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282 Posts
Anyone know what NASCAR uses for the chevy engine builds??
I know They use a 357/358 small block and have 12:1 CR.
I know They use a 357/358 small block and have 12:1 CR.
What does NASCAR use?
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2,474 Posts
nothing like what you'll have ..
the sbc2.2 was years ago.. todays r09+ are nothing like what you can get your hands on..
anything you'll find used.. is already outdated..
they do have sites that sell old nascar parts...
the sbc2.2 was years ago.. todays r09+ are nothing like what you can get your hands on..
anything you'll find used.. is already outdated..
they do have sites that sell old nascar parts...
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5,030 Posts
Nothing in the catalog relates to the current GM NASCAR race engine, the R07 (google it for more info on the current engine). It came after the SB2.2 that you can get heads (18 degree IIRC) and et cetera for. There are used 2.2 engines and parts on racejunk.com. The R07 has nothing in common w/the current production engines as far as parts from one working on the other.
The other manufacturers also have their own race-only NASCAR engines.
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1,572 Posts
SB2.2 heads are AMAZING. The flow numbers are incredible.
They are made for hi-rpm. And yes, they have been around a long time.
I seen a mid 90's Camaro with a 394cid SB2.2-head motor just devastate a 70 Nova with a 555cid Brodix-headed roller motor. The Nova had NO chance against the Camaro. I'm talking like a 15 car-length difference in the 1/4 mile. Neither car was running power-adders. The Camaro had a single 5" exhaust pipe out the back. It was one sick ride.
They are made for hi-rpm. And yes, they have been around a long time.
I seen a mid 90's Camaro with a 394cid SB2.2-head motor just devastate a 70 Nova with a 555cid Brodix-headed roller motor. The Nova had NO chance against the Camaro. I'm talking like a 15 car-length difference in the 1/4 mile. Neither car was running power-adders. The Camaro had a single 5" exhaust pipe out the back. It was one sick ride.
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2,474 Posts
they are about 40k to lease give or take..
as long as you bring it back after the race in one piece
even if you get a parts list.. each team that has an engine program, gets the parts raw.. and put their own magic in them.. heads on a hendrick car will not look like a RCR head in the ports or chamber.. at this level.. every little tiny thing makes a difference..
when and if you see an RCR head on those used racing part sites. they've already move past that tech.. the ro7 that I has the honor of helping see built.. every port is different, the cam lobes are different for every cyl.. all to get as equal a/f to every cyl..
the parts list is the easy part, the labor put into everything is the difference..
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5,030 Posts
Nothing on the R07 translates to the LSx engine. Nothing fits. Not the heads, crank, cam, nothing worth mentioning. GM says
The bore is not 4.5", the bore centers are at 4.5". Big difference- NASCAR has a bore diameter limit at about 4.185".
Which is newspeak for we want to tie it in to our production engine for advertising purposes even though it has no crossover.
The bore is not 4.5", the bore centers are at 4.5". Big difference- NASCAR has a bore diameter limit at about 4.185".
Nothing interchanges between these "Race" engines and production ones.
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15,643 Posts
Depends upon class, the Cup engines are as you heard a lot different take a peek at the link for early ROx <<< ::: MaxChevy ::: GM's R07 NASCAR V8 - 05/15/07 >>>
Flip a page to see the combustion chamber really, really tight.
The SB 2.0 and 2.2 have moved down in class. Keep in mind that the SB engines like the ROx are designed to breathe into 9000 RPM and more providing sustained power at that level, not just bounce the tach to 9000 then retreat to somewhere lower. So these parts are not very streetable if that's what you have in mind.
Bogie
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