Nice to see a Pontiac motor. My family worked for Pontiac for years. Grandad even worked on the aluminium swiss cheese Super-Dutys in the early sixties.
I grew up working on Pontiacs with my Dad we both love them !! My Dad is currently in the hospital with congestive heart failure fighting to get better seeing this video brought tears to my eyes but I needed this Thank you Nick and everyone at Nicks Garage !!! Best of Luck from Tennessee
My Dad passed in 1993 he had a 67 GTO in 72 the timing cover developed a coolant leak which of course killed the engine we found a good replacement engine changed it out in the driveway and put headers on it oh the memories Thanks Nick !
The fact of Nick showing the entire world what he does and his extraordinary knowledge of old school american muscle engines mixed with the newer technology of his dyno is spectacularly interesting to me. Thank you Nick. I hope we get to watch you for many years to come. Love you guys.
Thanks for another great video!!! Back in the 80's my dad would get so mad at me. I was just a teen at the time and I would go through his spare carbs and steal all the secondary metering rods out of them to tune my GTO. I would steal the main rods and jets out of Rochester Dual Jets which were just the front half of a Quadrajet. They always had #74 or #75 main jets compared with anywhere from #67 to #72's on the regular Quadrajets. The main rods were also thinner on the Dual Jets. I ran a best of 12.98 with my old GTO back in the mid 80's so it was tuned pretty good for a high school kid!
Good points. I've always been a Q jet fan, and have witnessed the price increases lately. Grabbing tomorrow a trio of Q jets, headers and performance mufflers for $50 total, so there's still deals out there on Q jets. Edit: was supposed to, but the seller never bothered to show up. That was a 4 hr round trip wasted. and sellers wonder why interested parties ask, "is this still available" and other questions :) but Q jets are still cheap if you look--I bent a primary needle rebuilding the one on my 4-4-2, and rather than pay $29 + shipping for a new one, I went thru my shelf instead to find one from the carbs I got back when they were $5 in the dirt, $10 on the table at swap meets. Everyone wanted a Holley and just gave these things away.
My electric bill is up 23% from last year. Fuel ⛽️ per gallon here in Central NY 4.34 for 87 , 4.45 for 89 , 4.99 for 93, 5.19 for 90 non ethanol. Pretty soon it will be essential trips only no joy rides any more sadly. I my fill my caprice ppv and drive it on weekends but not everyday. 455, sounds awesome at idle. It sounds so much smoother with the new cam and carb. That's interesting you showed me something I didn't know about Rochester carbs. Even know I had a book on them and rebuilt a few of them ty. 390 hp. isn't bad at all for a street driver. The tq. Is what moves the car anyway. Smiles 😃 per gallon ☺️ ! Thank you sir for all the information & thank the team for all the footage. Stay safe.
Nick, you been International for awhile and I love you are getting the Credit and Fame you deserve so much !!!!!!! You are one of a kind ,friendly , helpful to others ,and willing to share your knowledge .....As I said before you are one of the BEST here on UA-cam Nick . God Bless yall and take care . 🙂
Good evening Nick and George. I've gotten into a habit of watching Nick's Garage in the evening on Monday's, so I can relax with a cup of coffee. You and George have come so far from the early days and have gotten better and better as the years, and the projects have gone by. All the while you have made us feel like we're part of a big and happy family. Merci pour tout ce que vous faites, en particulier la magie que vous faites sur ces muscle cars que nous connaissons et aimons tous au fil des ans. Personne ne le fait mieux que Nick's Garage !
Nick...we did experiment at the track years ago, and completely removed the secondary rods and hangers from a Pontiac engine. it ran the same time, with slightly higher mph, meaning it made more HP with the secondary rods/hangers completely removed ! on the 470 RA V tunnel port motor, I tried 3 carbs, an 800cfm Qjet, 750 CFM Holley list 3310, and an 1150 Holley Dominator, on the street, road tests. the Qjet, I had to remove both primary AND secondary rods/hangers, to get enough fuel in the motor at higher rpm, and the tunnel ram/tunnel port cylinder heads would suck the Qjet dry at high rpm, because the fuel bowl on a Qjet is so small. it ran out of fuel even with an electric pusher pump at tank, and mechanical pump on engine. yet- the Qjet had best low-midrange driveability, mileage. the 1150 Dominator was terrible at low-midrange, but had the most high end power above 5000 rpm. the 750 Holley did everything pretty good across the board, best idle, easiest to tune, so was the best compromise, that's what I ran. I still have that tweaked Qjet somewhere...it was Buick 800 cfm center, with Pontiac top/baseplate. but...just so you know, a Qjet will run, and run good, with no rods or hangers in it at all. and you can jet the front barrels like any other carb, up or down- providing the engine has that level appetite for fuel, which this one did. somewhere I have a can of Qjet rods, primary springs, hangers, and actually have the best "B" hanger which raises the secondary rods the highest out of the holes. the hangers are lettered, B is richest, C is leaner, so on... I also tried a vintage 1000 cfm Carter Competition Thermoquad on that RA V engine, it is basically a souped up Qjet on steroids, with dual floats, dual needle valves, dual feeds like a Holley, it solved that starvation problem. But the Holley 4 bbl still was best overall.
Installed a pair of custom thin secondary rods, .024, and later on had removed them completely. Test after test, hardly any change, and if any, a couple of HP.
I started with a 780 vacuum secondary 3310 as a replacement for the Qjet on my 67 GTO.....it wasn't a noticeable difference on the street but when the DP 750 came out I slipped that on. Much cleaner throttle response......but with my setup I wished that I had gone with the 850. Magazine tests also showed that above 34 degrees advance the oil temperature spiked. I ran 33 degrees with an Accel dual point with total advance at 2400. The GTO's ran too hot stock as the radiators weren't big enough to also have ac. They also reponded well to the 1.65 rocker arms.....
The dyno room may spark the new viewer's curiosity, but it is your personality and work ethic that make people like me subscribe and continue to watch your channel. You have a very cool head & never seem to get upset about anything. Keep the videos rolling Nick.
The valve covers should be chrome maybe they were to rusted to save. Those are ram air exhaust manifolds there almost as good as headers but he doesn't have ram air heads
Those beautiful exhaust manifolds are one reason why Ram Air Pontiacs do so well at the Pure Stock Muscle Car Drags. Most performance carmakers assumed that the first thing owners would do is throw the manifolds away and install headers. Pontiac made sure that you didn’t need to.
I love Nick's work wish we had him here in Va. Love These 455 engines had one in a 1970 442 ram air made great torque and horse power. Im also a mopar Guy. Great job Nick.
