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Gears

This is a discussion on Gears within the Drivetrain forums, part of the LSx Technical Help Section category; Where Do I Find Out What Kind Of Gears I Have In My Car I Have A 99 T/a...

  1. #1
    infantryman tingo99's Avatar
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    white
    1999 trans am

    Gears

    Where Do I Find Out What Kind Of Gears I Have In My Car I Have A 99 T/a

  2. #2
    Member MikeMoss's Avatar
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    Rally Red
    2001 Camaro B4C

    RPO codes

    GU2 Axle Ratio 2.73, Rear
    GU4 Axle Ratio 3.08, Rear
    GU5 Axle Ratio 3.23, Rear
    GU6 Axle Ratio 3.42, Rear

    It says that is for 2001 but I would think that it would be the same.

    http://www.bowlingss.com/RPO%20Code%20List.htm

    Real Deal Guys! RPO codes For Our Cars!

  3. #3
    Junior Member
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    1999 Z28

    Look for the RPO code on the inside of the driver's door.

    GU2 2.73 Rear Axle
    GU5 3.23 Rear Axle
    GU6 3.42 Rear Axle

  4. #4
    Member RARON455's Avatar
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    white
    98 Ram air T/A Ls1/T-56

    If you cant figure that out, jack the rear of the car up, put it in nuetral, make a mark on the drive shaft, and then on the tire have someone spin the tire one whole revolution while you are under the car and count how many times the drive shaft turns.

    example, tire turns 1 revolution and the driveshaft turned about 3 and a 1/2 turns

    your ratio would be a 3.42 etc. the code on the door is easiest, as long as the gears are stock.

  5. #5
    Junior Member
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    Black
    2001 Camaro Z28

    Quote Originally Posted by RARON455 View Post
    If you cant figure that out, jack the rear of the car up, put it in nuetral, make a mark on the drive shaft, and then on the tire have someone spin the tire one whole revolution while you are under the car and count how many times the drive shaft turns.

    example, tire turns 1 revolution and the driveshaft turned about 3 and a 1/2 turns

    your ratio would be a 3.42 etc. the code on the door is easiest, as long as the gears are stock.

    huh - learn something new everyday - sucks though that mine says gu2

  6. #6
    infantryman tingo99's Avatar
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    white
    1999 trans am

    cool thanks

  7. #7
    infantryman tingo99's Avatar
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    cool i have gu6

  8. #8
    Senior Member INMY01TA's Avatar
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    Black
    2001 Trans Am (sold)

    If your car is a six speed, all six speeds got 3:42s.

  9. #9
    Member TedsB4Csled's Avatar
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    white
    2002 B4C

    Need a set of 323's? Just swapped mine for 373. Shifts to quick now, I thought it would let RPMs climb more in lower gears for auto. Highway RPMs are higher, sucks. I wish I kept 323 and got a tune instead. WOT is cool though.

  10. #10
    The Bandit Wesman's Avatar
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    SGM
    1998 Trans Am WS6

    Quote Originally Posted by MikeMoss View Post
    RPO codes

    GU2 Axle Ratio 2.73, Rear
    GU4 Axle Ratio 3.08, Rear
    GU5 Axle Ratio 3.23, Rear
    GU6 Axle Ratio 3.42, Rear

    It says that is for 2001 but I would think that it would be the same.

    http://www.bowlingss.com/RPO%20Code%20List.htm

    Real Deal Guys! RPO codes For Our Cars!
    What F-body came with 3.08's??

  11. #11
    Just me Y2KPewterSS's Avatar
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    Pewter metallic
    2000 Camaro SS

    Quote Originally Posted by Wesman View Post
    What F-body came with 3.08's??
    V6s
    CCW SP 500s 18x10 275/35 18x11 295/35
    SLP CME with GMMG style catback
    Painted manta stripe

    Quote Originally Posted by konigandy6 View Post
    I'd rather be bi than full homo!!!!

  12. #12
    The Bandit Wesman's Avatar
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    Quote Originally Posted by Y2KPewterSS View Post
    V6s
    Ahh, gotcha. Didn't think of those.

  13. #13
    Mr. P dparsons1968's Avatar
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    Bright Red
    99 Z28 M6, 03 Gixxer 1000

    Are those codes good for a 99 Camaro M6 also?

  14. #14
    Just me Y2KPewterSS's Avatar
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    Quote Originally Posted by dparsons1968 View Post
    Are those codes good for a 99 Camaro M6 also?
    Yes

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