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Based on your specs your Id say your overlapped alright.

Have your heads been shaved yet? If not Id go ahead and shave them .050 like most of us have done from the get go with these heads. That will bring some decent compression for you and get you your sealing surface from the info you have posted earlier.




How much smaller does shaving them .050 do to the combustion chamber size from the advertized 84CC?





About 2cc per .010 shave, so they will end up about 74CC For a increase in comppression just over a point.