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Rear End Gear Breakin

This is a discussion on Rear End Gear Breakin within the Drivetrain forums, part of the LSx Technical Help Section category; I'm getting some 4.10 gears installed this weekend. I've heard from several people that you don't have to go easy ...

  1. #1
    Rice Hungry GottaHaveLS1's Avatar
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    Rear End Gear Breakin

    I'm getting some 4.10 gears installed this weekend. I've heard from several people that you don't have to go easy on the car for so long. they say you just have to go through a couple heat cycles and then they will be fine. I think i read on here that I should go through a 500 mile breakin period and then change the fluid. what do you all recommend?
    1999 Trans Am M6
    SLP Short Throw, Lid and CAI, BMR STB and SFC, UMI PHB, Pacesetter LT's and ORY, Magnaflow Catback, DMH 3" E-Cutout, LS7 Clutch, Motive 4.10, 160 T-Stat, MSD, !AIR, !EGR, 17x9.5 Chrome C6's wrapped in Hankook 275/40/17

    Tuned at Mongillo Motors in New Haven, CT

  2. #2
    Rice Hungry GottaHaveLS1's Avatar
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    no one? nobody has done a gear swap before????

  3. #3
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    The heat cycles are most important but I would also take it easy until you change the fluid. Proper install and break in will keep the whine to a minimum.

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