a fella down at the local track told me that he had a 3:73 gear out of a S10 that would work in my 94 Z28 A4. So I gave him 50 dollars for it. Me and my brother installed it this weekend and it whines about 40mph and up. The pinion gear is tight and it went back in great with no problems. I was just wondering what I need to buy or do to get the noise out. If I can't fix it is there a gear out there that dont make that awful noise. If not the stock gears go back in this weekend.

Thanks
Josh

 

anybody? there sould be a tool or installation kit or something.

Josh