Ive used quite a few in buget builds scat and ohio crankshafts cast steel. Builds that you may know Lookers cig boat 4.615 bore 4.250 stroke 765 hp ohio crank 6 years now still going, Toms 505 pull truck 13 1/2 comp 7800rpm 800+ hp scat 9000 pulled three years motor still runs good its in my shop forsale he upgraded, spacemans 505 in his 67 camaro, Georges 505 in his 68 camaro hope this helps.