sports roof mustang or Torino now. Everything is too much money now - engine parts, restoration parts & gas
@@Jon-k8zinflation is a bitch that never goes away
Great information that I never knew. My dad worked for a Chevy dealership from 46-69 and I after school and on weekends 67-69. Dad wasn't a racer so I was never around modifying engines or learning much about them.
Very informative and interesting. Great work and memory, the video is as perfect as can be. God bless.
Thank you!
You're really good at this. Thank you very much.
I came across a guy in 1966, he had a 1963 1/2 Ford Galaxy, with Aluminum bumpers, fiber glass hood. With a 427 dual 4 barrel Holleys, screw in freeze plugs. It was one of the production cars Ford had to see to be legal for Nascar. It was a monster street racer back in the day in Philly when I was 18 yrs old.
BS. "1963.5" would be a top oiler and they did not have screw-in CORE PLUGS and there were no Holley 4-barrels in "1963.5". Carters and Rochesters were the only 4-barrels available. Not until 1964 were there any factory "lightweight" Galaxies. And the "lightweight" with aluminum and fiberglass front end parts had NOTHING to do with NASCAR. They were built for NHRA Super Stock drag racing and they were BADLY outclassed by Super Stock Dodge Darts and Plymouths even before the 426 "Race Hemi" came along when the Mopars were running 413 and 426 Max Wedge engines AND "pushbutton" 727 TorqueFlite transmissions. A Ford with a "top loader" wasn't close to competitive with them.
@@deeremeyer1749Sorry to burst your bubble but Ford started using Holley 4150 series 4 barrels in 1957 on the 312 y-blocks. They continued to use them on the high performance FE's. The 429 CJ's also came factory equipped with Holleys but the 429SCJ's were equipped with a spread bore Quadra Jet.
@@deeremeyer1749 Bob Tasca Sr ,Tasca Ford RI built the 1963.5 Galaxie lightweights with leftovers and over the counter 427's. Wallah , 64 Thunderbolts, C'mon man.
Very interesting. I knew there was a lot of history about the 427 and 429 but I didn't know the particulars. I noticed the radio in the background. My Grandparents had one like it. When I was a kid I played it a lot and it was sold still working in the late 70's when their stuff was auctioned.
I had a choice of heads for my 427 FE when we were planning the build some 30 years ago. We were wanting to keep the comp ratio down to run pump gas on street. I was told that the tunnel port head would require more octane/comp to run appropriately. The hi-riser wouldn’t fit under the hood and may also have needed more octane or more compression to run optimally. We decided on the med riser that made great power, temps were safe, started up easily on 93 oct. The FE was a cool motor.
Best explanation I have heard on this.
👍
Good video! Really appreciate showing cylinder heads.
Very interesting & I thank you for sharing your experience & knowledge
Thank you Sir
Boss 429 was my favorite, my neighbor had one new, when I was a kid. Green Mustang Boss.
1969
I loved those 427s, I had a 427 side oiler that was dealer installed in my 68 Shelby GT 500, sold it in 76, dont I wish I had kept it.,
This is an excellent description of what was happening in the late 1960s. I had an S code Cougar GT 390 4 speed car with Low Riser 427 Heads that would pull great in 3rd gear well past 90 mph for fun. It was the Bullit Green with black interior without a console. I ran it with a Shelby Cobra Tach. The 427 clutch was bullet-proof. After that I ran an Orange 1970 Boss 302 Mustang 4 speed that would rev to 7500 rpm. I built that engine with standard Ford parts and never lost to any street car. The Cougar GT 390 had much more torque!
N cubes too
Great video. I never knew they used restrictor plates back in 69-71. I've been a Ford Fan since I was 8 years old. I'm 73 now. My Dad belonged to NASCAR back in the early 60s and raced at all the local tracks. I wished that they would put together a Vintage Race Program with say a limited # of cars where they would race Dodge Hemis against the Ford SOHC in specially prepped 60s Fords and Dodges just to see what would happen if those cars were allowed to slug it out. Tell me that would't draw a huge crowd. I'll bet it would.
