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rear end

This is a discussion on rear end within the V6 forums, part of the Vehicle Specific category; who knows what is a good gear for the rear for good preformance ? and what is the stock...

  1. #1
    Junior Member red-bandit's Avatar
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    red
    2000 pontiac firebird v6

    Lightbulb rear end

    who knows what is a good gear for the rear for good preformance ? and what is the stock

  2. #2
    Member MegaMan's Avatar
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    95 firebird

    Hmmm, 2000 I want to say is 3.23 but don't quote me. 3.73s is a common choice, 4.10s for the more serious drivers. You'll lose some fuel economy during highway driving either way, moreso obviously with the 4.10s.

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    black
    96 v6 firebird

    Do you have an auto or manual? Look in your glove box and find the code that say GU and a number.


    Rear end Gear codes are as follows:


    GU4=3.08 auto
    GU5=3.23 manual
    GU6=3.42 both


    As far as a good gear, What do you want the car for.

    Track= 4.10's

    Street and Track= 3.73's

    Mostly street, just wanna have a little fun= 3.42's


    These are just my opinions.

  4. #4
    Junior Member red-bandit's Avatar
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    2000 pontiac firebird v6

    have auto think i am going to go with 3.73 and put a couple more preformance parts on

  5. #5
    car enthusiast djvaly's Avatar
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    Quote Originally Posted by red-bandit View Post
    have auto think i am going to go with 3.73 and put a couple more preformance parts on
    get a rearend bolt before putting 3:73 in a stock 10 bolt. if you track it often you'll need a 12 bolt rear end since the stock on will give up eventually. actually the stock bolt as I heard from many member on here, whines and leaks even if you don't track it as well. Also the 3:73 gears for 10 stock bolt do not match the 12 bolt.
    I'd say spend the 2k for a new 12 bolt now then put in 3:73 gears. in case you need to upgrade to 12 bolt a bit later you don't wanna waste the 400 bucks on gears.

  6. #6
    car enthusiast djvaly's Avatar
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    I assume the same story follows for v6 vs v8... I just saw you have a V6 so I think the same applies.

  7. #7
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    1996 Camaro 3.8L

    Quote Originally Posted by crushedout View Post
    Do you have an auto or manual? Look in your glove box and find the code that say GU and a number.


    Rear end Gear codes are as follows:


    GU4=3.08 auto
    GU5=3.23 manual
    GU6=3.42 both


    As far as a good gear, What do you want the car for.

    Track= 4.10's

    Street and Track= 3.73's

    Mostly street, just wanna have a little fun= 3.42's


    These are just my opinions.
    In complete agreement

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