[mr0077]

Like another thread on a 351W, I'm wondering what you FE guys are running and recommend for ignition timing curves. I have an MSD dist, mechanical advance-only. My dyno guy said it made best power at 38 degrees, so I kept fiddling around with it working on drivability, working backwards from 38 deg. Right now have it with 20 deg initial, 18 deg mech adv for a total of 38, all in by 2800. Feels good coming off idle, but sometimes cruising at about 2000 rpm I feel an occasional surge, like it has too much advance. Huh? With no vacuum advance, I'm surprised at that, but...and when I drop the initial timing back (16 or 18) it tends to bog a little more coming off the line. The motor has Edelbrock heads and intake, 780 Holley, 282/.571 solid cam, 10.5:1...
Anybody out there running different curves, and how do you like 'em, for best drivability and for best power? TIA