Originally posted by bret:
i would use 8.5:1 but make sure they don't just mill the top of the piston to lower the compression, that is bad for a s/c car... you want as much material up there as you can get to help with the high heat... i might be able to get you a set of 8.5:1 if you are interested...
Bret: normally you would be right, but if there is an abundance of material it is ok to machine the face of the piston to lower CR. It gets done in racecars all the time, and I have had a few of them.
