Zacks94Z
05-18-2014, 02:59 PM
Hey guys got a quick question. Planning on going with 3.90 rear gears in my 10 bolt. Should I be concerned about replacing anything along with the gears? I had the rear end rebuilt about two years ago with mostly new stock replacement parts nothing fancy. The car is an A4 (4L60E) with a 2500 stall and I will be on some mickey e/t streets with a 150 shot (but not until 2nd gear). Will it hold decently well just replacing the gears and well bearings of course?