446 with stock edelbrocks, m1 intake 13:1 compression with forged Ross pistons, steel crank, H-beams, 1/2 inch studs in main bearings, Crane roller 630 lift with 268 & 278 at .050 duration. 3400lb 70 Dart with me in it, 456 gear, Pro-trans with 3500 converter, leaving on the footbrake from 2000...