Cammer too much $ to risk in a race in 2024
We raced Tunnel Ports, High Risers, and Medium Risers in a flat-bottom runabout. 1975-1978...We then switched to a 426 Hemi until 1981. The Hemi was from Petty Engineering
Thanks for that excellent 'walk thru history'. I was not a racer so it was impossible to know all the details back in the day.
Which Ford big block had the largest intake ports, The Boss 429 or the 427 Tunnel port? Both heads had massive ports!
The trouble with big port heads is you have to turn high RPM to get any port velocity....
the few guys that tried to run the Boss 429 Mustangs had the same problem. No bottom end. A Cobra Jet Mustang would kill it.
Unless you build a big engine. Get a set of tunnel ports on an engine north of 450 cubic inches and the ride gets wild.
Not true. Big ports with a shorter duration / higher lift cam work excellent. The main reason GM's LS engines run so good is that even the little 4.8 has 200cc ports with a short duration / big lift cam. Cams that were once considered hot street cams are common in computer controlled engines now & GM figured out how to make over 400 tq/hp with a short duration cam & a redline of 6,000rpm in their CT400, IMCA crate motor.
@@carolnelson9269 Yet Holman Moody had a destroked 396 Tunnelport that won 2 championships for David Pearson .
@@kinikinrdnot on top end
It's only obvious when you look at what races Ford mostly won in the '60s that the 427 was built for all out speed. I would venture to say 80% were 1 mile or more and their dominance on Super Speedways was probably even greater prompting Richard Petty to run oversize engines which he has hinted at doing as have others from back in the day.
It also didn't hurt that Ford had many HoF drivers too like David Pearson, Cale Yarborough, Lee Roy Yarbrough, Ned Jarrett, Fred Lorenzen....and Dan Gurney at Riverside😅
Thoroughly enjoyed your video. Had close relationships with some of FoMoCo's high performance engines. My uncle took my Dad and I to our first NASCAR race @ Martinsville in spring 1963. We both got the racing bug. My first car was a 64 Comet Caliente 289, 210 hp with 4 speed, 4 barrel carb. A high school friend, one year ahead of me, purchased a 67 Shelby 500 sometime in early 69. Car had been traded at dealer for 69 Boss 9. Charlie and i had both worked at a Gulf gas station through high school. He was now working full time for his father's painting company and decided to marry his high school sweetheart. As they wanted to purchase a house the Shelby was for sale and kept at the gas station where i still worked. Car got driven only out of the wash bay and returned there at closing time. Charlie knew i opened the gas station on Sunday mornings and asked me if i would come in early to take the Shelby out to put a few miles on it and "blow out" the carbon buildup. What an incentive to get up earlier on a Sunday morning after being out late on a Saturday night!, Had lots of thrills in Charlie's Shelby on Sunday morns as an interstate spur going to downtown was close by. Selling price was $2500. I could afford to buy it but my parents would NOT agree to keep me on their insurance with that car. My father was well aware of the performance potential in the hands of a still, teenage son. I kept my Comet but always regretted not being able to purchase that 500. Got drafted for Nam in Jan 71 so i missed all of the racing and performance news until discharge in Jan 73. Parents had moved from Roanoke VA to Richmond VA but was still in relationship with girlfriend in Roanoke and traveled there on weekends. Driving in to Roanoke one Friday night in June I noticed a blue mustang at local dealer. Early Sat am i checked it out...was a 70 Boss 302, medium metallic blue with blue interior, 18k on odometet. Put down a deposit that day, arranged financing upon return to Richmond and caught bus back next wkend to take possession of my car. Owned it for 35 years and reluctantly sold it in Nov 2008 as i moved to house with no garage. Had daily driver and motorcycle during Boss ownership as it had only 43k on the clock when sold. Was contacted by person who bought it from the guy i sold it to. Appears that the Boss 302 engine was removed and a regular 302 was installed, dressed up like a Boss engine. Sadly that buyer didn't have enough knowledge to determine he was being scammed but was taken in by the Boss striping, front and rear spoilers, shaker hood scoop, Hurst shifter, etc. Sad that a low mileage, 2 owner, matching numbers Boss was destroyed just because of someone's greed and scamming to pocket a big profit. From 73 through about 79 i had the pleasure of friendship with Bobby Graybill who was not only the parts mgr at the dealership where i had purchased the Boss but was also one of the transport drivers for the Wood Bros race team. Bobby would always get us into the restricted garage area after any race we attended. That privilege lasted until he gave up driving duties to spend more time at home on wkends. Occasionally got inside scoop on what was happening with Wood Bros car building and Pearson, their driver, but those "secrets" were closely guarded. Visited the Wood's shop in Stuart VA many times during those years during off wkends and off season. Leonard Wood was always hospitable and would guide us through the small shop except the dyno room was strictly off limits and probably locked. He would answer most questions and allow photos of race cars. Only met Glenn once but both were down to earth and true gentlemen. Still have place in my heart for the #21 team.
