working on a ls2 402 for a friend. We are wondering what we will end up with on compression with this setup. Bought the motor used and freshened up and i believe its a 4.005 Diamond -2cc flat top. We want to use the LSA heads and a standard ls9 gasket .051 compressed). I have not really done the math and id like to know where we are at, the car is a c5 z06 with a vortech on it. The ls6 bit the dust on 14lb. we want to end up around 10.25:1 or so. The LSA heads are 68.5cc.

any maTH wiz's?