I recurve a HEI distributor to duplicate the highest output 350 corvette engine. I shortened the advance curve and all adjustments to the vacuum advance. Placed in a modified 350 chevy engine to the surprise of the owner the power increase gave him wheel hoping on hard launches. Distributor modifications are always almost never done. But done properly you can gain power, engine response quickens and normal a plus on mpg .
Gooooood Monday morning, Nick and crew!!!! That’s one torquey Pontiac: Olds and Buick were often the same, with truckloads of torque at the lower rpm levels. This’ll be a great all-around street engine. Nick, I believe it’s your open, honest and authentic approach to what you do and present to us viewers, that has made and is making you so popular AROUND THE WORLD!!! And George, your voice is the narrative signature for these great productions!!! Keep up the excellence, guys, and happy week to you all!!!
@@NicksGarage yessir!!! To all the fantastic people who watch the videos and live shows, you rock!!! And I’ve been telling people about Nick’s garage and hoping to add to the numbers!!
You might could give a set of Doug,s Headers a try. A buddy and me put some on a 68 Firebird . These fell on, we put them in from the top. Best headers I,ve ever seen. Thanks for the show.
Nick, you did a great job explaining the carbs way of delivering the fuel in full throttle. I had a 72-W-30 Hurst Olds Cutlass with a comp cam & headers, curbed the ignition. She was a handfull at full throttle. You had to make sure she was rolling straight, loved that car. Be careful & be safe.
Im a little late watching this Monday's show. I was glued to a documentary about Herb Mc Candless. Fantastic and I highly recommend it to anyone who likes drag racing and it's early years. Especially interesting for Mopar fans.
The 1976 Pontiac engine color is Oldsmobile metallic blue. 1977 was the first year for "corporate" blue. Great dyno session Nick. Thanks for sharing because we all learn together.
In my 60 years of wrenching on cars and carburetors I'm glad I can relive the fun by watching your videos. Unfortunately for me I did not have the luxury of a dyno. I had to do everything with the engines in the cars. As you say on occasion, "no matter." It's the end result that does matter. I am now going to "fire up" another one of your excellent videos. And yes, I am a subscriber.
Cool engine ,it will be a great street engine with 500 ft lbs. Really like the look of those factory cast iron exhaust manifolds. Thanks as always Nick.
Good Morning Nick & George, beaut looking & sounding poncho Nick & certainly runs real sweet. George a beaut video showing an overhead view of the carburetor working. Thanks guy's and have a beaut week.
Nick your world famous! I really enjoyed the commentary. This runup did more for me than my first cup of coffee. Lol. I'd like to use the run for a ringtone! I'm the 455HO Poncho guy.
Those Rochesters were excellent carbs. Not exactly gas efficient but they could provide fuel to make HP! They were pretty easy to work on too. Ahh... the good old days of wrenching.
Thank you Nick for making such a great show. Your dyno room videos are the best around. I grew up around Rochester Carbs. My Dad rebuilt hundreds of those Carbs. He knew them and liked them better than any other, because they gave you economy, and power in the secondaries. Watching them open on the video is what makes your show the best. All the classic muscle cars and regular cars too make the show real. Thank you for giving us something good to watch during these tough times we are in.
Nick, I owned a ’78 Firebird “Poncho” but by then the horsepower and torque numbers were really watered down due to tightening emission requirements for newer vehicles. I became self-taught on Rochester carburetor overhaul when I took on clean up and install of a parts kit. My best accomplishment was fixing a binding secondary air valve shaft on a Rochester E4MC carburetor for my ’86 Oldsmobile Cutlass Supreme that I also owned at that time.
@MoparDan, that is cool Dan . It's is always rewarding figuring something out and making it work right and better . 78 Firebirds are nice too !!! Best Regards and take care .
I wish I had this 455 in my 71 Grand Prix back in 1986, I might have been able to beat that 66 Shelby GT350 in a drag race. My 455 was rated at 325 SAE net HP with 455 ft lbs of torque. Thank you for the show Nick, you are the science professor of the automobile world.
Nick I think you’re a machine shop angle thank you for teaching me how to put cam berries in your show is my favorite entertainment 👍🎃👍I wish you all the best 🏆🏆🏆🛠️
Hi nick & company, in this crazy world we're living in, I love watching your videos, such a great for me! Love Melissa, Nick, George and all the rest of the crew. You together do a wonderful job! Bring some sanity to my crazy world! Looking forward to the next one!!!
Nick, those H.O. Pontiac exhaust manifolds work as well as my three tube headers. Plus you get more clearance under the car. I'm switching to them on my 400.
Thanks again Mate" Compression on the engines after around 1973 especially the big blocks were terrible but they still had good torque and were easy to get breathing better but we didn,t have parts like we do now............ i remember a 1974 396021F 455 olds 4bbl engine i bought used was rated at 220hp and used more fuel than a WW2 tank i had the engine in a Holden Monaro.. Pontiac made some great engines and i was told years ago the Pontiac 400 Ram air engine had the biggest rochesters on them CFM wise. How true i dont know. I still have a set of 500ci caddy metering rods given to me by a buick spare parts shop in Sydney Australia in 1979. Seems like yesterday. Thanks Nick great engine mate.
Fantastic and great to see you again! To me it seem a Rochester carb is a more complicated design than say Holley. Those metering rods design is a great simple idea.
The Qjet is a more advanced design, not pretty though. For daily driving it's was superior to most Holley's. For performance, particularly with a manual Holley FTW.
I worked on the quadrajets many years ago. Great carb. But has a few issues. Polyurethane floats would get gas logged causing flooding. Replace that float every time. Also never over tighten the needle seat. Can strip threads. Can get repair oversize threads if that happens. Also wears where throttle shaft goes through. No brass bushings. Machine shop could repair that. Also the plugs under metering wells can leak. Some kits have a rubber like thinger that fits into cavity on lower throttle body and gets compressed when bowl is tightened sealing up leaking plugs.
I wish someone would make an updated version of a quadrajet. Edelbrock has there av whatever it's called but they are to small for a built engine. Holley just go ahead and kiss whatever resemblance of fuel mileage goodbye. Not to mention none of them have "the sound"😂😂 We just need a prettier modern version of a quadrajet that you don't need to disassemble to tune.
Solid build with a nice sounding idle yet great vacuum. I've had a few quadrajets on the dyno over the years, and even with having 8 to 10 core carbs to rob parts from, I think I only found 3 different pairs of secondary rods. For anyone looking for a "performance" Rochester, I've been very happy with the "JET" brand remanufactured carbs. Keep in mind the D.A. once that engine is in the car and driving on an average spring day will be a bit richer, likely right in your target range of A/F.
