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  #16 (permalink)  
Old 12-18-2012, 12:45 PM
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Originally Posted by hcompton View Post
Seen these on ebay and figured you guys would like to take a look.

Chevy R07 Aluminum Cylinder Heads Set 99 Complete NASCAR Arca Nationwide NHRA | eBay

They look nice i think they should fit a 6.0 truck engine.
Nothing interchanges between these "Race" engines and production ones.

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Old 12-18-2012, 02:23 PM
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R07 head on LS block? Ain't happening. Different bolt number/pattern, different bore centers, etc.

Probably the easiest way to see this by comparing the head gaskets. R07 top, LSx bottom:


Last edited by cobalt327; 12-18-2012 at 02:29 PM.
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Old 12-18-2012, 02:26 PM
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Originally Posted by ChevroletSS View Post
Anyone know what NASCAR uses for the chevy engine builds??
I know They use a 357/358 small block and have 12:1 CR.
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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Old 12-18-2012, 08:06 PM
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Yep so its only for the rox blocks.

283 Main ROX Series Block, Gray Iron 25534452

Still looks like a pile of money but these engines are not gm only you can buy the blocks and heads new or used. Gm does supply the racers with build up blocks about a year a head of time so they can prep for next season.

I see gm has an allout race only head for the ls engines as well. I figured these were them. But not completely different item. Rox is none catalog.
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Old 12-18-2012, 08:54 PM
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Pure eye candy
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Old 12-18-2012, 11:23 PM
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R07 heads fit R07 block. The R0x heads can be looked at as an extension of the SB2.2.
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