Timing issues

Run as much intial timing as you can with the 509 cam in a SB. Recurve the distributor if you have to get at least 18-20 degrees intial while keeping total at 34-36 degrees.

You'll need 3.91 or 4.10 gears with it also.

The 509 cam does pull very strong from 2500-6500rpm but is kinda piggish down low.:-D