Quote: I used to have to retard the initial timing on the 360 2bbls to get them through. The numbers I can't recall right now.
Yep--Pull about 4 degrees out of the intitial timing for one. Also: 1) Remove air filter from the cleaner housing 2) There is an allowable maximum for idle RPM--you want to raise yours so its close. Our max used to be 1200, I would raise the idle to about 1000 and it would clean up nicely compared to 750.
