The Small Block Chevy Race engine NO ONE has EVER built! You Can Build One Too... On The Cheap!
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- Опубліковано 7 лют 2025
- I normally do Buicks, so this has got to be special! Follow along as I propose the idea of new Small Block Chevrolet content, cost comparison of original parts versus late model parts, a Desktop Dyno Build for awareness and comparison of the video by @richardholdener1727 from 2021 of actual DZ302 Dyno Numbers.
OMG, I built one of these 40 years ago. Some people told me that i was crazy for some of these ideas but it definitely shut down quite a few fords. Luckily i found a good deal on a holly 780. It screamed. I had to use a marine tach ( 10 k ) . That Malibu was FUN to play with
small main journal 327 block,283 steel crank, green rods-easy 302.
Great to see this video and looking forward to the follow up. i've just built the early version: 283 bored out 0.125 to create the 301. (bought the engine in 1969 and the scammer told me it was a 301 then!...i was young and naive, it was stock 283....finally decided to make the 301 happen.) Currently running 11 1/4 pistons, standard 350 heads (to manage compression) and Q-jet on Edelbrock. Next step: modifying LT heads to fit the block with later TPI setup.
yep with today's gas anything near 11 1/2 is borderline using hei dist. i guess maybe one of those fancy computer things would run but i'm to old for that new stuff , sounds like your old as me 😂
Them ol Q jet carbs are awesome!!
I've had several, and they were all really good.
My dad built this same combo ,from a 80 Malibu ,he used a 350 block ,267 crankshaft was from Malibu ,he passed away ,I have the car now
Still runs great.
267 shares the same stroke as the 305 and 350.
In 1968 Chevrolet went to the large journal crankshaft that includes the 1969 MO 302 and the 1969 DZ 302.
I like it, i cant wait to see it in action
I built one of those engines in 2009 using the stock L99 crank and rods with a .060 over tbi hyd roller block and speedpro 2256F pistons. I put an Elgin 280/480 hyd roller cam with some freshened up L98 aluminum heads, a Edelbrock performer rpm intake and 700 Holley double pumper. It was in a 87 cutlass with 3.23 gear and a 2004r with 2500 stall and shift kit, it was really strong and fun.
Nice, I finished one last year. Flat tops, 305 vortec heads and ramjet 350 cam. Going in a S10. Wanted to keep the 700r4 and stock 7.5 rearend. Hopefully it gets good fuel mileage too
I still have 2 of those L99 crankshafts and 2 sets of rods that work with the stock sbc 350 pistons, I collected them over the years to play with or pass on to someone with the same passion I have.
@@paulbass1369 I'd like to have another set. I think it would be fun to build one more "performance" oriented.
I don't know why this guy thinks he's the only one that has ever built this combination, when I built mine I read several blogs about the combination then. That's what gave me the idea because I had picked up the L99 from the machine shop that I use.
Very cool Dallas I also am a high reving gear banging wheels up N/A guy. I have all motor coyote swap notch that leave at 7600 shifts at 8100 and goes through at 8325. G/Force dog ring t5 471 gears went a PB in oct 9.89@ 134.78 with a 26/10 Mickey. So this is right up my alley.
Hot damn!
This is the perfect engine for a manual transmission Nova, Camaro etc.... excellent combo!
Or a Monza/ Vega in the Triple Crown.
@mr.roddersneighborhood2740 Be sweet if we could find an old Beretta / x body door slammed that's been setup rwd ...
We built a 307 ( .030 bore 302) in the 2007 Engine Masters. Was a great engine, made 498hp. Easy build.
Joe these guys never build any engines, let alone run them on a Dyno. They are all keyboard racers.
The Richard Holdener video of DZ 302 (any many other engines) was simply a rehash of a paper magazine article he did 30 years earlier when he still had hair...
I built one for a scca as class, a lot of rules I only made 454 hp. The spec heads were baf.
Sounds like A good concept especially if You have the availability of lots of good used parts ! Very interested in final project ! Please keep Us updated , Thank You & Best wishes ‼️
Now this sounds like a fun project
Wow this is awesome I can relate to this thank you sir !
The Reluctant Gearhead is really serious about the SBCs, he has a 302, a 327, a 357...a whole row of classic engines with camel humps, Crane 292s, Vortecs, modern aluminum heads. Has a video where he shows the progression of the intake manifolds from Edelbrock, like 10 different patterns going back to the 70s. All packed into like a one garage. Sam has has some cool stuff going on. You should check it out.
