...i have a 415 small block sitting in my garage that put out 448 HP @5250 & 499 Ft Lbs @ 4000 {flywheel dyno}. Its bored .060 over, cast crank, stock rods, TRW forged pistions {#L2467}, AFR 195 heads with 2.05 intakes & 1.625 exhausts, 76 cc heads, Crane cam {224/234 @ .050"}, lift is around .520 with 1:6 roller rockers, Edelbrock Performer RPM manafold with a 850 double pumper..... It was a really great torque motor! Was??? well, it sat for 9 years and rusted. Now I'm up in the air about what to do about it. I want to supercharge it but after asking on the board and now after pulling the heads I see that the distance between the cylinders is only about .1875" and thats not enough for a supercharger. I wish now that I didn't bore it so far or at all!!!}. Anyway, NO problem at all with over 400 HP...... {oh, my engine could have handled a bigger cam. Would have put out A LOT my HP with one.......