Save the hangers for the secondary jets as they are identified by a letter , an A hanger would be the richest ,(holds the jets higher out of the carb) a Z hanger would be the leanest. There were many different letters used over the years.
@@basilcarroll9729 I knew there were different hangers but had no reference, information like what you stated is all but lost. I assume this is a tuning device in terms of mixture during transition of the air door, but once wide open the total jet area remains the same between hangers, is that correct? Thanks!
@@yarrdayarrdayarrda As I understand it, the hangers hold the jets from idle to full throttle higher .They are lettered B-V with .005 difference in height between letters. Yes for factory tunning purposes. A Quadrajet with .073 primary jets is not necessarily richer than a carb with .071 primary jets. It was the over all tuning to get the carb where they wanted. Also the tips of the secondary rods are tapered so if they are pulled up higher there is more jet area.
@@basilcarroll9729 Thanks for the information. I can't think of a single carb design that is more difficult to tune the primary side in terms of roll pins, screws, the choke rod, etc. Plus the hope the lid gasket doesn't rip.
I've been running a lunati solid lifter cam in my 455 for over 20 years. I love it. Most people think I'm nuts running a solid in a pontiac. But with the lifter restrictors, I've never had a problem with starvation from too much oil on the top end
I really enjoy this mechanic's session. I know of the metering rods. A 400 Chrysler with the Thermoquad,...has more metering rods,....6 metering rods! Thanks 😊!
Giasou Nikola, Can't keep a good Poncho down, the old story " There are no substitute for Cube ". You got to be happy with the numbers & getting your dyno back. Your number 1 Fan in Australia Louis Kats from Melbourne Australia ☺ 👍 ❤
its a sweet deal to see you tame da poncho nick. dad was pro pontiac. ya gotta take a little liking to those 455ci pontys. after all shes one of chryslers best competitors. thanks you guys,,
My first car was a 76 Grand Prix and that's when I started getting interested in Pontiac motors and GTOs. Dont own no Pontiac now but maybe in the future. My dream cars, a 73 GTO, a 76 Bonneville and 2 77 Can Ams.
Nick might have a different opinion of Pontiac power if he had an engine with the best heads Pontiac made. Huge difference with the round port ram air heads.
I always learn something when I watch your channel. My last experience with a carb swap was on Camaro 350 from stock Rochester q uad jet to a Holly 650 .. direct bolt on mod. Without much fiddling around on the Holly's fuel mix it really seemed to provide so much more power.
Hello Nick and Crew! A little late to the show today but I always make the time to get more MoPar (and Pontiac) knowledge from the KIng of MoPar Muscle!
Nick, your right putting on headers can be tricky. Sometimes I think 🤔 I'd rather pull the motor & put them on , then drop the motor back. Good point 👉, Nick!
Hi Nick, I used to have a 77 Trans Am with a 1970 455 .030 over XF block, 96 Heads. The headers that worked well I had purchased from Ken Crocie of HO Racing (no longer available)... Tri-Y headers that fit well, hugged the engine without interfering with the steering or starter. I think the Tri-Y's from Hedman Hedders might also work out for your client.
Thanks for the follow-up testing Nick! I appreciate you giving us a baseline so to speak by using the factory style divided-runner cast iron exhaust manifolds and Q-Jet on this undersquare engine.
Hmm...as I recall (sort of), there's a few more games the owner could play, with the secondaries. I think the Buick and Cad 850's came with a secondary hanger that had enough meat to drill the holes higher to get to the "thin" part of the rod faster. There were also higher ratio secondary hanger cams (the plastic piece that lifts the hanger), but I think those were aftermarket units. I don't recall finding any different ones in junkyards.
yeah with an F body and that torque it shall accelerate with less gearing and may even get a boost in mpg if its a lightweight+ 450 hp starts giving anything with tires a real bad problem anyway (so does low down torque hahahaha) who needs more HP on the street? torque baby , torque , all the way yeaH !
Hey Nick ,George, and Krew , Good Morning to all . Love seeing the ol Tin Indian making noise and I fully agree with you Nick about the headers and putting it over 400 hp . Sure Good to start my day at your garage. Enjoy the dyno days too . I remember the earlier Pontiacs engines were painted a green color which had a sparkle to it and them using Wolf Head Oil back in those days . Nick ,do you remember what the green color was called for the earlier Pontiac engines ?
@@nickpanaritis4122 Hey Nick , Thank-you for the reply . For some reason I was thinking it was a greener tint to it . But I knew you would have the correct answer . I like the earlier color on the Tin Indians, but I believe in doing the way it came from the factory and to specs . Thats one thing I love about how you do things ,there is no guessing, by the factory specs and attention to detail all the time . Do it right the 1st time . It was fun to see the 455 get its final test done and pretty good numbers too ...I'm now wanting to see what the early 50s Hemi you have in the shop will do when you get it done . I don't know who you have doing the block working and cleaning, but they sure have the old hemi block looking great . I truly enjoy all the dynos you do and the knowledge ,detail ,and the years of experience you show when doing them . Like I said before, you are a Master Master Mechanic hands down . Sorry for getting long winded Nick . Always a pleasure to talk with you and I very much appreciate your time Nick to respond to me . I know you are a Super Busy Man . God Bless you and your Family, and be safe . Best Regards.
Great video, Nick. I like to see dyno results in street trim, the manifolds that are installed on the car. With an exhaust system connected, we see diminishing differences between headers, and a free breathing stock "HO" exhaust manifold. These Pontiac engines with large valve heads (389 400, 421, and 455) produce very flat torque curves, and are extremely responsive on the street. By the time (some) other high performance engines develop horsepower, the Pontiac has already developed gobs of torque and horsepower, very quickly. it's not always all about max horsepower that an engine builds, it's how quickly it can build horsepower. Throttle response makes a car more drivable, a more exciting driving experience.
This is why I like custom ground cams from people that understand what it takes to get the best out of each brand. At the end of the day, all engines are the same.....pistons go up and down, crank goes round and round ( quoted from the great Bob Glidden )
It's the 455 Pontiac's final Dyno day It's certainly come a long way Previous horsepower attempts have not gone to plan So now installed is a competition cam Nick has uprated the set up with an 800 cfm carburettor because Nick is a horsepower proffessor There's no time for resting there's always more dyno testing on the Superflow dyno well worth investing in Which cam and carb will be the best only way to find out is a dyno test This pontiac looks superclean but it runs a little lean So Nick is fettling the fuel stream Todays weather was not great and horses it can take but this pontiac was solid make no mistake Nick's Garage every Monday set the time and date
Back in the 1970's and 80's HO Racing was big into Pontiacs. Once they were flogging their 455SD trans am at the track, accidentally left out the secondary metering rods and posted their best time ever. The big Pontiac's need more fuel to make max horsepower. A different carburetor on this engine might have gotten it over 400 HP? For reference, in 1969 the highest rated Pontiac engine was the 428 HO @ 390 HP, with a Qjet. A 455 with a larger bore and same stroke should be out performing the 428 with ease.
