Been chasing an under load vibration for a while now. Most apparent in the 1100-1800 range when under load with tq converter locked up, and the vibration is the same in 3rd or 4th gears when locked up. Checked out the dampener, didn't look bad. Pulled the plate off under the flywheel and shot this video.


How much is normal and is this way out of spec or not?

 

This looks about normal the best I can tell. If it was doing the major funky chicken, then I would worry. If you have had the tranny our before, I would disconnect all the TC bolts, spin the TC 180 deg, then connect them all back up making sure the TC is centered on the flexplate. After that, torque them down to spec. It is a common install error that can be made by tightening down on the first bolt all the way to spec. They need to be ran down equally and then torqued to spec. (TC bolts connecting to flexplate)

 

Looks normal to me.

 

Thanks guys. It's all original. Just wondering how much of that was acceptable.