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  • Differential

    I thought I'de post this here rather than the lounge since its more appropriate.
    Is the rear end on a non-Y87 car already set up to take a limited slip differential? How hard is it to install it? Anything special that needs to be done?

  • #2
    The rear end on a Y87 and a non Y87 are the same, except for one has the limited slip "carrier" and the other doesn't. If you get a new or used LSD carrier, a rebuild kit, and the proper fluids and additive, you have all you need to bring it to a shop.

    In short, if you get the correct LSD carrier, it's designed to bolt up in there with no modifications. You want a 3-series carrier to match with 3.23 rear gears and higher, and a 2-series carrier for 3.08 and lower.

    Install requires many hours, a good bit of disassembly, bearing pullers, dial gauges, experience, and luck. Most people leave this to a professional mechanic. There are install guides here if you search a little. There are also stories of what happens when you screw up the install by doing it yourself...
    \'00 f-bird 3.8 M5 coupe, pewter metallic<br />Torsen LSD, Pro 5.0 shifter, Spec stage 1 clutch, Y87 muffler, aftermarket stereo<br />-more fun than the Oldsmobile it replaced...

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    • #3
      Anyone here had a mechanic install it before and can tell me how much it cost? I know it will differ depending on a whole bunch of factors but i'de like a ballpark figure.

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      • #4
        Cost me $300 for the labor.
        \'00 f-bird 3.8 M5 coupe, pewter metallic<br />Torsen LSD, Pro 5.0 shifter, Spec stage 1 clutch, Y87 muffler, aftermarket stereo<br />-more fun than the Oldsmobile it replaced...

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        • #5
          its cheaper to buy a rear end with the lsd and 3.42 gears and put it in yourself.
          2001 Arctic White Firebird With Black Drop Top<br /><br />3:42 Gears<br />Zexel LSD<br />BMR upper A-Arms<br />Trans Am exhaust with 3\" I-pipe and cutout<br />Modified intake<br />Mecham Hood<br />Trans Go shift kit<br />Making rear control arms and panhard

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