1.25 or so HP/C.I. from a 390

It's fairly easy to do. As BJR says, he's doing it with smaller inches and rpm. IMO, the stroker will do it with less inches and rpm. In any event, it's not that hard. You will need good heads, and the cam will negate power brakes, but otherwise it's easy.


But I don't turn the engine over 6000 rpm's. peak Tq. is at 4500 rpm's and peak HP is at 6000 rpm's so theres no need to turn it any harder. Peak Tq is 484 ft. lbs. @ 4500 and 501 HP @ 6000 rpm's.