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posi= gears?

This is a discussion on posi= gears? within the Drivetrain forums, part of the LSx Technical Help Section category; in a v6 firebird will just changing the gears in the rear to 4.11 or 3.73 give me posi?? will ...

  1. #1
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    1996 firebird

    posi= gears?

    in a v6 firebird will just changing the gears in the rear to 4.11 or 3.73 give me posi?? will i need diff axels as well?? any help appriceated because im totally lost in rear ends
    tks in advance

  2. #2
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    red
    1996 firebird

    better yeet what is needed to posi a v6(for now) firebird

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    Life in the Fast lane sunsetorangess's Avatar
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    Posi Ten bolt out of a stock Z-28...
    J
    2001 SS, Its not the car its the Driver that matters....

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    Member joedude02's Avatar
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    Quote Originally Posted by sunsetorangess View Post
    Posi Ten bolt out of a stock Z-28...
    J

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    The Bandit Wesman's Avatar
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    Quote Originally Posted by 96cherrybird View Post
    in a v6 firebird will just changing the gears in the rear to 4.11 or 3.73 give me posi?? will i need diff axels as well?? any help appriceated because im totally lost in rear ends
    tks in advance
    You would need the gear set, as well as the differential itself. Axles should be the same.

    Or, as the other guys said, just get a complete rear out of any 98-02 V8 F-body that has the same ABS system that you have (3 or 4 channel).

  6. #6
    James Bond Spikito's Avatar
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    2001 3.8 Black - sold
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    so Z's came with posi and and v6's came with LSD?

    I was just wondering about this the other day

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    Senior Member Orcus79's Avatar
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    posi and LSD technically are the same thing, though some of the older guys will argue that. As far as I know, unless the performance axle option was picked, the V6s got the open rear diff.

  8. #8
    James Bond Spikito's Avatar
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    ive always thought LSD was close to full posi, but they work a little different.

    Im thinking on a lift, with LSD if you turn one wheel, the other spins opposite, with posi they roll the same.

  9. #9
    The Bandit Wesman's Avatar
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    Quote Originally Posted by Spikito View Post
    so Z's came with posi and and v6's came with LSD?

    I was just wondering about this the other day
    Positraction and Limited slip are essentially the same thing. Basically a type of differential that distributes torque to both wheels, instead of just one wheel as in an open differential.

    All 98-02 V8 F-bodies came with limited slip differentials, early models were clutch type (Auburn), later models were helical gear type (Torsen).

    A select few V6 cars were available with limited slip diffs, I believe it was part of some "performance package".

  10. #10
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    Smile

    im thinking to just get the diffriential and gears shipping out here in ns for a whole rear end is expensive.. just getting that and i should be good to go correct!? any recomedations on diffs im looking at summit racing website and they seem to have a good selection and decent prices. thanks for all the help

  11. #11
    Moderator Cutlass's Avatar
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    Dartmouth, Nova Scotia?
    Just FYI, rear end gears require a precise install and setup. If you don't know how than find someone who does. Or find a whole rearend assembly at a junk yard

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