rear end issue

[dolben13]

For who has some ideas I own a 1981 corvette for the last two years I have been tring to fix this problem. after driving the car for a while around speeds of 35 down to zero foot off pedal I am getting a clunking noise notice it more if i apply the brakes. also noise come from passenger side also cornering at low speed turning left. This is what has been done the differential has been serviced twice by contes corvette milville n.j. all rear bearing ans seal replaced whole rear & front suspension replaced, new rotors, pads, emergency brakes and cables, new u-joints (twice), shocks replaced, changes fluid many times added addivtive in rear up to two bottles, also tried ls1 additive. The list goes on and on. contes has told me twice that the differential looks great. I sounds to me its more brake pad chatter but i also have those plastic inserts installed on the pads, the calbers are new and on that side I also replaced that calber again. does anyone have any suggestions or ideas I few at this time its not in the differential but could be wrong.

[c4c5specialist]

HI there,
It would be suggested to use a chassis ear on different points in the back of the car.
Check all the mounts and bushings for ground outs.
But honestly, it sounds like you have MORE than one noise.
Ask them if they have a chassis ears and is there someone who can drive it with you, so you can show them the noise.
Allthebest, c4c5

[Eddie 70]

Sounds like you have covered most of the bases so far. The only thing that I see you have missed is the pinion snubber. Try replacing this and see if it takes care of the issue. Usually the pinion snubber shows up when you put the car in drive, clunk, or put the car in reverse, clunk.