@@robertstout6980 the 428 was called the "Perfect Pontiac". However today aftermarket blocks have changed everything, but are expensive. Much appreciate the history lesson on H.O. Racing. I was given the grand tour in 1987. I was 19. They were building a 455 SD. They also had a turbo on another motor. '74 TA Red in the next bay, waiting for the 455 SD. I was a kid at the candy store!
Loved the video. Reminds of my youth when I had a '71 GTO with a 400 manual trans, a Chevy 12 bolt with 4.10 gears. I built that motor a bit more radical than this one and wish I could have put it on a dyno to see what the actual power output was. I had a Crane Fireball Cam (28428) in it. Lots of power for a heavy car. I still have the cam specification sheet I wish I still had the car.
I love these comparison videos. They show how these engines respond to changes. The dyno does not lie. Great work as always George. Can’t wait to see what’s next on the dyno. Have a great week Nick and crew.
I tried to order a Lunati cam during the pandemic. Ended up going with something else because they were unfortunately very backlogged on orders. Can't wait to see the difference...watching now.
Damn Nick! Those ole 455 Pontiac motors ARE frickin Torque Monsters! I put a 71 455 out of a Grand Prix in my 65 Chevy short box OEM divorced transfer case 4X4 pickup back in the mid 80's! That truck was A Stump puller .....just sayin.
Great video Nick, Love to see some Pontiacs on the Dyno. Just a quick comment on the engine color though GM corporate isn't the correct color for 1976. In that year its supposed to be more of a metallic blue.
@@nickpanaritis4122 Actually I also have a 1976 455 4speed T/A and the engine in my signature pic is the correct color for 1976. Pontiac changed the blues they used several times over the years. and in 1977 they switched to the final color which is GM corporate Blue. The 1975-1976 color is pretty much impossible to find in a spray can these days though, especially in Canada. I got a can at the Pontiac Nationals in Ohio a few years back and brought it home with me. Also you could just get it mixed up at a body shop it is PPG/ Ditzler Blue Poly 14817.
Heard a long time ago that Mickey Thompson had made some hemi heads for Pontiac. I believe there’s an ad for them in old Hot Rod magazines. They mustn’t have taken off at all. Never hear about them really. Anyway this is a nice 455, great job Nick. On to the next one! Pontiac and Buick 455’s check. Now for an Olds!
15 horsepower at the flywheel for all that time and work doesn't seem worth it to me. You would probably never notice the difference when it's in the car
Nice to see a Pontiac motor. My family worked for Pontiac for years. Grandad even worked on the aluminium swiss cheese Super-Dutys in the early sixties.
I grew up working on Pontiacs with my Dad we both love them !! My Dad is currently in the hospital with congestive heart failure fighting to get better seeing this video brought tears to my eyes but I needed this Thank you Nick and everyone at Nicks Garage !!! Best of Luck from Tennessee
Thank you Mark. All the best to you and your dad.
Sending the best to your Dad, You, and your whole family!
My Dad passed in 1993 he had a 67 GTO in 72 the timing cover developed a coolant leak which of course killed the engine we found a good replacement engine changed it out in the driveway and put headers on it oh the memories Thanks Nick !
@@DrGo-bw2jy that means a lot thank you 🙏
@@kwhite145 we definitely gotta cherish the ones we love and the memories!!
The fact of Nick showing the entire world what he does and his extraordinary knowledge of old school american muscle engines mixed with the newer technology of his dyno is spectacularly interesting to me. Thank you Nick. I hope we get to watch you for many years to come. Love you guys.
Thanks for another great video!!! Back in the 80's my dad would get so mad at me. I was just a teen at the time and I would go through his spare carbs and steal all the secondary metering rods out of them to tune my GTO. I would steal the main rods and jets out of Rochester Dual Jets which were just the front half of a Quadrajet. They always had #74 or #75 main jets compared with anywhere from #67 to #72's on the regular Quadrajets. The main rods were also thinner on the Dual Jets. I ran a best of 12.98 with my old GTO back in the mid 80's so it was tuned pretty good for a high school kid!
Good points. I've always been a Q jet fan, and have witnessed the price increases lately. Grabbing tomorrow a trio of Q jets, headers and performance mufflers for $50 total, so there's still deals out there on Q jets.
Edit: was supposed to, but the seller never bothered to show up. That was a 4 hr round trip wasted. and sellers wonder why interested parties ask, "is this still available" and other questions :) but Q jets are still cheap if you look--I bent a primary needle rebuilding the one on my 4-4-2, and rather than pay $29 + shipping for a new one, I went thru my shelf instead to find one from the carbs I got back when they were $5 in the dirt, $10 on the table at swap meets. Everyone wanted a Holley and just gave these things away.
Ha! I got so tired of my Dad raiding the carbs i switched to Holley's.
I could listen to this guy all day.
My electric bill is up 23% from last year.
Fuel ⛽️ per gallon here in Central NY
4.34 for 87 , 4.45 for 89 , 4.99 for 93, 5.19 for 90 non ethanol.
Pretty soon it will be essential trips only no joy rides any more sadly.
I my fill my caprice ppv and drive it on weekends but not everyday.
455, sounds awesome at idle.
It sounds so much smoother with the new cam and carb.
That's interesting you showed me something I didn't know about Rochester carbs. Even know I had a book on them and rebuilt a few of them ty.
390 hp. isn't bad at all for a street driver. The tq. Is what moves the car anyway.
Smiles 😃 per gallon ☺️ !
Thank you sir for all the information & thank the team for all the footage.
Stay safe.
Nick, you been International for awhile and I love you are getting the Credit and Fame you deserve so much !!!!!!! You are one of a kind ,friendly , helpful to others ,and willing to share your knowledge .....As I said before you are one of the BEST here on UA-cam Nick . God Bless yall and take care . 🙂
Thanks Sarge!
Us old school Q-jet users used to go rob the rods from 472 or 500 caddys for the really thin tips..
