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rear end

This is a discussion on rear end within the Drivetrain forums, part of the LSx Technical Help Section category; man its a bad day i just blow my rear end or maybe its a good day now i can ...

  1. #1
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    black
    02 trans am ws6

    rear end

    man its a bad day i just blow my rear end or maybe its a good day now i can upgrade it but what is better to rebuild it or just jump in for a moser 12 bolt or a 9 in and what gears to put in it any input would help

  2. #2
    Manhattan Trans Am SHovV's Avatar
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    Medium Blue Metallic
    '99 T/A-7.0L-6spd

    moser 9" FTvV

    18x12 Classics w/335's and room for 345's

  3. #3
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    tell us everything about your car's mods and we'll help you with a gear ratio

  4. #4
    Veteran Hi-Po's Avatar
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    1999 TA WS.6

    9"

    What are details on your car for gear ratio.

  5. #5
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    02 trans am ws6

    i dont have any mods yet but i plan to change ls1 for a ls2 and trans

  6. #6
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Auto or manual?

  7. #7
    Rice Killa JwMonE99's Avatar
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    Black With T-Tops
    96 Z28 M6

    Auto go with a 12 bolt with 3.73s
    6 speed go with a 9 inch with 4.10s

  8. #8
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    Question

    so whats in the rear now 373 or what

  9. #9
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    no. you should read the option codes and find out. 2.73's (GU2) 3.23's (GU5) for autos 3.42's (GU6) for M6.

  10. #10
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    Question

    ok i see i have 3.23 so 3.73 is the way to go . for an auto why not 4.10 whats the difference

  11. #11
    Impounded
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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Quote Originally Posted by txoutlaw69 View Post
    ok i see i have 3.23 so 3.73 is the way to go . for an auto why not 4.10 whats the difference
    4.10s would absolutey destroy the cars highway drivability. m6s transmissions have a lower output ratio then a4s

  12. #12
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    thats good to know cant have that so its 3.73 thanks for your help what about the spindal 28 31 33 does it matter

  13. #13
    Impounded
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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Quote Originally Posted by txoutlaw69 View Post
    thats good to know cant have that so its 3.73 thanks for your help what about the spindal 28 31 33 does it matter
    Gear ration will not affect spline count on the axles unless you change the differential etc etc. Gears are a bolt in,then adjust then go thing

  14. #14
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    02 trans am ws6

    ya i plan to change every thing

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