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Gear Ratio

This is a discussion on Gear Ratio within the Drivetrain forums, part of the LSx Technical Help Section category; need help on what size are the stock gears on a 1999 ponitac trans am?...

  1. #1
    Stang Killer TransAmFanatic's Avatar
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    Gear Ratio

    need help on what size are the stock gears on a 1999 ponitac trans am?

  2. #2
    King 0f n00bz shady milkman's Avatar
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    for?? a a4 hi-po is gear ratio is 3.23.
    Last edited by shady milkman; 03-28-2008 at 01:46 PM.

  3. #3
    Member Cronex's Avatar
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    ...performance option for an A4 is 3.23's. The standard is 2.73's.

  4. #4
    Stang Killer TransAmFanatic's Avatar
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    thanks guys

  5. #5
    Member Cronex's Avatar
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    2001 Trans Am #693

    No problem.

  6. #6
    King 0f n00bz shady milkman's Avatar
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    blacker than wesleysnipes
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    Quote Originally Posted by Cronex View Post
    ...performance option for an A4 is 3.23's. The standard is 2.73's.
    i'm sorry your right..you would think i would know my own gears..by the way the rpo code for the 3.23 is gu5 .and gu2 for 2.73s
    Last edited by shady milkman; 03-27-2008 at 09:45 PM.

  7. #7
    Member Cronex's Avatar
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    Its cool. Figured I'd just chime in and help out. Sometimes people forget, no biggie.

  8. #8
    Senior Member slims00ls1z28's Avatar
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    Easiest way to tell, if the driveshaft is rusty you have 2.73's if it is still aluminum 3.23's.

  9. #9
    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by slims00ls1z28 View Post
    Easiest way to tell, if the driveshaft is rusty you have 2.73's if it is still aluminum 3.23's.
    really? i never new that.

  10. #10
    Just me Y2KPewterSS's Avatar
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    Quote Originally Posted by slims00ls1z28 View Post
    Easiest way to tell, if the driveshaft is rusty you have 2.73's if it is still aluminum 3.23's.
    Unless a previous owner switched shafts.
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  11. #11
    Member jujofields's Avatar
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    Quote Originally Posted by slims00ls1z28 View Post
    Easiest way to tell, if the driveshaft is rusty you have 2.73's if it is still aluminum 3.23's.
    Huh, I've never heard that before....

  12. #12
    Senior Member slims00ls1z28's Avatar
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    2005 GTO M6 Black
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    2.73 cars came with steel driveshafts (hence rusty). 3.23 Cars with the aluminum one (not rusty). Part of the package. If previous owners switched them out it is an entirely different ball game of course.

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