Head cc/ compression ratio q's


New Member
Aug 6, 2003
I am rebuilding my motor, I have a set of gt40p's milled .030. With stock pistons i would have a compression ratio of 10:1 ish. I will be using the summit rebuild kit. It says hypers have a 9.08:1 wiht a 58.2cc head and forged have a 10.13:1 with a 58.2 cc head. My question is, what piston to use to get a compression ratio of 10:1 to 10.5:1 and not have clearece issues. For waht would my compression ratio be with each one? Thanks guys.
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