Generation IV Internal Engine - What should the compression ratio be?

Can anyone tell me what the compression ratio should be on a 408 with -12cc reverse dome pistons and 70cc (L92) head chambers? and what the compression gauge should read with a VTC-3 cam set up at a 105 ICL, with that compression?

With a GM MLS gasket and assuming your pistons are 4.030" bore and zero deck you'll be right about 9.9:1 static.

Thanks, yes the bore is 4.030, using Cometic .051" head gaskets, block was decked too, best I can remember the piston height is 0.000".

Yea, with the .051" gasket it's a tad closer to 10.0:1, but no big deal :)

Cool thanks

Anytime man! Let us know if we can help with anything down the road!