Milling the Heads How much?

Next time have the intake face of the head milled. That way the intake can still be used on any motor,plus you wont need to have a new intake milled. Milling the heads is a great idea,just dont go over board. 9:1 is o.k with an open chamber and no quench. It's a big improvement over 7.5:1 or 8:1! You can also have the crank offset ground which will raise comp slightly as well as giving a few more cid. For the crank it will mean being maxed out as far as grinding go's,but I think 10:1 is achievable with offset grinding,head milling and a thin gasket.