max compression on pump gas\steel cylinder head\241 @ 50 cam

my 10.2 comp 410 has 170 psi on open chambers no issue=dish w/quench dome style pistons and 59cc heads with next to no shallow side left.-int closes 54* 110cl

my 9.7ish 340 w/kb243 flat tops and 241*@.050 has 155-160 psi. int closes 52* 112cl
thats what I'm running.

I'd like 15psi more, or 10.1 on the 340, though I'm happy with the 410's comp ratio.