Discussion Starter · #1 ·
Ok, took the car out yesterday, runs great as usual. Noticed a little more lean surging/bucking at cruise than usual. Probably cause its been a little cooler out lately. Looks like I'm going to 76's. Is it possible that the manifold vac advance is pulling too much timing? Would timing impact jetting? I know you guys have hotter engines and are running around 74's, cant see why I have to run so rich (72 is stock in the front).