I'm confused about the question. Would anyone put an LS into a old CART or F1 car? Or would anyone put a Judd in a Corvette or Cadillac race car?
The only class where there would be any possible crossover would be prototypes, but even then, the classes are generally set around the engine anyway.
Not to be rude, but would anyone replace a Ferrari motor in an F333 with an LS?
They are fit for purpose.
Judd powered c8 corvette
https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.tiktok.com/%40mkv.blupra/video/7279453305695161643&ved=2ahUKEwiOnYSRtYWEAxVnlGoFHbfNBSoQwqsBegQIDRAF&usg=AOvVaw25MmzzT4TzzeYpPesAKBmp
Ls powered formula car
https://www.lsxmag.com/news/get-classic-f1-car-looks-with-modern-chevy-power/
There is also a cool judd v10 powered supra in drifting.
I realize these are one offs. I think oddball engines in the "wrong" chassis are neat!
In reply to wvumtnbkr :
The latter isn't really the formula cars that the Judds are for, nor is it a real Indy or F1 car- which is what the Judds are intended for in terms of their main use.
In reply to alfadriver :
I know. I just thought it was neat.
Your post made me search it out because it's just oddball enough to be cool!
alfadriver said:I'm confused about the question. Would anyone put an LS into a old CART or F1 car?
Wasn't the old Formula 5000 that way?
j_tso said:alfadriver said:I'm confused about the question. Would anyone put an LS into a old CART or F1 car?
Wasn't the old Formula 5000 that way?
Sort of, but mostly not. They were designed around the 5.0 they ran mostly. And you can't drop an LS into a historic F5000 and expect to race with it.
Still, the judds are for cars that are some 20 years younger than F5000
In reply to wvumtnbkr :
True, it is neat. But the op theorizes that you can drop an ls onto a formula car where a Judd is appropriate and accepted and be happy.
In reply to Erikbecker :
When LS1s were new and people started swapping them into FD RX-7s, people who did track days found that they were less than reliable. A few people swapped back to turbo 13Bs, others just gave up doing track days.
Once you have good cooling and a stable fuel system, a turbo 13B is essentially immortal for track use. Not so much a piston engine.
I have heard of people putting Chevy motors into old Indycars -- this was back in the 90s so it was SBCs rather than LSes, and they were talking about Indycars from the 70s and 80s, which were tube frame. The chassis were relatively cheap (used, no-longer-competitive, not-yet-historical race cars), but didn't come with engines so it made some sense. Not sure what they did for transmissions.
You can always slap in a Mercury Marine 32 valve 8000 RPM 750 HP LS7 engine.
LSX Mag.com: Mercury Racing Releases Next Generation SB4 7.0L V8 Crate Engine
codrus (Forum Supporter) said:I have heard of people putting Chevy motors into old Indycars -- this was back in the 90s so it was SBCs rather than LSes, and they were talking about Indycars from the 70s and 80s, which were tube frame. The chassis were relatively cheap (used, no-longer-competitive, not-yet-historical race cars), but didn't come with engines so it made some sense. Not sure what they did for transmissions.
Oh jeez... can't remember the name... one of the big names from the early 70s was destroking small block Chevys to get under the 203ci limit and running lots of turbo pressure to make in the 700hp range.
One of the weirder things was blocking off the intake ports and running new intake ports on the outside of the engine. The outside of the heads had four intake ports, four exhaust ports, and the spark plugs. I assume it was for bodywork reasons.
Edit:
The Buick V6s from the 80s were "stock architecture" but way different from what production cars had. The decks had an extra six head bolt locations, the blocks no longer had deep skirts, etc.
In reply to Pete. (l33t FS) :
I think Smokey Yunick made a few destroked, turbo SBC's for a few of his Indy car attempts in the 70's. I'm pretty sure he had a flat plane crank made up for them too. I'll have to dig out my copy of "Best Damn Garage In Town" and see if my memory is correct.
In reply to TheRyGuy :
I've heard of that. His biggest issue, by recollection, was that he was not really up on technology so he was trying to make it work with TPS-RPM based mechanical fuel injection. This was a problem sorted out in WWII airplanes (many were mechanically supercharged, some were "turbosupercharged") but he wanted to do it his way.
Old school JUDD hill climb video. The sound is glorious.
In reply to z31maniac :
I like this one best I think
The two engines are obviously very different but at the same time fill similar roles.
There are many cars that came equipped from the factory with another motor and now run an LS based engine for cost/performance reasons.
There are many racecars that came equipped from the factory with another motor and now run a JUDD engine for cost/performance reasons.
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