i'm running a 1979 350 4bolt main except it has dished pistons...it has been completely rebuilt has a crane cam airgap intake,600cc edelbrock, ceramic headers and more my heads are really holding me back... i was in a bind at the time and put on a set of fresh 305 heads i had laying around....i've been told there really holding me back and choking my motorand i need more compression to make my cam work correctly...i wanna run around 10:1 if i can...canadian gas i can go up to sunoco 94 i have a line on sportsman sr 52cc heads what would i be looking for to get what i need....

heres my cam specs..
http://www.cranecams.com/index.php?s...51&lvl=2&prt=5