Ya he’s one of my favourite channels. He knows his stuff.
I’m glad to see you again! Nice idea!
Thanks! Life has been really hard for the past few years. Things are drawing to a close. I should be around more often now.
If you used the L99 rods you can run an off the shelf 350 piston which will save you some money on pistons. Also, this engine you are proposing HAS been built before, several years ago.
Hot Rod magazine built one back in 1998 with LT1 EFI intake and a LT4 hot cam. I think they also used the L98 aluminum heads instead of the iron L31 Vortec heads. It made about 400hp if I remember correctly.
😂😂😂😂😂!
I finished mine last year.
Great idea ! I remember when that "baby LT1" came out and actually thought about building this back in the 90's ! Cool to see it getting done. I feel 302 inches or thereabouts fully utilizes the potential of the best production head castings. Reminds me of some of the testing Richard Holdener has done on the 4.8 LS truck engine. 100HP per litre on a slightly warmed over factory cylinder head, factory intake, junkyard truck engine. Neat stuff ! By the way, late model cast cranks have more than proven their worth..... This ain't the poorly made smog era stuff!!
I thought holdener made a 302 on the LT platform using the baby LT 3" crank? Maybe he just talked about it, my memory sucks. Everytime i see the 4.3 baby LT this crosses my mind.
@@stevenbelue5496I don't think he ever got it done. I've been waiting because I finished mine
Great to see a person having a go,, REGARDLESS of the outcome you gave it a go, i did a similar thing in 1970 In Australia, but using a 307 block, 327 crank and rods 350 pistons humpy heads to acheive 7.5 comp ALL FORGED, for twin turbos, all in a HQ 2 DOOR TOTALLY unheard of in this country back then.. was pretty quick even with out the pumps..
4.3l version of the 2nd generation lt1. That 3" stroke crank in the 5.7l lt1 block. Same dementions as a dz302... 96 and up vortec heads were based loosely off lt1 2nd generation design, minus the reverse coolant flow. The reverse coolant flow in seconds gens cooled the combustion chamber before the block allowing higher compression on pump gas. I built one early 2000s with lt4 heads and intake(raised runners bigger valves for better breathing higher rpm) thing wanted to rev to the moon.
Soon as you started the talking i started typing.
Great video, I appreciate the cross reference of parts and the high power potential results. Well thought out, thanks.
Comp 787-16 retainers were designed to use a 918, pac 1218 or equivalent ls beehive valve spring on vortec heads to get the extra clearance without cutting guides or spring pockets.
50+ years ago (holy crap!) my soon-to-be BIL would throw me the keys to his '69 Z28 so he could spend a little 'alone time' with my big sister. Was certainly not a torque monster but scads of RPM, essentially open headers, a strong 4-speed and deep-deep 5:38 posi gears would make my knees quake when I jumped on it! Oh, lucky me! I believe the C.R. was in the 12:1 or even 12.5:1 neighborhood. BTW, premium gas was maybe 28 cents per gallon.
Just found your channel.... Instant sub bc of the content.... Also nice premice!
Part 2 is up buddy!
Very interesting video, Dallas!
That's gonna be a cool build to follow 👍. I'll be a watching. Merry Christmas Dallas . !
Hi Dallas, glad to see you're back with the videos. I think we do some research you'll find that in 1969 the 302 had the bigger main bearings and rod bearings the 67608 302s were the small ones. And I also believe that some of those cars came with the casting number 010 block which was a 350 block as well for years. Also, that 30-30 cam had a 255° duration at .050. What specs are that LT four cam. I have a sheet somewhere with factory cams. I can go take a look. Can't wait to see videos two and three.
I've heard the rumors of the large journal 302's, but I've never seen one. It would make sense, since the small journal engines would have went away in 68 everywhere else. The LT4 Hot Cam specs are almost as weird, many of the cams came from Crane for GM without cam cards. The profile is listed out on the GMPP website, it has an Intake Duration of 218 Intake and 228 Exhaust and .492 Lift with 1.5:1 ratio rockers and 109 LSA.
@ yes I found the listings I saved from the Internet for all the factory camshafts. And those were the specs that I saw.