I really learned a lot from this video. Thank you for sharing your knowledge with the rest of us out here. I also enjoyed reading the comments. There are some interesting characters out there and some fella's that flat had a lot of fun in the day!!!
My neighbor had run them for years and still has some. These engines were unreal.
I always was taught by friends the 426 HEMI and big block chevys were it! I gotta listen to this!!
Bang for the buck,BBC has always been it !! Now the LS is the new weapon of choice for low$
The 427 sohc ford made more power,so much so that it was outlawed by NASCAR, nhra super stock, and pro stock
There were only a few Holman Moody engines on the road.
But when they were, they usually took out 1st or second..... And still drove that way for years......
A 3/4 race cam from holman moody would make tears come to your eyes.
@@kramnull8962 3/4 cam, couldn't they afford a full came? It must have been down on power with just 3/4 of a cam.
@@nojunkwork5735 Your wife says the same about you.
You weren't just walkin into HM and getting their best parts. They weren't your mom...
They controlled nascar.
For your weak mind, a 3/4 race had better manners on the lower end, just like for a shorter track like darlington.
Great video!!! Can I suggest other historical 427 videos, perhaps the difference in rods (like Lemans, or nascar spec). I just love old ford performance engine designs.
Wonderful synopsis on this 427 engine. Thanks for laying that all lout for us.
Really cool to see info on these heads that you typically never see.
One question I’ve always had: how restrictive is the tube running through the port in the intake???
I know the heads flow well, but what are the flow numbers of the intake with that big ass tube blocking the port?
It's not that restrictive. The cross section of the manifold was still adequate.
Sorry but even with the cross sectional area being the same, thats just not an ideal flow path, having the air hit that tube and bend around it. That’s got to wreak havoc on the intake charge.
Obviously it worked good enough, but there’s no way you can think that’s not restrictive
If they would have had aerodynamic tubing available back then like is now used for dragster wing struts, the flow loss would have been a lot less.
The round tube in the middle of the port is not ideal.
@@shelbydupree6157may have even aided flow.
Only way to know is test with and without.
Sometimes looks are deceiving.
It's why I would never date a blonde.
As soon as I get the intake here, I will flow the head with and with out the intake and post results
Man that was awesome info! Everyone thinks I know a ton of FORD history but they would be disappointed. Plan on watching a lot more of your stuff 😉 👍🏽
Thabks Mike!
This is very well done, I love ford history.
Me too
My heart beats die the Ford FE 427 Engine. Best classic design, unbelievable Sound and a lot of Power.
I have the Pontiac version of this "type" engine, like the chivvies L88 heads.
They are the #722 Round port heads with WINTERS Intake.
I remember as a teen boy working in a local garage me and my buddy used to look through the ford parts catalogs and we couldn't figure out why the low riser, medium riser, high riser and tunnel port engines were all listed as 425 HP. Obviously the 425 number was picked as a place holder of sorts but it would be cool to know what the real HP was for all four engines.
I don't know why nascar DQed the mark II mystery motor, those made power also. They didn't know what that tube in the intake port would do to the wet flow.
The 427 tunnel port ford was one of the best gasoline burning racing engines ever built believe me it gave the hemi a run for the money and we all know the hemi was all that and some but it was beatable let’s all remember it was a wedge engine so it was limited to what a hemi could breathe for what it was it was one hell of a engine
I just want to know where I can get a crate version of this 427 FE engine for a cobra project.
I am not aware of a crate version of the tunnel port. I have had to peice it together as I can find parts here amd there
Great explanation but, should ad that Mesuim Riser style ports were what came on the 428CJ….Now do a small block Ford head from the 289/302/351 series with the various heads including the exotic 68 Trans Am Tunnel Port heads…The Rare Gurney-Weslake Indy head and the various road race intakes for the motors including the Boss 302 stuff. My buddy had a Cross Boss with the in-line Autolite carb but, never being able to get it properly tuned he traded it for a Bud Moore “mini-plenum” intake that ran awesome!
Sir the 428 cj head has the same intake port size as the 1963 1/2 427 low riser.
Love Fords 🤌🏻
Thanks for the great video on the 427 Ford. Remember reading Hot Rod and stories of people installing Tunnel Port 427s in street going Fords. While the Tunnel Port was a fantastic race engine trying to run one on the street wasn't a whole lot of fun. Pretty cool to say you've got a 427 Tunnel Port under the hood though!
This one will be on the street this summer!
@@Wheelhouse812 Please keep us posted, that'll be a blast 😃
l can confirm that. l've got a 427 Tunnel Port in a 1967 Fairlane. That car is a pig on the street but is a brute at the track when the tacho is bouncing around 7000 RPM :)
Ford FE heads all flow pretty well on the exhaust side. The flow issues with exhaust on FE engines was the exhaust manifold designes on certain vehicles. The log style manifolds in the Thunderbird , Pickups and other Fords were horrible. A simple swap to headers on a 390 powered vehicle equipped with a 4 barrel really woke them up. Swapping to a 700 cfm 4 barrel holley , a Edelbrock street master and hooker headers on my 390 powered 69 f100 was like flipping on the lights in a dark room as far as performance goes. With the stock 2 barrel and log style exhaust manifolds my pickup was unbelievably poor on performance and gas mileage. It wouldn't spin a tire no matter what I did. Now its a tire frying beast even with the power consumption of the C6 automatic transmission. The truck will hunt now and my mileage improved significantly during normal driving.
Hi from down under australia. Great story thanks. I got books on those motors but didnt know the history. I cannot imagine running at those speeds. I can imagine going out and doing 150mph and having the car skating around and losing the nerve. The guys that raced them every weekend must of really had nerve to push them to those kind of speeds.
Fun to watch the progression of the technology.
In later years the racers were still able to break 200 mph with the 358ci limitation AND constrictor plate under the card to further reduce air flow.
Friend of mine has tunnel port heads on his 66 Merc Cyclone GT. He needs to put 4:88's in it instead of the 4:11s he has and it would really rip.
Ford was using the 406 in 1962…not until 1963 was the 427 released.
You didn’t even bring up the other significant design change in the 427 FE Fords, the switch from center oiler block as found in 1963 and 1964 low and high risers, to the legendary side oiler block found on the 1965 and later SOHC, medium risers, and tunnel ports. Own a period medium rise side oiler myself.
Good content for another video!
The side oiler didn't really make more horsepower, but provided better oiling for circle track. Those engines could go to redline in no time and bent push rods regularly. Dual point ignition and no rev limiter was dangerous. Many people have a 428 top oiler, but don't know it.
@ The issue was oil starved bottom end when center oilers were subjected to sustained high rpms. With center oilers, at higher revs oil gets trapped with the valve train and thus crank doesn’t get sufficient lubrication….BOOM! Was not limited to circle track racers as it was an issue with endurance racers too who were spinning hard at places like LeMans and Daytona (road course). You are correct about power as oil starvation was not an issue with drag racers with center oilers (like Thunderbolts) as although they hit high rpms, it was for a very limited time.
