Vibes - Still

[RCP Phx]

That's typical for the trans input shaft, as already stated the flywheel pilot bearing picks-up that end of the shaft.

 

[rmoorex]

That's typical for the trans input shaft, as already stated the flywheel pilot bearing picks-up that end of the shaft.

So you do not think that shaft is too loose?

 

[trippled]

It looks pretty normal. Like said, if the problem goes away with the rear shaft removed it is pretty unlikely the problem is in the trans. Focus on what's changed that could cause the vibration.

 

[RCP Phx]

After watching your vids again this afternoon, I would also look seriously at your pinion bearings.

 

[rmoorex]

After watching your vids again this afternoon, I would also look seriously at your pinion bearings.

OK. Will check. But the ring/pinion and all bearings were changed in the rear.

 

[RCP Phx]

Well it's either the SYE, the driveshaft, or the pinion. I would also check the engine alignment since it's not uncommon to install the crossmember backwards and also check the axle for alignment.

 

[Jody Treadway]

Any chance your transmission crossmember is 180* out?
One time way back in the day I did that and the rear shaft was cocked over to the side a few degrees and caused vibes that weren't there prior.
I noticed the witness marks on the crossmember and saw I had re-installed it 180* out.