going with a big cam 235 240 610 610 114. diamond piston with stock compression ratio. the heads may be at .30 so to be safe i would expect it.what i am wondering is if -2cc valve reliefs will will be enough? or should i go with custom pistons?

 

The -2cc should be plenty. The valve pockets are very deep and should fit most any cam.

Chris Gelineau
Diamond Pistons