hot rods, muscle cars, customs...
- Thread starter Cano
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- Grandville Mi
- Gotbeefboy564
- Got beef boy564
GTO with a 630 HP 2jz swap.
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- Grandville Mi
- Gotbeefboy564
- Got beef boy564
- 29,726
- a baby, candy, it's like taking.
- TexRex72
On kind of a Yenko kick at the moment and I came across what boils down to a '32 Ford roadster with a Chevy small block, which is pretty boring, but it's no ordinary Chevy small block.
Yenko Chevrolet commissioned Weslake in England for four-valve heads (unmodified engine block still utilizing pushrods) for what would likely be some very hot Camaros. Maybe a dozen pairs of heads were manufactured out of many more planned and only three engines were assembled, with none ending up in cars offered by Yenko.
I don't know if the engine above is one of the original three or if it was assembled more recently using another pair of heads.
Yenko Chevrolet commissioned Weslake in England for four-valve heads (unmodified engine block still utilizing pushrods) for what would likely be some very hot Camaros. Maybe a dozen pairs of heads were manufactured out of many more planned and only three engines were assembled, with none ending up in cars offered by Yenko.
I don't know if the engine above is one of the original three or if it was assembled more recently using another pair of heads.
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- NoStopN
Some people (me, in this case) have seen 2JZ engines in so many non-Supra cars that this becomes nothing special. And if @Gotbeefboy564's statement about the engine not fitting in another project is true, this engine will be out in no time & into something else.
Now this engine would garner more attention than the 2JZ GTO. I have to admit to having a bit of a jealous bone with regard to technology, engineering & design. For every popular model of car or awesome new engine, I look to the other Detroit (or import brands to out-do each other). Case in point, new A90 Supra gets competition from the new Nissan Z. The Hemi got other Detroit brands thinking hard. Even some aftermarket companies got into the mix. https://www.motortrend.com/how-to/hemi-engines-ford-chevy-oldsmobile-ardun-big-small-block/ I've read many stories about the Olds hemi engine & no matter how good or bad it would have been, I would have loved to see it produced.
- 29,726
- a baby, candy, it's like taking.
- TexRex72
The saying goes that necessity breeds innovation, but something else that breeds innovation is competition. The hemispherical combustion chamber wasn't a new idea unknown to manufacturers when Chrysler started having success with it in racing and in the marketplace, but that success motivated those manufactures to jump in and grab some of that success. It's just a shame that mainstream racing then began to crack down on this particular innovation and companies other than Chrysler didn't have the same sort of opportunity.
It needs to be said that Oldsmobile never made a serious run at an actual hemi engine. Buick took a shot, but that fizzled away pretty quickly. The Oldsmobile project is termed "semi-hemi," but that's not really a thing (even if I've used the term because it's something people can identify with). The Oldsmobile engine couldn't be a hemi because of the number of valves it uses and their orientation. It uses a pent roof combustion chamber--and hemi engines are pent roof (on every axis)--but it traded the desirable aspects of a true hemi, like better quench, combustion and scavenging, for the increased airflow provided by the greater valve area...while still having a pent roof on a single axis.
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- NoStopN
I agree about the sanctioning bodies being too quick to clamp down on new innovations. They call that "rule bending/breaking".
I met a fellow online who seemed to be a big Oldsmobile fan/historian & dug as deep as he could to get information to write an article. https://www.streetmusclemag.com/news/the-w43-oldsmobiles-dohc-455-v8-that-never-was/
- 29,726
- a baby, candy, it's like taking.
- TexRex72
I shudder to think how much performance technology has been explored by manufacturers but never saw even limited production. There's too much working against that kind of innovation so sea changes are rare.I agree about the sanctioning bodies being too quick to clamp down on new innovations. They call that "rule bending/breaking".
I mentioned pent roof combustion chambers in the previous post but I neglected to point to one of my favorite engines of all time.