Good evening Nick and George. I've gotten into a habit of watching Nick's Garage in the evening on Monday's, so I can relax with a cup of coffee. You and George have come so far from the early days and have gotten better and better as the years, and the projects have gone by. All the while you have made us feel like we're part of a big and happy family. Merci pour tout ce que vous faites, en particulier la magie que vous faites sur ces muscle cars que nous connaissons et aimons tous au fil des ans. Personne ne le fait mieux que Nick's Garage !
Dr. Nick thanks for the 2nd dyno show on the Pontiac 455, and that overhead shot on the Rochester at full throttle,well done, cheers.
Nick...we did experiment at the track years ago, and completely removed the secondary rods and hangers from a Pontiac engine. it ran the same time, with slightly higher mph, meaning it made more HP with the secondary rods/hangers completely removed ! on the 470 RA V tunnel port motor, I tried 3 carbs, an 800cfm Qjet, 750 CFM Holley list 3310, and an 1150 Holley Dominator, on the street, road tests. the Qjet, I had to remove both primary AND secondary rods/hangers, to get enough fuel in the motor at higher rpm, and the tunnel ram/tunnel port cylinder heads would suck the Qjet dry at high rpm, because the fuel bowl on a Qjet is so small. it ran out of fuel even with an electric pusher pump at tank, and mechanical pump on engine. yet- the Qjet had best low-midrange driveability, mileage. the 1150 Dominator was terrible at low-midrange, but had the most high end power above 5000 rpm. the 750 Holley did everything pretty good across the board, best idle, easiest to tune, so was the best compromise, that's what I ran. I still have that tweaked Qjet somewhere...it was Buick 800 cfm center, with Pontiac top/baseplate.
but...just so you know, a Qjet will run, and run good, with no rods or hangers in it at all. and you can jet the front barrels like any other carb, up or down- providing the engine has that level appetite for fuel, which this one did. somewhere I have a can of Qjet rods, primary springs, hangers, and actually have the best "B" hanger which raises the secondary rods the highest out of the holes. the hangers are lettered, B is richest, C is leaner, so on...
I also tried a vintage 1000 cfm Carter Competition Thermoquad on that RA V engine, it is basically a souped up Qjet on steroids, with dual floats, dual needle valves, dual feeds like a Holley, it solved that starvation problem. But the Holley 4 bbl still was best overall.
A w31 olds had no power valve and metering rods for the primaries it looked like a small freeze plug here the power valve should of been poor mileage
The older 3310 Hollies were one of the best overall carburetors you can buy back years ago I had one that worked on any car I put it on
Installed a pair of custom thin secondary rods, .024, and later on had removed them completely. Test after test, hardly any change, and if any, a couple of HP.
I started with a 780 vacuum secondary 3310 as a replacement for the Qjet on my 67 GTO.....it wasn't a noticeable difference on the street but when the DP 750 came out I slipped that on. Much cleaner throttle response......but with my setup I wished that I had gone with the 850. Magazine tests also showed that above 34 degrees advance the oil temperature spiked. I ran 33 degrees with an Accel dual point with total advance at 2400. The GTO's ran too hot stock as the radiators weren't big enough to also have ac. They also reponded well to the 1.65 rocker arms.....
Love the torque numbers on this Poncho! Almost 400 hp should make for some fun on the street. Thank you Nick for another great Dyno presentation!
The dyno room may spark the new viewer's curiosity, but it is your personality and work ethic that make people like me subscribe and continue to watch your channel. You have a very cool head & never seem to get upset about anything. Keep the videos rolling Nick.
I don't know if anybody's ever told you this but you got the best camera guy on UA-cam
Wow! Thank you.
That blue is gorgeous, and those headers are a cool shape - thanks for showing us this great motor
The valve covers should be chrome maybe they were to rusted to save. Those are ram air exhaust manifolds there almost as good as headers but he doesn't have ram air heads
Pontiac dropped the chrome valve covers in 76.
Those beautiful exhaust manifolds are one reason why Ram Air Pontiacs do so well at the Pure Stock Muscle Car Drags. Most performance carmakers assumed that the first thing owners would do is throw the manifolds away and install headers. Pontiac made sure that you didn’t need to.
I love Nick's work wish we had him here in Va. Love These 455 engines had one in a 1970 442 ram air made great torque and horse power. Im also a mopar Guy. Great job Nick.
Professional grade videos and advice. If Netflix hasn't already approached you, you should approach them.
I recurve a HEI distributor to duplicate the highest output 350 corvette engine. I shortened the advance curve and all adjustments to the vacuum advance. Placed in a modified 350 chevy engine to the surprise of the owner the power increase gave him wheel hoping on hard launches. Distributor modifications are always almost never done. But done properly you can gain power, engine response quickens and normal a plus on mpg .
Gooooood Monday morning, Nick and crew!!!! That’s one torquey Pontiac: Olds and Buick were often the same, with truckloads of torque at the lower rpm levels. This’ll be a great all-around street engine. Nick, I believe it’s your open, honest and authentic approach to what you do and present to us viewers, that has made and is making you so popular AROUND THE WORLD!!! And George, your voice is the narrative signature for these great productions!!! Keep up the excellence, guys, and happy week to you all!!!
Thank you Joel. And don’t forget our incredible, passionate viewers. Like you, they make the channel.
@@NicksGarage yessir!!! To all the fantastic people who watch the videos and live shows, you rock!!! And I’ve been telling people about Nick’s garage and hoping to add to the numbers!!
I love Pontiac. The 1970's cars are the best.
You might could give a set of Doug,s Headers a try. A buddy and me put some on a 68 Firebird . These fell on, we put them in from the top. Best headers I,ve ever seen. Thanks for the show.
Nick, you did a great job explaining the carbs way of delivering the fuel in full throttle. I had a 72-W-30
Hurst Olds Cutlass with a comp cam & headers, curbed the ignition. She was a handfull at full
throttle. You had to make sure she was rolling straight, loved that car. Be careful & be safe.
Nice video. Back in ‘76 I had a Super Duty 455 built for me by H. O. Racing Specialties in Lawndale Calif. What a monster that motor was.
Im a little late watching this Monday's show. I was glued to a documentary about Herb Mc Candless. Fantastic and I highly recommend it to anyone who likes drag racing and it's early years. Especially interesting for Mopar fans.
The 1976 Pontiac engine color is Oldsmobile metallic blue. 1977 was the first year for "corporate" blue. Great dyno session Nick. Thanks for sharing because we all learn together.
In my 60 years of wrenching on cars and carburetors I'm glad I can relive the fun by watching your videos. Unfortunately for me I did not have the luxury of a dyno. I had to do everything with the engines in the cars. As you say on occasion, "no matter." It's the end result that does matter. I am now going to "fire up" another one of your excellent videos. And yes, I am a subscriber.