Dz was a small journal in 68 then in 69 was medium journal
@@mr.roddersneighborhood2740 Yes, the 69 302 had the larger journals, and I had one. ALL the SBCs in 1969 had the larger journals too. By the way, a 1967 327 had small journals also. It was a function of the model years, not the displacements. Bill Jenkins preferred the smaller journals. Despite the less strength, he did it for less parasitic loss. Can't wait to see you back out at Northeast Dragway one day. 🙂
@ hopefully one day I’ll be back out there doing good things!
Just found your channel today! I love this stuff, can't wait to see what this engine does.. Would also be cool to see what the 302 would do with modern aftermarket aluminum heads with good valvtrain and a camshaft that is optimized for the combo.. I love old school 8k RPM screamers!
When I built mine I used 6" Carrillo rods and shaved Std 350 pistons. 8000 rpm 400hp. Shit heads with big valves. 750 Quadrajet. Fairly mild cam.
I have the same Desktop Dyno program and I love it. It tends to be a bit optimistic, but actually pretty accurate. It does really like valve size and the head flow data in there is flowed at 25" instead of 28" so watch out for that.
It’s been a while since I’ve messed with it. I ran into the things that always seem to get me, the 25” vs 28” flow data and the cam math function.
merry christmas glad your back
Oh man I haven’t played around with my desktop dyno program in 20 years. I would waste hours messing around with that.
Great video and Thx for it , life long SBC guy an when i retired put a 400 crank in a 307 block with 416 305 heads , been daily driver for over 12 years , was thinking of an old 302 build but this one looks way more fun to see what happens , so looking forward to your build and think i'm going to build one to . P.S Q-jets are your SBC friend IMHO
I always wanted to 383 stroke a 307… that’s awesome! I’d love to hear how it is in a towing application. Thought it would be a great truck engine.
@@mr.roddersneighborhood2740 lol it is in a 1981 1/2 ton and that combo comes out to 354 , have to remember 307 is a stroked 283 , that was built for the 360 cubes an under cam lift rules for dirt track , only raced it one season so changed the rings an bearings an put those 305 heads on it , still has the solid lifter roundy round cam in it an once it gets on the cam about 2200 pulls like ten men , burys the speedo with about 1/2 inch of throttle , thats on the primarys of the q-jet , mine is twenty thou over , to get 383 would have to bore it out more , an defeats my purpose of what could i get a 283 to do and building an engine from parts from all those different size motors
@@mr.roddersneighborhood2740 trying to figure out how to send a pic of it , o it has a dual snorkel breather ducted to either side of the grill by the headlights for true cold air , if you put your ear up to one can hear the rings going up an down lmao
I am pretty confident a set of 906 Vortecs with a quickie port clean up can make 425+hp. I am surprised it would say that a dual plane would peak at 7500rpms, I would have thought it would take a cam just a shade below too big and a single plane to get the power up to 7500, I could be totally wrong but, it doesn't sound quite right. As far as the cast crank, I would think that it could hold 700+hp in short bursts, the thing that would kill it is detonation or oiling issues under extended high rpms. The cast LS cranks take 1500hp with a 3.622" stroke. Cool project, glad your doing alright. Merry Christmas Dallas.
This build is sounding sweet!
I know exactly what you're doing. You want to KEEP the powdered metal connecting rods from the L99. These are special length rods that permit you using 350 pistons. (think domed '70 LT-1 replacement OR stock 305 pistons in the L99's case; same pin height and really small combustion chambers with the 4.3L) Which, in turn has a shorter compression height therefore lighter than DZ 302 domes BTW. This was utilized to keep manufacturing costs down for the "baby LT1". Oh don't worry about powdered metal rods being weak. They're awesome.
I had the same idea just never been able to find a 4.3 v8
Cash for clunkers swallowed them up.
Every time I found one the seller wanted too much. So I just bought the crank and rods off ebay. That's all I wanted anyway
when I worked at O'Reilly's I found the mid 1970 Q-Jet was only $150 and had no emissions, always dreamt of a 302 sbc
GM built a red, black striped first gen Camaro for a show car in the late 90s with 302 gen 2, LT1 using this same method. It was featured in Hot Rod around 1996
Wow you are on to something here bud I never even had that idea come to mind at all this is a cheap build too I'm speechless and it has to friggin rip and make 350.hp.at least but at 7 grand lol and live longer than a real dz
dallas this should be a great build cant wait to see the end resuilt
Since the pistons were .060 over. Check out a 6.125" con rod and a 1.4" comp height piston for a 327 chevy for a 6.0" rod. This will leave the piston about. 015" down in the bore with a 9.025" deck height.
