Another Vibration Thread with a Twist

Thanks all. Got a damper coming from a junk yard. Will see what happens.

 

I had a very similar issue turned out the trans mount was toast, also 5 spd truck

 

Trans mount is good. Thanks.

 

Updating this. The diagnosis is that the pilot bearing failed (no noise heard by me) which in turn led to damage to the input shaft/bearings. So trans will be rebuilt. Having them put the Marlin Crawler shifter bushing in, even though I never had any issues there. New clutch, including resurfaced flywheel, shift fork, pilot bearing, T/O bearing, rear main seal. Truck is still in the shop. Supposed to be done before the weekend. Oh by the way, my T-case doesn't have holes to mount a dynamic damper so that was $65 wasted.