hey all. I have a 69 chevelle with a stock 250 in it. when i go from stop to go i have to feather the gas to get it to move. if i try to go to fast it backfires and stalls. once its moving its fine. any ideas? thanks kev.
Sounds like vacuum advance. If you feather it to go, I would think the accelerator pump is good. Take distributor cap off and suck on vacuum line to dizzy. The arm from the vac adv should move.