Chasander Posted October 16, 2021 Share Posted October 16, 2021 Most of the cars life I run a 3.90 gear. A while back I found a used 3.36 and had it installed. This gear has a high pitch sing and I want quiet. I know there are new after market gears available but I hear there not quiet ether. What are others experience with after market gears. It thinking it would be impossible to find a NOS set. Link to comment Share on other sites More sharing options...
LARRY70GS Posted October 17, 2021 Share Posted October 17, 2021 I don't believe aftermarket gears are noisy. It all comes down to whether the installation is proper. I have Yukon 3.73's in my car and they are silent. Link to comment Share on other sites More sharing options...
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