Recall: Ford won the 1969 Daytona 500 with a Tunnel Port 427, beating the Chrysler hemis. Ford had the Boss 429 ready to go, but they hadn't yet complied with the NASCAR rule that it had to be available in street cars. So the Ford teams got out their TP heads and ran the race with it. Everybody was surprised, but it won.
I would agree, the 427 FE rules Lemans, NASCAR, and even the drags for a couple of years at least. The 428, which was Ford's idea of a replacement for street cars was anemic and grossly underpowered compared to the King, the 427 FE R code.
428 was a torquey long stroke mild performance engine. Smoother and dragged around big cars far better and economically. Friend has a original 7 litre manual Galaxie and it is quite a quick thing
@@ldnwholesale8552Agreed, the 428 was a great low down torque engine that would move off the line very quickly with an auto in a mid sized platform.
I liked driving them, however the later 335 and 385 351 and 429 460 were easier to build and work on IMO.
I love the 385 series big block. @@rossawood5075
What a great history lesson!
Am a Mopar guy, but a very interesting video. Do the head flow 370 cfm even with the pipe to the pushrod? Thought the tube should become a restriction.
many racers to this day add epoxy to those intake ports to make them smaller. They’re actually too big!
Most cylinder heads will lose cfm on the bench when you add the intake. The cross section at the tube widens just a bit. I will be flowing one soon, I'll post results
370cfm is nothing spectacular in today's world. The best Ford heads today are John Kaase's P-51 wedge heads & his Boss heads are a close second if ya want the nostalgia look of the Boss heads.
In 1978 I bought a 427 side oiler. The guy I bought it from was friends with Holman Moody. I received high riser Heads and also a set of tunnel port heads. Also had a duel quad high riser for the tunnel port, single plane manifold and a duel quad manifold for it. Sold it all in 1980 for $3300.00. Stupid me
Great explanation - cheers.
Thanks man. Great video. Big Ford fan. Cheers
Great video, love the history and tech.
I watched the 289 one & now this one. They are both good! I suggest doing the clevland. That might be another good one I know I would like to see.
Coming up
Also when you port, polish those intake manifolds, you greatly improve performance!
Mopar had several versions of the hemi head also. Square port was street / production., They had oval ports on NASCAR engines.
I didn't know that! Thanks for the post
Bb chev come round n square as well
awesome video! Really great information. thanks
The 63 Galaxie 427 single 4 barrel was rated at 410, and the 63 dual 4 barrels was rated at 425. Ford never updated the horsepower ratings after 1963. The hi-rise 427, and 65 Galaxie medium riser had more horsepower than the 63 engines
Some say the Hi=Riser had 550hp out of the factory and over 600 with a blueprint .Thunderbolts were fast as delivered from the dealer .
Love this video we ran late modle super stock and sportsman circle track we had so.e bad ass engines we had a 289 withe 351 windsor heads that we turned at 10 grrand rpms in a 1964 galaxy that was awesome won many race's in the sportsman division when we moved up to super stock we ran the 427 side oiler with highriser heads in a 1967 Fairlane and then in a 1973 Mach1 mustang won many race's we raced against a guy who ran the tunnel port heads he was fast but couldn't out drive my uncle lol the dee stroked it to a 342 cid to get more rpms but i don't think it made that much of a difference really awesome video love all of them keep them coming Fords forever brother!
Thank you for the history lesson on Ford engines I always wanted a cammer and found out the easiest way to get one is to find a 460 block and order the heads, cams, pushrods, intake and exhaust from a company in Georgia don't know if they are still around this was a few years ago
Cammer don't need pushrods silly boy
@rogerdodrill4733 thanks for the update
Maybe you can help me answer a question..Back in the 80's I had a FE head ( way before internet and google ) that had a stock 390 intake but over sized exhaust..I never could determine what type of head it was. I was lucky and bough a new 427 Cross boit main block new in the crate for $350 if I remember correctly and it was a fast combo..Wish I still had it.
