High compression, big cam?? Help

My mate ran a race '69 Dart (3150lbs) 440 with JE dome pistons, Eddy Heads milled to 76cc, flow was 325cfm by MCH, ran a .590 solid flat tappet DC cam, Victor intake and 1050 Dom, was 12.7:1 with fel-pro .039 gskts, it made around 600hp, personally I think he was a bit under cammed and should've gone up at least 1 step, best was 10.1@131, but as said best to talk to some cam/piston people, or engine builders like MRL on this board for more specific advice.