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rear end gear for 7.5 10 bolt

This is a discussion on rear end gear for 7.5 10 bolt within the Drivetrain forums, part of the LSx Technical Help Section category; I tried to find my answer in other post but could not. I am looking for ring and pinion upgrade ...

  1. #1
    Member slikws6's Avatar
    Join Date
    Feb 2008

    1998 WS6 Convert

    rear end gear for 7.5 10 bolt

    I tried to find my answer in other post but could not.
    I am looking for ring and pinion upgrade from 3.23 to 3.90 on an A4.
    In looking I have noticed some are labeled thin and some thick.What is the proper thickness for a 1998 ws6 with factory Aurburn 3.23 rear end?


  2. #2
    Member ultra_badass's Avatar
    Join Date
    Mar 2007
    Corpus Christi

    navy blue matallic
    2000 WS6 trans am M6

    i just orderd mine from summit $125 then after the install kit and overnight shipping it was like 184 which isent bad at all..if you get the thick gears your going to need to get the adapters for them but really no reason to get the thick gears

  3. #3
    Junior Member SummitTech's Avatar
    Join Date
    Feb 2008
    Tallmadge, Ohio
    The MGR-G875390 will fit a factory 3.23 and numerically higher carrier. (7.5" or 7.625" ring gear) Currently we have a promotion on this gear set, BUY A QUALIFYING RING & PINION, GET A FREE MGR-GM7-5IK INSTALLATION KIT! ($30.39 value)
    I do not have a 3.90 ratio in a summit gear, just 3.73 or 4.10.
    If you need more than a basic install kit, we have different levels of kits.

  4. #4
    Internet Tough Guy Fury_786's Avatar
    Join Date
    Nov 2007

    Sinister, SixGun
    2001 SS, 2002 L36 M5

    ive ordered the 3:42's from Summit, they are awesome and went in great!

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