Engine Combo

Prine is on the right track. The 360 heads will kill your compression unless you get the right pistons.

With KB 399 pistons and 360 heads (71 cc) comp comes to 10.3:1,but you will have open chambers and domed pistons. Not the best combo for todays gas.

KB 167 pistons are flat top and will give you an easy zero zeck. They will work great with the 302 casting or the magnum. The fast burn chambers of either head will allow higher compression ratio's and good quench with pump gas.

The 302's will need porting to make good power. The magnums will make 400 h.p without porting,450 with, but are not as straight forward ( a few more $)to bolt on as the 302