Ok. I just swapped a worn performance cam for a stock cam. The cam had a few worn lobes which I thought were leading to a less than smooth operation. Well, I swapped the cam and, what seems like a mild vibration is still there. I think I can hear it and I can see the steering wheel shudder a bit. It feels like it’s slightly out of balance. My sense is now, beware of what you suspect more often than not, it can be something completely other. But it feels like something out of balance So the things is could be: - inconsistent ignition - worn mounts - clutch assy wasn’t properly aligned - vibration damper is dead - rotating assembly is out of balance - accessories and water pump How does one check these things ? My ignition looks new under there. I’m going to put a temp gun onto my exhaust headers to see if one is running cold.