I just read a write up that made 401 hp, it had 9:1 compression, stock vortec heads, a hollley 750, the hot cam, hei, and the air gap manifold. It was a 350. So I'll go ahead and keep my hopes up. I'll have more displacement, and a better ignition system, plus the little head work done. From the sounds of it I'll probably stick with 10:1 or so compression. All the torque is made early so it should a fun street car