Quote Originally Posted by skeet View Post
stock head cc ( 70 ) stock gasket ( .052 ) youre at a cc of 9.5

.040 head gasket youre at 9.7

heads at a 65cc 10.29 = .040 gasket

heads at a 60 cc youre at 10.9 = .040 gasket

you'll roughly have to mill the heads .030-.040 to achieve a good or decent compression ratio
That means my math was right! Awesome. 10.05 at .20 off the heads. (67cc)