lo po cam dilemma

sorry my bad I only read the first part about the 6400 cam. specs are a 1976 cast bottom end with piston .100 below deck. with the closed chamber stealths it should be 8.9:1 with the gaskets that came in the rering kit. but I've read the chambers are not quite as small as advertised. I measured the deck height with a sled gauge and dial indicator so it should be accurate.