So it's been several months, the car is back together, and I've put I'm guessing 1500 miles on the novice rebuilt rear end. It drives very well with no knocks or clunks from the rear. What I do have though is a bit of a ringing sound coming from the rear during cruising at highway speeds. It quiets down if I accelerate or decelerate, but then the ring returns once speed is stable again.
At first, I thought it might have just been new gears wearing in and they'd quiet down, but that hasn't happened. Most research I've done gives symptoms of noise while accelerating but quiet at cruise, which is the opposite of what I'm experiencing.
Thoughts on what I should look at? I did go back and find these notes from my build thread in February where I noted that preload was lighter than spec but any other shim combo I tried made it too tight. I'm ready/willing/able to tear it back apart and make adjustments, but just not sure what to look for and open for ideas. Maybe redo preload and see if I can get it in spec? If I can't, is tighter better than loose?
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