Cool engine ,it will be a great street engine with 500 ft lbs. Really like the look of those factory cast iron exhaust manifolds. Thanks as always Nick.
I though they were pretty slick as well
Good Morning Nick & George, beaut looking & sounding poncho Nick & certainly runs real sweet. George a beaut video showing an overhead view of the carburetor working. Thanks guy's and have a beaut week.
Nick your world famous! I really enjoyed the commentary. This runup did more for me than my first cup of coffee. Lol. I'd like to use the run for a ringtone! I'm the 455HO Poncho guy.
Glad you enjoyed! Thanks Rick.
Awesome show for a Monday morning , had a Q-jet on a 283 on a 4 speed "64 Elcamino , felt like a volcanic explosion when I opened all 4 barrels up !
That sound, you don't forget that sound. Especially if you flipped the air cleaner lid over so you got more air in and more sound out.
Those Rochesters were excellent carbs. Not exactly gas efficient but they could provide fuel to make HP! They were pretty easy to work on too. Ahh... the good old days of wrenching.
Got my coffee in my Nick's Garage coffee mug and I'm going to enjoy the show!
Rock on!
Good comparison nick everybody likes to no the difference in cams what works in different engines thanksnick
Thank you Nick for making such a great show. Your dyno room videos are the best around. I grew up around Rochester Carbs. My Dad rebuilt hundreds of those Carbs. He knew them and liked them better than any other, because they gave you economy, and power in the secondaries. Watching them open on the video is what makes your show the best. All the classic muscle cars and regular cars too make the show real. Thank you for giving us something good to watch during these tough times we are in.
i love the dyno videos especialy when theres a comparison cam or carburators or headers vs manifolds etc
Nick, I owned a ’78 Firebird “Poncho” but by then the horsepower and torque numbers were really watered down due to tightening emission requirements for newer vehicles. I became self-taught on Rochester carburetor overhaul when I took on clean up and install of a parts kit. My best accomplishment was fixing a binding secondary air valve shaft on a Rochester E4MC carburetor for my ’86 Oldsmobile Cutlass Supreme that I also owned at that time.
@MoparDan, that is cool Dan . It's is always rewarding figuring something out and making it work right and better . 78 Firebirds are nice too !!! Best Regards and take care .
I wish I had this 455 in my 71 Grand Prix back in 1986, I might have been able to beat that 66 Shelby GT350 in a drag race. My 455 was rated at 325 SAE net HP with 455 ft lbs of torque. Thank you for the show Nick, you are the science professor of the automobile world.
Nick I think you’re a machine shop angle thank you for teaching me how to put cam berries in your show is my favorite entertainment 👍🎃👍I wish you all the best 🏆🏆🏆🛠️
Hi nick & company, in this crazy world we're living in, I love watching your videos, such a great for me! Love Melissa, Nick, George and all the rest of the crew. You together do a wonderful job! Bring some sanity to my crazy world! Looking forward to the next one!!!
Thanks so much! We appreciate you.
thanks nick for your pontiac work for the pontiac community!
Nick, those H.O. Pontiac exhaust manifolds work as well as my three tube headers. Plus you get more clearance under the car. I'm switching to them on my 400.
Thanks again Mate" Compression on the engines after around 1973 especially the big blocks were terrible but they still had good torque and were easy to get breathing better but we didn,t have parts like we do now............ i remember a 1974 396021F 455 olds 4bbl engine i bought used was rated at 220hp and used more fuel than a WW2 tank i had the engine in a Holden Monaro.. Pontiac made some great engines and i was told years ago the Pontiac 400 Ram air engine had the biggest rochesters on them CFM wise. How true i dont know. I still have a set of 500ci caddy metering rods given to me by a buick spare parts shop in Sydney Australia in 1979. Seems like yesterday. Thanks Nick great engine mate.
good morning nick just got to love the sound of a big block great video have a great week
Fantastic and great to see you again! To me it seem a Rochester carb is a more complicated design than say Holley. Those metering rods design is a great simple idea.
The Qjet is a more advanced design, not pretty though. For daily driving it's was superior to most Holley's. For performance, particularly with a manual Holley FTW.
I worked on the quadrajets many years ago. Great carb. But has a few issues. Polyurethane floats would get gas logged causing flooding. Replace that float every time. Also never over tighten the needle seat. Can strip threads. Can get repair oversize threads if that happens. Also wears where throttle shaft goes through. No brass bushings. Machine shop could repair that. Also the plugs under metering wells can leak. Some kits have a rubber like thinger that fits into cavity on lower throttle body and gets compressed when bowl is tightened sealing up leaking plugs.
I wish someone would make an updated version of a quadrajet. Edelbrock has there av whatever it's called but they are to small for a built engine. Holley just go ahead and kiss whatever resemblance of fuel mileage goodbye. Not to mention none of them have "the sound"😂😂 We just need a prettier modern version of a quadrajet that you don't need to disassemble to tune.
No better way to start a Monday off than watching Nick! Thanks for posting your video(s) too!
Glad you like them! Thanks for watching!
Solid build with a nice sounding idle yet great vacuum. I've had a few quadrajets on the dyno over the years, and even with having 8 to 10 core carbs to rob parts from, I think I only found 3 different pairs of secondary rods. For anyone looking for a "performance" Rochester, I've been very happy with the "JET" brand remanufactured carbs.
Keep in mind the D.A. once that engine is in the car and driving on an average spring day will be a bit richer, likely right in your target range of A/F.
Save the hangers for the secondary jets as they are identified by a letter , an A hanger would be the richest ,(holds the jets higher out of the carb) a Z hanger would be the leanest. There were many different letters used over the years.
@@basilcarroll9729 I knew there were different hangers but had no reference, information like what you stated is all but lost.
I assume this is a tuning device in terms of mixture during transition of the air door, but once wide open the total jet area remains the same between hangers, is that correct?
Thanks!
@@yarrdayarrdayarrda As I understand it, the hangers hold the jets from idle to full throttle higher .They are lettered B-V with .005 difference in height between letters. Yes for factory tunning purposes. A Quadrajet with .073 primary jets is not necessarily richer than a carb with .071 primary jets. It was the over all tuning to get the carb where they wanted. Also the tips of the secondary rods are tapered so if they are pulled up higher there is more jet area.
@@basilcarroll9729 Thanks for the information. I can't think of a single carb design that is more difficult to tune the primary side in terms of roll pins, screws, the choke rod, etc. Plus the hope the lid gasket doesn't rip.