Hey, he's back!
Ersatz in-line four barrel = 2 IDF-40 Weber carbs. This can be a lot easier to set up than an original FORD setup. I’ve seen pictures of this being done….
Gives good distribution… can set up the Venturis, etc.
Awesome video
Very cool. I just junked a L99( 4.3 lt1)
Well, HELLO again. Hoping all is well
Hello again Space Cat! Things are getting better! It’s good to see you still on the tube!
Hey Dallas, great as usual.
Very interesting!
Thank you for telling me my math and ideas are right
I have been gathering parts to do something like this for years.
Je still makes pistons the last I knew, I already have mine at .03 over.
Your Desktop Dyno program shows the 262 stroke to be 3.100", so I'm guessing that the EZ is going to be a 308 - same displacement as a Holden V8!
The 265, 283, and of course 302, all use an honest 3.000" stroke.
One thing that everyone ( I think) keeps forgetting, is that the L99 doesn't actually have a 3" stroke. It has a 3.100" stroke, which makes for a not so easy 302.
I have thought about building that same motor. Nice hydraulic or sold roller cam and a victor jr intake with a set of 180cc aluminum heads and that thing would rip.
I have a buddy that was a engine machinist and builder and he raced circle track. He took olds 6" rods, ground the crank .013" under, used a ,.030" under rod bearing, balanced a factory cast 350 crank and turned it to 8,500rpm. He said the crank was lighter than a forged crank and stiffer so it didn't flex as much. He had some fast cars. He always said "poor boys have their ways". This was in the late 80s early 90s before you could buy a stroker kit for a sbc from McDonald's. We had to use factory parts for about everything except valve train and intakes. Very few aftermarket heads, cranks and rods back then and when you found them , it was expensive. You're probably old enough to remember those times.
I like all the flavors. 327ci, 302ci, 305ci/315ci, and 60 over 350, chevy did all the heavy lifting, we get shop till we drop😅
we called them bullets i had multiple copies of the same motor . built 4 copies i had some pontiac heads for sbc i used though
Quadrajet isn't vacum secondaries it's air valve secondaries.
I used to epoxy the well plugs and adjust the secondaries screw that is upside down and i had to grind a screwdriver short enough to work and that carb was a heck of a carb on my 350/350 Posi 1975 monte carlo. First time i got on it, the back end came around going up the mississippi river bridge in new orleans and the back end hit the guard rail. Love those quadrajets
Some were vacuum, some were mechanical, and there was even an electronic version too. The early mechanical ones are the best.
@@charleshulsey3103 The chokes were electric or engine heated with vacuum assist. Secondaries are mechanical with spring loaded air valve to regulate air flow, like Carter and Edebrock carbs. When set right that's where you get the quadrajet howl when the secandaries open or the Q jet stumble when not adjusted right.
Mechanically actuated, vacuum operated
@@duncandmcgrath6290 Vacuum is below the carb. Velocity is air going through the carb. If vacuum operated, secondaries would be wide open at idle. Air drawn into carb opens air valve as the secondaries open.
Wahoo, I know I'm a Buick guy but on the flip side of that coin I also like the Oddball weird quirky kool stuff & this certainly applies. I'm also not an LS guy. I like Valley Pan and LT engines 🤪 ..
I'm all for the Vortec top end... but I think you'd be power ahead, everywhere... just keeping the 350 crank. It's going to rev, however the cam and springs determine it's going to rev. A shorter stroke, won't improve it in any way. The only reason the DZ302 existed, is to reduce the displacement of the 350, to comply with the TransAm class rules which limited the displacement. They put a wild cam in it, just to try and get some of the horsepower back up top.
Getting a GMC Yukon block, should get you a set of flattop pistons, vs the standard dished pistons (as I understand it) and an additional half a point of compression or so.
With a 230°ish @ 0.050" cam, 110° LSA... that should yield you roughly 400ft lbs, 400hp.., and should pull to roughly 6500 rpm. Top it with an Edelbrock RPM airgap manifold, and it will match the cam's upper RPM range and still have great low and mid-range torque.
At least that would be my approach. I think you'd make more power, for less money.
