Alright, I wire brushed it a little more and found some marks. Assuming that each one is 2 degrees. I set it to 8 degrees which is just before the A.

I also just tried the vacuum advance again and I checked the idle without it, plugged it in, and then checked it again and it was either the same or retarded a degree.

I also looked at the vacuum advance and I'm not sure if it's working correctly. At idle it doesn't look like it's doing anything and as soon as I give it maybe 200rpm more than idle, it engages fully. When not idling, it then either stays at the fully advanced position when opening throttle or it sporadically moves back and forth between full open and off when changing throttle position. Does this mean that the mechanical springs are off or something? Isn't it supposed to engage gradually as you increase the throttle?

Last edited by snowman4839; 08/23/10 12:49 AM.

69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.