340 compression ratio

I cc'd my TRW 2332P with a cheap syringe from work. 2 valve reliefs were just shy of 8cc I believe. I'm sure you could do them in the block but you still need to figure compression height on piston anyway.
Glad ya caught it before it got worse.
Yeah I figured I was gonna have to pull a piston and try to measure it or ID it after I cc it in the bore to get the correct figures. I was just hoping someone had a way to figure it just using the piston cc along with the combustion cc, head gasket thickness and bore and stroke.