You're not accounting for rod-stroke ratio and maximum piston speed. Longer stroke means higher piston speed at the same RPM. You want to stay under 10,000 feet per second maximum piston speed. The short stroke makes the engine LIVE And run happily at 8-9,000 RPMs. That off the shelf 350 crank does not live long at 8k+ RPM.
@randoawesomemix9501 if you're endurance racing... it might matter. Otherwise, more displacement, more better. You're throwing away so much power under the curve, for a peak number, at an RPM you'll rarely, if ever, see.
@@Ellington_Industrial_Arts I agree
Glad you are back. Hope this is a nice low buck engine. Any more Buick V-8 content or are you on to other things?
There is tons of Buick content still. This is something I wanted to do for a while. It’s only my second SBC I’ve ever built in my life. I have an awesome 300 Buick build coming next year.
A buddy of mine put vortec heads on a 77 smogger 350. It is strong.
292 are pretty nasty also. Super high rpm.
Love the NA stuff
Sounds like an interesting challenge. I wonder how desirable the end product would be for project vehicles?
A LT4 Hot cam would be interesting
That’s exactly the cam I’m using.
283 cranks are forged steel Std. Small journal.
this is a large journal one piece rear main seal block
@@mr.roddersneighborhood2740 Early 283 bore to 4" also 4 bolt cap conversions are still available.
Would l99 rods not have put the 350 pistons close to where they need to be
I do not know. I did not even research it honestly. The L99 rods are longer making a better rod to stroke ratio, but since I could only get the DZ302 pistons to fit a 5.7” rod, that is what I used.
I think if you used l99 rods with the vortec 350 Pistons would just about work and it would be cheaper but the compression would be 9:1 or less
Yes, use pistons with a 1.56 compression height
L99 used off the shelf 305 pistons, so yeah
Think they are 5.94 “ if I remember right
Did this years ago .
Cnc performance offers a rotating assembly yet. They may be able to get you pistons
You might want to run solid roller tappets on that LT4 cam if you want to turn over 7000 rpm
Have you never heard of a baby stroker? In the late 70,s mid eighties we built a number of them.
In order for this to work with factory pistons,one must also use the 5.92 inch rods that came in the l99[4.3l]v8's
Wrong…
Wrong
What application was the Q-jet vacuum secondary?
My first time watching ur channel....have you ever built up a 4200......I want something besides an LS for my gen2 Tacoma.....ok god bless 🙏❤️🇺🇲
No but aid really like to try a 3800 series 2.
I wasn't aware of any qaudrajet carbs being vacum Secondary. as far as I know there all mechanical secondaries .think ur wrong on that comment. on the topic definitely build this motor very interested to see and hear it run .
The quadrajet is what is actually called an AVS or “air valve secondary” carburetor. It is not a mechanical secondary and relies specifically on the air doors opening until the balance of air pressure above and below the air door is equalized. A vacuum secondary carb means the secondaries are operated by vacuum, which is what happens here on the QJet. I hope that helps! I’m definitely building the engine and should have a video up within a few days. I hope you enjoy it!
i run this crank and rods in my s10 blazer rocl crawler. u get funny loos telling em u got a 350 4bolt main bloc and a 4.3 crank lol
nice project😈😈😈
3x I've posted this comment. I just can't post a link, a title of, or even a reference to it without YT bots deleting my posts.
This platform is losing the plot I reckon.
This being the 3rd time I'll try to something else; try using your typewriter and writing about beehive springs, a vortex(c), point five hundred and fifty inches plus, easily, no machining, something about checking the explanation for the part number hash.
I would like to ask you 2 questions 1st do you know that there are 2 CFM sizes of quadrajet ?, 720 for 350 cube and down and 805 for around 400 cube and up is the general rule and 2 do you realize the dz302 cross ram intake was a single plane manifold and that the runners were made that long to increase torque?
I don't have any interest in building a race motor, but I was in need of a work truck towing engine to pull my 30-foot jet boat back to Alaska from Oregon in summer of 2023 so after all the stories about the 383 strokers I built one, so my point is when looking for 383 cranks I seen new large journal cranks for the 302 .Given a choice in doing a 302 I would always take a large journal crank.
So, the 383 worked so well in the 1988 1 ton Chev PU I have now built a 385 stroker for my 1/2 ton 1991 Chev PU -- I also used 6 inch rods and bought from Ebay the Aluminum heads with 202 - 160 values and 68 CC combustion chambers with both engines using roller cams rated for power start range in 1000 RPM
Wiser money spent would be to build the 350 vortec. More power at less RPM"s. Piston speed is your enemy.
longer stroke is more piston speed
@pl7868 it takes high RPM to make power with 302cu.