Buick's "Nailhead" (so named because of the valves that point straight down as if they were nails being driven into a deck) had the pent roof and central spark plug, but its valves were arranged in a single row per bank.
Though much simpler than pent roof engines with intake and exhaust valves that oppose one another at an angle, they suffer from breathing issues at higher RPMs because of those awkward exhaust ports and they require an aggressive cam if you want to wind them out. Lots of torque, though; as much as 465 lb-ft from the 425ci variant.
Bonus, the Nailhead was actually produced for a number of years and they were so plentiful that two were utilized in starting the SR-71 Blackbird.
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Oh yeah. I've read stories about the start carts. After the '60s era OHV engines came out, Nailheads are fading out of the spotlight, not to mention actual cars at shows. On another note about car engines being used for non-car purposes, I still love reading stories about the Hemi air raid sirens. https://jalopnik.com/the-loudest-air-siren-every-built-used-chrysler-v8-engi-1845275047I shudder to think how much performance technology has been explored by manufacturers but never saw even limited production. There's too much working against that kind of innovation so sea changes are rare.
I mentioned pent roof combustion chambers in the previous post but I neglected to point to one of my favorite engines of all time.
Buick's "Nailhead" (so named because of the valves that point straight down as if they were nails being driven into a deck) had the pent roof and central spark plug, but its valves were arranged in a single row per bank.
Though much simpler than pent roof engines with intake and exhaust valves that oppose one another at an angle, they suffer from breathing issues at higher RPMs because of those awkward exhaust ports and they require an aggressive cam if you want to wind them out. Lots of torque, though; as much as 465 lb-ft from the 425ci variant.
Bonus, the Nailhead was actually produced for a number of years and they were so plentiful that two were utilized in starting the SR-71 Blackbird.
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- Grandville Mi
- Gotbeefboy564
- Got beef boy564
Berger Camaros including a ZL1 Prototype
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- Grandville Mi
- Gotbeefboy564
- Got beef boy564
Yenko
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- NoStopN
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Cuda with a 574 Hemi in it.
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- Grandville Mi
- Gotbeefboy564
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ASC Mclaren Capris.
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- NoStopN
Were all of those Capris from ASC or just the white/red ones? Either way, that may be the most Capris I've seen in any one place ever. Now I have to go Google the car.
Edit: That was quick. And no wonder I've not heard of this car. I was halfway to driving age when it came out. I couldn't tell a Capri from a Camaro at that age.
Edit: That was quick. And no wonder I've not heard of this car. I was halfway to driving age when it came out. I couldn't tell a Capri from a Camaro at that age.
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- 15,165
- Grandville Mi
- Gotbeefboy564
- Got beef boy564
Were all of those Capris from ASC or just the white/red ones? Either way, that may be the most Capris I've seen in any one place ever. Now I have to go Google the car.
Edit: That was quick. And no wonder I've not heard of this car. I was halfway to driving age when it came out. I couldn't tell a Capri from a Camaro at that age.
I believe all except for the Capri RS were ASC Mclarens.
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- Grandville Mi
- Gotbeefboy564
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- 15,165
- Grandville Mi
- Gotbeefboy564
- Got beef boy564
- 29,726
- a baby, candy, it's like taking.
- TexRex72
That'd be a '69 Yenko SC 427. Hot things. Scary things. Just 37 were made.
- 29,726
- a baby, candy, it's like taking.
- TexRex72
Another '69 Chevelle like the Yenko I posted at the top of the page, and a fairly special one if not quite as special. This one's got the top-performing 375-horse 396, but the original purchaser ticked the box for the RPO L89 COPO option that swapped out the iron heads of the otherwise identical L78 for aluminum units, taking about 70 pounds off the top of the motor.
A stunner in black with red interior and a red stripe package, I think the only thing I'd want different is a black vinyl top...just because that's my preference for these cars.
A stunner in black with red interior and a red stripe package, I think the only thing I'd want different is a black vinyl top...just because that's my preference for these cars.
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