@@yarrdayarrdayarrda Yes and careful not to bend the primary metering rods when reinserting them lol
I've been running a lunati solid lifter cam in my 455 for over 20 years. I love it. Most people think I'm nuts running a solid in a pontiac. But with the lifter restrictors, I've never had a problem with starvation from too much oil on the top end
I really enjoy this mechanic's session. I know of the metering rods. A 400 Chrysler with the Thermoquad,...has more metering rods,....6 metering rods!
Thanks 😊!
Giasou Nikola,
Can't keep a good Poncho down, the old story
" There are no substitute for Cube ".
You got to be happy with the numbers & getting your dyno back.
Your number 1 Fan in Australia
Louis Kats from Melbourne Australia ☺ 👍 ❤
its a sweet deal to see you tame da poncho nick. dad was pro pontiac. ya gotta take a little liking to those 455ci pontys. after all shes one of chryslers best competitors. thanks you guys,,
My first car was a 76 Grand Prix and that's when I started getting interested in Pontiac motors and GTOs. Dont own no Pontiac now but maybe in the future. My dream cars, a 73 GTO, a 76 Bonneville and 2 77 Can Ams.
Nick might have a different opinion of Pontiac power if he had an engine with the best heads Pontiac made. Huge difference with the round port ram air heads.
I always learn something when I watch your channel. My last experience with a carb swap was on Camaro 350 from stock Rochester q uad jet to a Holly 650 .. direct bolt on mod. Without much fiddling around on the Holly's fuel mix it really seemed to provide so much more power.
Hello Nick and Crew! A little late to the show today but I always make the time to get more MoPar (and Pontiac) knowledge from the KIng of MoPar Muscle!
Nick, your right putting on headers can be tricky. Sometimes I think 🤔 I'd rather pull the motor & put them on , then drop the motor back. Good point 👉, Nick!
Love that 455! Thank you Nick and crew!
Thanks for watching. Tell a friend?
That's right Nick.. the man will have his pound of flesh no matter what.. Nice show.. love watching this dyno room..
Hi Nick, I used to have a 77 Trans Am with a 1970 455 .030 over XF block, 96 Heads. The headers that worked well I had purchased from Ken Crocie of HO Racing (no longer available)... Tri-Y headers that fit well, hugged the engine without interfering with the steering or starter. I think the Tri-Y's from Hedman Hedders might also work out for your client.
I have a set of those
Love your in sit and content,im always tuned in ..love you nick and respect your Wisdom .
IMO, dyno days are the best. Thanks for taking us along for the ride Nick.
Great to see a Quadrajet on the Pontiac they are a great carb ! They got a bad rap over years I just think people didn’t understand them is all
Nick just soooo enjoy watching and learning from y’all , goooooo mopar !!!! Working on a 360 LA block old school for my 92 one ton
Really cool. I have the same 455 setup
Thanks for the follow-up testing Nick! I appreciate you giving us a baseline so to speak by using the factory style divided-runner cast iron exhaust manifolds and Q-Jet on this undersquare engine.
Hmm...as I recall (sort of), there's a few more games the owner could play, with the secondaries. I think the Buick and Cad 850's came with a secondary hanger that had enough meat to drill the holes higher to get to the "thin" part of the rod faster. There were also higher ratio secondary hanger cams (the plastic piece that lifts the hanger), but I think those were aftermarket units. I don't recall finding any different ones in junkyards.
Gota love just a "mild engine for the street" with over 500 lb ft of torque! Will be a blast to drive in an F-body
yeah with an F body and that torque it shall accelerate with less gearing and may even get a boost in mpg if its a lightweight+ 450 hp starts giving anything with tires a real bad problem anyway (so does low down torque hahahaha) who needs more HP on the street? torque baby , torque , all the way yeaH !
Hey Nick ,George, and Krew , Good Morning to all . Love seeing the ol Tin Indian making noise and I fully agree with you Nick about the headers and putting it over 400 hp . Sure Good to start my day at your garage. Enjoy the dyno days too . I remember the earlier Pontiacs engines were painted a green color which had a sparkle to it and them using Wolf Head Oil back in those days . Nick ,do you remember what the green color was called for the earlier Pontiac engines ?
Early Pontiac engine color in the sixties was a Silver-Blue Metallic Color. Duplicolor has it. Engine Enamel.
@@nickpanaritis4122 Hey Nick , Thank-you for the reply . For some reason I was thinking it was a greener tint to it . But I knew you would have the correct answer . I like the earlier color on the Tin Indians, but I believe in doing the way it came from the factory and to specs . Thats one thing I love about how you do things ,there is no guessing, by the factory specs and attention to detail all the time . Do it right the 1st time . It was fun to see the 455 get its final test done and pretty good numbers too ...I'm now wanting to see what the early 50s Hemi you have in the shop will do when you get it done . I don't know who you have doing the block working and cleaning, but they sure have the old hemi block looking great . I truly enjoy all the dynos you do and the knowledge ,detail ,and the years of experience you show when doing them . Like I said before, you are a Master Master Mechanic hands down . Sorry for getting long winded Nick . Always a pleasure to talk with you and I very much appreciate your time Nick to respond to me . I know you are a Super Busy Man . God Bless you and your Family, and be safe . Best Regards.
@@OlSgtLove ..Always a pleasure and thanks for watching.
How the hell old are you? And it's CREW, SPELLED CREW! Damn foreigners
Great show Nick and Krew. Always learn some thing. Thanks for breaking it down barney style for us with hard heads!!!
Those are probably one of the best "exhaust manifolds" I've seen. As close to a header in cast iron as you're gonna get.
Pontiac was pretty neat about that, and being thick cast iron, they can be ported like a cylinder head as well for better flow.
Long branches flow better
Great to see this engine running like a HERO. Cheers guys 👍 💯
A great video for the Pontiac fans, thanks Nick !!
Glad you liked it!
Great video, Nick. I like to see dyno results in street trim, the manifolds that are installed on the car. With an exhaust system connected, we see diminishing differences between headers, and a free breathing stock "HO" exhaust manifold. These Pontiac engines with large valve heads (389 400, 421, and 455) produce very flat torque curves, and are extremely responsive on the street. By the time (some) other high performance engines develop horsepower, the Pontiac has already developed gobs of torque and horsepower, very quickly. it's not always all about max horsepower that an engine builds, it's how quickly it can build horsepower. Throttle response makes a car more drivable, a more exciting driving experience.
