Ok here is my delima. I am still working on the Vette before I put it on the road. Well I was checking out the rear brakes and rear suspension. I decided to crank it up and let the rear wheel turn. Well there was a thunk, thunk thunk noise coming from the rear end. The right rear rotor is warped so I too it off to see if that might be it. Well it wasn't! (surprise) Then I thought, well let me take the half shaft out and see if it still does it. When I did this the noise went away. The u-joints seam to feel pretty good. Nice and smooth through all positions and movement. The ony thing that I can think now is it is in the Trailing arm. The bearing maybe? It doesn't seem to feel bad or have any free play in it as I can tell. It is a little hard to turn though. (stiff) I didn't do anything to the driver side, but I did notice some vibrating (movement) as the rear end turned it.  What could this be? Is this something a trailing arm could do? Could it be the rear end? I hope not!

 

Please help me out here. I need to get it fixed, but don't want to be spending anymore than I have to right now.

Thats cool, I was planning on replacing the u-joints anyway.

Thanks for your help.