Less RPM for the 350 to make same. 350 makes way more torque.
@@dannymccarty344 true but anyone can buy a 350 , the fun is in building a motor nobody else has not in how much power it makes , power is a bonus though lol
@@pl7868 fun for me would be...beating a 302 racing for less money.
@@dannymccarty344 Can't fault you for that lol my racing days are over but if i want to go fast still have my old big bore Kaw triple dragbike that will beat any 302 😁
Hard to believe someone I went to school with does the youtubes...
It would be way down on torque. Everyone is going up on stroke not down.
I have a set of standard bore original 302 domed pistons
Get ya a standard bore block and have at it!
In 2020 I did this but used the 95 lt1 alum head fuel injected engine with the L99 crank and rods, 350 .120 dome pistons yielding 11.25-1 cr, lunati cam. Put it in a 75 Cosworth Vega. Fast very fast. Don't over cam it! I cannot express that enough. This engine is very low on low rpm torque. Terrible engine for any heavy vehicle. I would not use it in anything over about 3200lbs. I also had a DZ302 in a Vega in 1975 with the '140' service cam. Been there done that
Hello from the " Tech on Wednesday night" , Dallas. Good idea, so let it rip!!!
A 4.3 liter =262 cubic inches how are you getting the Xtra 40 cubic inches
It’s an 1987 and up roller cam 350 block with a 4” bore.
I thought about doing this with a tpi 350 to see what a 302 tpi would have done
I love that idea, TPI is something I always wanted to try on a truck engine. Chevrolet 307 with a 383 stroker crank making about 360 cubes and TPI!
You wish you were that rich. nice green screen.
Qjet gonna sound evil
They sell vortec heads on ebay that can do .550
as a kid i would race lots i had came up to DZ 302 327 350 . yes they would get met out of the hole,, but half track my 340 would get them most of the time ? if they have 400.hp i had 300.hp i don,t get it
Part 2 is up now
Your wrong on the DZ engine IT WAS PRODUCED FRON mid 1968 with a large journal crank befor the dz was the MO, OR A FEW OTHER PREFIXES WITH small journal crank AND VERY LITE RODS WITH THE 11/32 ROD BOLTS THAT WERE THE WEAK LINK , NOW DAVID VISARD SAYS YOU CAN GET MORE OUT OF YOUR 202 VALVED HEADS BY PUTTING IN A 1,94 VALVE IN THE HOLE IT UNSHROUDS THE POCKET and is liter look it up and don't use the old DZ pistons their to heavy use a set of probe lite forgings
THE dz302 WAS NOT THE FIRST 302sbc, and wasn't the only factory 302. a 302sbc was also offered through Mercruiser for inboard applications as a boat motor. and many 283 were bored out long before the larger bore blocks were produced, and as soon as the larger bore blocks were available from the corvette 327, It was de-stroked and run in The Indy 500. the 1964 Harrison special Indy car was powered by a 302sbc. and is on display at the brothers automotive collection in Salem Oregon,
Dz 302 is lg journal 69 model yea Mo 302 is small journal 67 or 68 model year engine
What is a chevy
Could you run the set up that Richard Holdner ran for his 370hp 302? To "calibrate" his dyno numbers with your Desktop Dyno?
Plus how did you get your Desktop Dyno to run on your PC? I've not been able to run my version in years. I sure miss running*what if" combinations on that program.
It’s a 2004 computer… I’ve repaired it numerous times but it’s still kickin’
@mr.roddersneighborhood2740 that's cool! Thank you for the video! Merry Christmas!
Sumpin' which is A Brand New for dat Vortec Ass 🐴
Bjok Bjork Bjork
Chevy 302
Or buy an old Corvette special order.
Joe Sherman could tell you a thing or two..
Yes, but unfortunately Joe died 4 years ago.
@mr.roddersneighborhood2740 There are many articles about his tinkery. Recall that he built some kind of monster 307 with Ford 6 cylinder rods and made 400hp/400+lbft..some of his tricks could inspire you 😉
ua-cam.com/video/XMZ_VK6arBw/v-deo.html
I built one and put it into a 944. I was getting valve float at around 7000, but I am going to try some different valve springs and see if that corrects the issue.