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gear question

This is a discussion on gear question within the Drivetrain forums, part of the LSx Technical Help Section category; i had an issue at the track and my rear got screwed up somehow. if the gears are messed up, ...

  1. #1
    Member tav8ws6's Avatar
    Join Date
    Nov 2006
    New Jersey

    Sunset Orange Metallic-M6
    2002 Pontiac Trans Am WS6

    gear question

    i had an issue at the track and my rear got screwed up somehow. if the gears are messed up, (which i dont think they are), what new gears should i go with? I will be installing Pacesetter LT's with a Texas Speed and Performance 3 in. Y-pipe with catalytic convertors, and a Magnaflow Cat- Back, this winter. with that setup, would 3.43 gears be a good match for now or should i leave the stock 3.23 gears in?

    if i go for something like 3.73 will i be burning too much fuel if im cruising on the highway, or at 80 mph? i want my car too be 100% streetable, and have as little drawbacks as possiblle

    I have a 2002 Trans Am WS6 with an automatic tranny

  2. #2
    Senior Member
    Join Date
    Jul 2005
    Jacksonville, FL
    There's not enough difference between 3.23/3.42 - if you need new gears I'd go with 3.73. This is from

    3.23 @ 71 MPH = 2100 RPM
    3.42 @ 70 MPH = 2200 RPM
    3.73 @ 70 MPH = 2400 RPM

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