need to raise compression w/o new pistons

lenweiler said
The typical measurement of a 360 head is around 65cc, but that would have to be verified. As would the measurement of the piston at TDC. The problem with all this milling, is that camshaft limitations will be apparent. With more compression, means more cam, ie lift and duration, which will bring the valve dangerously close to a piston with no valve releafs.

A 340/360 open chamber heads have a a volume in the range of 68-72cc's and most are closer to the 72cc number. The only heads with a volume down in the 65cc range are the small port 318 heads and the closed chamber 302, 308 and magnum heads. The magnum heads on my 360 measured 64cc's.