I have had a few small block combinations starting with a 340 627 lift roller cam 12.5 to 1 compression and w2 heads it made 527 hp went 10.70snext was a 360 magnum short block same W2 heads 590 lift mechanical cam , stock bottom end ( cast crank) made in the 530 hp range went 10.70s next was same block, same W2 heads,forged crank better rods and SRP pistons s, 11.5 to 1 comp. made 549 hp 450 tq and went a best of 10.40 and my present combo a R3 block 20 over, Indy 360-1 heads/ intake 600 lift mech. cam 9.5 to 1 comp made 538 hp and 502 tq went 10.70s it seems I keep lowering the compression and with cam and head technology keep making the same power even better now as I can use pump gas.