I can't thank you enough, Ron from Bakersfield, CA
351-C is the baddest small block engine out of all the manufacturers. It’s still killing it today on the track and streets along with the rest of the blue oval engines. Coyote is a beast!
You could get a long block tunnel port engine from over the counter
I wonder if they had modified the exhaust port similar to the intake ports. I'm surprised someone hasn't tried to make those heads with a tunnel port exhaust.
The Hemi and the 427 FE in all flavors especially the SOHC were heavy. Imagine using Cast Iron intakes! Surprised they didn't get Aluminium heads perfected. Think of what discoveries in power that would've given them aside of the weight savings.
Quietly, Jim Hall was working on his McClaren Chaparral cars using all aluminum Chevrolet Big Blocks. What a time to be alive!
GREAT video and good topic. You outline it all very well. So, Nascar essentially restricted engine development to the detriment of the fans. No wonder they've become irrelevant
Great vid, never to old to learn
Excellent history! nicely done thanks!
Was in my early & Mid--Teens watching all this Action goin on in the drugstore Magazines.....Licensed at 15 & wanted a "Tunnel Port" "65 Comet Cyclone 4 speed real Bad !!! ....Usual Teenage story,...No money (paper route) & no Connections..... Did know wherever a 390 would fit, a 427 "Tunnel" could Be squeezed in....."Sewer Port" heads & No low/Mid range Torque,.who Cares ! ...Droppin the cluch at 6500 on 5" wheels with Screwed on wrinkle Walls was the Dream Machine !! ....No Doubt, I would've never seen 18 or graduation with my Bad judgment !!
The tunnel port was a really good head just watch the 67 daytona it even won the 69 daytona because the Boss wasn t allowed yet if i ever build a FE it would be a tunnel port not a sohc
Just a clarification. the '60s, Ford's badge was still the Ford Crest. The Blue Oval came much later.
THE ENGINEERS AT FORD WERE BEYOND BRILLIANT.
Okay, firstly I'd like to know how and why you have these heads if they're so rare? And what makes you so special that you have them?
Great video with lots of interesting information.
Thank you for your effort.
Glad you enjoyed it!
My dad still has his RAM AIR V Pontiac.
I always wondered about those, as far as history goes. My 70' Mustang had a 428 Cobra Jet engine, which had these enormous intake valves but really small exhaust valves. The way I found out was when one of the intakes broke off at the stem and ricocheted around, destroying the engine. It's fascinating how you can get so much air into the cylinder, but it seems like so much less comes out.
It's also completely different from an engineering standpoint. On intake, you are trying to coax or draw air into the cylinder. On exhaust, when the valve opens, it has a huge amount of pressure inside the cylinder that blows it out, in addition to the puston shoving it out.
Even with that, the exhaust are to small for sure
No positive pressure to push air in ,need big valve. Hot expanding gas ,go out small hole easier
Thank you for the video and the information it's good stuff to know
In the mid 70's, i bought a white,'67 Fairlane factory 427,dual 652 Holleys w/ 4 speed. The guy told me it came w/tunnel port heads,but another guy wanted them really bad. He bought him 2 brand new complete, medium riser heads,dual 4's,652 Holleys. That was the setup that I got. I remember it had long track bars,they were welded to the rear-end housing & bolted under the front bench sear. I don't know if this was a factory setup or not. It had 5.67 gears & the optional fiberglass hood for '67.
If it was thunderbolt, might have trackbars, regular fairlane not .whole front glass on t bolt, hood fenders, bumper everything
Man that was some good shit on engines. I've watched 4 videos in a roll and not a bit boring. Like I say that was some good shit .. Great job.
Very interesting, thank you!
Very informative! Still there must have been some kind of hanky payment the rules for ford to run the tunnel port
Also do you have flow numbers with and without the pushrod tube in place??
And I wonder why no one makes an aftermarket version anymore.
I also wonder if anyone developed a pushrod tube that had an airplane wing type design to enhance the flow?
Thank you