Ron, I have never run the 650, but a local racer had one in a 499 with ported 440-1 heads, 3200 lb car went 9.70s If I recall correctly. I would think that cam should make within 50 hp of a big roller?

Last edited by gregsdart; 12/11/12 10:57 PM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky