I have a 2003 Chevy HD with a 6.0 and just replaced the blown stock piston with diamond forged pistons. Here are the specs, Part#11514, bore=4.000, comp height=1.336, stroke=3.622, rod length=6.098, efective volume=-13.7cc. Can any body tell me what my compretion ratio would be? And maybe how much boost I could run with the right tune, oh yea I used cometic head gaskets. Thanks for any help.

 

does anybody know how to figure this out??

 

According to my calculations your final static compression ratio should be 8.96:1. I allowed for a positive deck of .010" and a compressed gasket of .054". If these dimensions are different than the final c/r will change accordingly. At the current c/r level, one cc will change the final compression .08 of a point.

Hope this helps.

Richard

 

thank you very much. How boost do think it will handle?

 

Theoretically, take 14.7, divide by boost, plus 1, multiply by your compression. This will get you close to your boosted compression ratio.