Looking for help. Have a 91 z28 that had a rearend whine. Ended up being a pinion bearing failure. Replaced all bearings and changed gears to 3.73.
Now that the rear has seemed to quiet down, it sounds like I have a whine from the transmission (700R4) area. It can be heard while accelerating and decelerating but quiets while at a steady speed. Anybody's experienced comments and suggestions are welcome.

 

Hmm. No one with advice?
Maybe I can help myself think this through. What I failed to post earlier was right before the rear started howling, I installed a set of Eibach Sportlines. Whats the chances that I need to get an adjustable panhar bar? Could the whine be a result of the rear shifting?

 

Well, here's what I did. Installed a Hotchkis adjustable panhard bar. The whine is gone. The lowering must have put the drive shaft out enough to cause a whine. Back on the road again!!

 

Looks like you answered all your own questions. lol Sometimes find the problem yourself is more gratifying anyway. Way to go.

 

Thanks!! On to the next project...lol