From Chicago Autoshow>
Has offset exhaust rocker.

 

Do you know if these use the standard length '04+ LSx head bolts/studs?

 

chamber looks like the old fast burn heads

 

What cc is the combustion chamber.

 

71cc I believe

 

Yes. Even length bolts.

 

does anybody know the size of the intake ports?

 

A FAST intake manifold wont work on these?

 

It should be able to.

 

checked prices on gmpartsdirect.....160 a piece bare....wow....THATS INSANELY CHEAP!!!!!

 

No it will not. With a lot of modification it could though.

Nate

 

Has anyone seen anything about the flow rates on these heads as-cast and/or ported at various lifts? If so, where can I find this information?

Thanks,

Steve

 

Read post 19.

Nate

 

Nope, the runners are too wide and you would end up outside the o-ring. GM or sheetmetal.

Brandon

 

Yuck, that is a scary proposition with even a stock shortblock, much less a nice forged setup. Too many epoxies fail.

Brandon

 

So will the GM truck intake definately bolt to these? because so would my Magnacharger?

Article says they will work on LS2 so I guess we can assume any 6.0L derivitive block.

 

Any 4.0" bore block will work

 

Guys I have several sets without seats & guides for $250 a pair!

 

That is fabulous if we can be assured of an intake that fits under a Ybody hood. Seriously fabulous.

 

Actually, the L92 and LS7 heads should both work on any LS series block with a minimum bore of 4.00" However, the interface between the intake manifold and the intake runners is different. The LS2/LQ4/LQ9/MagnaCharger RADIX/All Current Aftermarket Manifolds are set up for a cathedral roofed style interface. The L92 and LS7 inlet ports are rectangular and are different from each other (mainly in height as far as I can tell). Unless you can get and use either an L92 or an LS7 factory intake manifold, the L92/LS7 heads won't work. I'd about guarantee though that MagnaCharger and everyone in the aftermarket intake manifold business for Gen III/IV is developing manifolds now. I'm sure too, that the factory LS7 and L92 intakes probably flow well in their current state. However, if you want to use an LS7 manifold on an L92 head, there's going to be a pretty big mismatch. If the L92 intake runner were ported to be properly matched to an LS7, that would probably work fine.

Steve

Steve