I would straighten the hanger out besides tapering the metering rods. Love those Rochester Carbs
I Love Mopars more than any thing but i Love Nicks Dyno room with any engine even more . What a great Monday
This is why I like custom ground cams from people that understand what it takes to get the best out of each brand. At the end of the day, all engines are the same.....pistons go up and down, crank goes round and round ( quoted from the great Bob Glidden )
Well said!
@Car Guy daddyo .. Yes, indeed.
Well, sort of.
I like it....metering rods are new to me, but then, I'm working with old holy 94's from the 50's.
Yes I've rebuilt it and fixed all the known issues. Just a lemon carb....
No the weather is not good for making HP but it is what it is.....Thanks Nick and l really like Georges lighting set up🔴🔵🟣🟢⚪👀....Thanks George 👍
We love the Pontiacs. Thank you. Maybe a tripower vs quadrajet, or stock 389 with and without Royal bobcat kit. GOOD SHOW !!
Thanks Nick for another great video and for featuring a Pontiac. Love the variety you display and keep up the good work!!!
Your GP wouldn't happen to be a 69-70 would it?
@@joequillun7790 Joe - yes, my car is a 69GP
@@mrho4speed Beautiful. Have I seen it in the videos, or mags? The one missing the console ash tray? Super cool car.
@@joequillun7790 The car has never been seen in a video or car magazine. The color is Warwick Blue and no vinyl top.
@@mrho4speed Well, congrats on a very special car. I hope you drive it.
Awesome motor and I think it's cool to watch the carburetor work!
We agree!
That was awesome Nick, thank you 👍😁
Thank you, Nick and team
Thanks for watching, Futon.
My 69 Oldsmobile Toronado had 455.I fueled with sunoco 260 which was "white" gas.Wish I still had.
It's the 455 Pontiac's final Dyno day It's certainly come a long way Previous horsepower attempts have not gone to plan So now installed is a competition cam Nick has uprated the set up with an 800 cfm carburettor because Nick is a horsepower proffessor There's no time for resting there's always more dyno testing on the Superflow dyno well worth investing in Which cam and carb will be the best only way to find out is a dyno test This pontiac looks superclean but it runs a little lean So Nick is fettling the fuel stream Todays weather was not great and horses it can take but this pontiac was solid make no mistake Nick's Garage every Monday set the time and date
You are WAY over selling and average engine rebuilder.
Back in the 1970's and 80's HO Racing was big into Pontiacs. Once they were flogging their 455SD trans am at the track, accidentally left out the secondary metering rods and posted their best time ever. The big Pontiac's need more fuel to make max horsepower. A different carburetor on this engine might have gotten it over 400 HP? For reference, in 1969 the highest rated Pontiac engine was the 428 HO @ 390 HP, with a Qjet. A 455 with a larger bore and same stroke should be out performing the 428 with ease.
@@robertstout6980 the 428 was called the "Perfect Pontiac". However today aftermarket blocks have changed everything, but are expensive. Much appreciate the history lesson on H.O. Racing. I was given the grand tour in 1987. I was 19. They were building a 455 SD. They also had a turbo on another motor. '74 TA Red in the next bay, waiting for the 455 SD. I was a kid at the candy store!
Do you fetch Nick's coffee?😄
@@MH-WM from London? No that would be sillier than your question
Love the happy music following the fitting of the new metering rods and the Kowalski car chase graphics! Great work, George! :@D
Glad you like them!
Loved the video. Reminds of my youth when I had a '71 GTO with a 400 manual trans, a Chevy 12 bolt with 4.10 gears. I built that motor a bit more radical than this one and wish I could have put it on a dyno to see what the actual power output was. I had a Crane Fireball Cam (28428) in it. Lots of power for a heavy car. I still have the cam specification sheet I wish I still had the car.
That 455 is very impressive considering its running iron exhaust manifolds, stock heads and especially the stock intake!
The stock Pontiac intake was one of the best factory pieces ever...from ANY marque
Pontiac was IMO the only GM marque that really threatened Mopar on a regular basis...TORQUE
Hi Nick ! Love you videos ! Seen those carburetor mixing air and fuel i almost cry !! Jaajaajaaa ! Keep on brother ! Greetings from Puerto Rico !
I love these comparison videos. They show how these engines respond to changes. The dyno does not lie. Great work as always George. Can’t wait to see what’s next on the dyno. Have a great week Nick and crew.
RA exhaust manifolds are the right choice for many!
Another great lesson! Thanks Nick!👍
Kinda cool setup for the secondary barrels. Never seen that before. Thanx for the video 🇩🇰
I tried to order a Lunati cam during the pandemic. Ended up going with something else because they were unfortunately very backlogged on orders. Can't wait to see the difference...watching now.
Lot faster changing metering rods on a Rochester than jets on a Holley . Less messy too.
400 Ponies and 500 ft lbs of torque...sounds like alot of fun and massive tire smoke ahead....
Damn Nick! Those ole 455 Pontiac motors ARE frickin Torque Monsters! I put a 71 455 out of a Grand Prix in my 65 Chevy short box OEM divorced transfer case 4X4 pickup back in the mid 80's! That truck was A Stump puller .....just sayin.
The price of fuel in Ontario todays is $ 8.30 per gallon or $1.83 per liter
Yep.. We are making the most of every trip.
Great video Nick, Love to see some Pontiacs on the Dyno. Just a quick comment on the engine color though GM corporate isn't the correct color for 1976. In that year its supposed to be more of a metallic blue.
It will be installed in a 76 Trans Am, same as the color in the dyno room. Metallic blue was in the sixties. I hope I am correct.
@@nickpanaritis4122 Actually I also have a 1976 455 4speed T/A and the engine in my signature pic is the correct color for 1976. Pontiac changed the blues they used several times over the years. and in 1977 they switched to the final color which is GM corporate Blue. The 1975-1976 color is pretty much impossible to find in a spray can these days though, especially in Canada. I got a can at the Pontiac Nationals in Ohio a few years back and brought it home with me. Also you could just get it mixed up at a body shop it is PPG/ Ditzler Blue Poly 14817.
@@maxpowerta3183 Thank you for the info.
Heard a long time ago that Mickey Thompson had made some hemi heads for Pontiac. I believe there’s an ad for them in old Hot Rod magazines. They mustn’t have taken off at all. Never hear about them really. Anyway this is a nice 455, great job Nick. On to the next one! Pontiac and Buick 455’s check. Now for an Olds!
@VinceGalicic, Kauffman Racing duplicated the Pontiac Hemi Head last year. One off. Client had deep pockets.
15 horsepower at the flywheel for all that time and work doesn't seem worth it to me. You would probably never notice the difference when it's in the car
It is what it is. But he can change it