The gear has whined in my car since the day I bought it. The whine was between 60-80 mph. It has gotten progressively worse. I gave up on getting them warrantied after I learned my axels were bent. I decided to just pay someone to install new FMS 3:73 gears and Moser replacement axels.
The installer told me it appeared to have been run low on gear lube and that there were metal shavings. The car has 10,000 miles. He said it looked like a high mileage rearend. I never checked the lube but the dealer assured me that the lube had been changed and friction modifier had been added. The installer found that hard to believe.
I know I bent the axels using drag radials. The installer found that hard to believe as well.
If your gears whine and you are on the fence about replacing them, I assure you that you will be happy with a quiet rear end. I was hesitant to do it because I thought the whine was resinating through the pumpkin where the UCA connects. The noise came from the gear, not the UCA.
It's a shame that a $50,000 car came with a noisy rearend and that I had to pay to get it fixed. But it is what it is and I'm happy to have fixed the only thing I didn't like about the Boss.
The installer told me it appeared to have been run low on gear lube and that there were metal shavings. The car has 10,000 miles. He said it looked like a high mileage rearend. I never checked the lube but the dealer assured me that the lube had been changed and friction modifier had been added. The installer found that hard to believe.
I know I bent the axels using drag radials. The installer found that hard to believe as well.
If your gears whine and you are on the fence about replacing them, I assure you that you will be happy with a quiet rear end. I was hesitant to do it because I thought the whine was resinating through the pumpkin where the UCA connects. The noise came from the gear, not the UCA.
It's a shame that a $50,000 car came with a noisy rearend and that I had to pay to get it fixed. But it is what it is and I'm happy to have fixed the only thing I didn't like about the Boss.