I was having a problem with my 72 Z hesitating and backfiring when warm, and no top end HP. I did a complete tune up, valves, points, plugs, carbs, fuel filter, and still had the problem. I never would have thought of it, but one of my friends suggested the coil was bad, and sure enough, replacing the coil fixed the issue. I wish I would have thought of that first.

DT

True, but look at all the GOOD things ya did for her in the process. Bet she runs like a top now, right?

She runs better, although it seems like there is still something lacking at high RPM's. It just doesn't seem to have the torque I'm used to. Maybe I was just spoiled by my last Z that had a hot cam and Webers...