Quote Originally Posted by GM_TUNER
Lets add into the equation, the fact that ill be boosting on a milled head, taken down .020" with forged internals. That gives me a 10.6:1 Static CR. Then, with 12psi, it gave me 18:1 Effective CR.
dont mill your head, kind of pointless.

But if you do, it only changes your compression maybe .3 at the most. So you may go from 9.5 to 9.7is

not that big of a deal