Compression test??

I wished I new exactly what compression ratio I'm running. I have a good mind to yank the heads and calculate everything to see what I'm running. Like I said I don't know what the true bore size. I talked to the engine builder and he seemed to busy to answer my questions but he "things" it was bored .60 over. And then he said the heads was good to .510 lift. ???

If I find out that I'm running lets say 9:1 compression do you think if I got it up to 10:1 or lower and do gasket matching, porting that the cam would do better? I have a 318/360 Performer intake and really don't think the intake matches the heads.