FWIW, I built a 360 with magnum heads, zero deck flat top pistons and a 224/230 @0.050 cam which is 10.6:1 compression and has 180-190 psi cranking pressure.

I run this engine on 89 octane and in a pinch can run 87 if I am careful. The key is the tight quench of the flat top pistons and closed chamber heads.

If you crank the numbers through Camquest it should be 410 HP. I figure its around 370 HP based on 102 mph trap speeds in the 1/4.