My 390 with 428 crank has a Mallory distributor #2555301. Mechanical advance only, YL series advance plate. Pertronix kit replaced the points. Someone before me bastardized the springs so the advance does not snap back fully retarded at engine shut off.
This is causing my hot hard start problem. What color springs make a good curve for this engine?? I just ordered from Jegs the Mallory advance curve change kit #29015. Any Mallory fans out there?