Vibration

Before you go to much further, do yourself a favor, drop the fan belt off and start the car up to see if the vibrtation is still there. I was chasing a bad harmonic vibration for a long time, was thinking crank or converter, I had confirmed the correct HB, flex plate, converter weights all correct, it vibrated like a ***** in P, N, D, damn near couldnt see out the rear view mirror, dash would hum,,,,,,, got the better of me took the belts of, turned out to be an out of ballance stator in my alternator, replaced it and smooth as a gravy sandwich!!