Originally Posted by fast68plymouth
Well, the top end is already sorted out.......
500”, decent cam, enough CR, ......... 700 wouldn’t be that hard.

The “intended use” dictates several of the decisions...... including the cam.

The intake, cam, carb, headers can easily move the number from under 600...... to over 700....... from the same basic long block.


That's correct. My 11:1 CR with a Dwayne Porter cam made 713 hp and 709 torque for my street/strip motor. Max HP rpm was around 6000 rpm. 505 CI.

Last edited by markz528; 05/27/20 04:47 PM.
67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......