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

My 360+.030 has open chambered X heads, cam is 234 at .050" with the intake valve closed at 42 degrees @ .050", static is 9.91 to 1.. Cranking compression is 165 lbs. Run it on 93 octane at 34 degrees total. Very much more timing and it's spark knocking.