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  • Limited Slip Diff confusion need some help please

    Hey everyone I am new to the forum ;D. How ever I cant stand driving a semi muscle car that doesnt have a limited slip diff. I have a 2000 red Firebird and I have no idea what gears it currently has. It has the auto trans if that makes a difference to what gears GM dropped in it. But I would really appreciate it if you guys can point me in the right direction as to which limited slip to buy. I was thinking about just getting the stock diff and the SLP install kit with 3.73 gears. Thanks alot and any help would be greatly appreciated.

  • #2
    if its y87 then it has 3.23 and LSD...if not then its 3.08 and open differential... if you switch gears your going to want to put in LSD when you do it since you have everything torn open then anyway. i was just assuming you have a auto... i think someone said oen time all the M5's had 3.23's in them but i might be remembering wrong
    1999 Black Pontiac Firebird <br />2 Rockford Fosgate P312D4 subs <br />Hifonics Brutus 1205d amp<br />Clear Sidemarkers<br />18\" Arelli Jovan Chrome Wheels

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    • #3
      A4 Y87s came with 3.42, not 3.23. Only M5s have 3.23. ;)

      Check the codes on your door to see what you have:
      GU4 - 3.08
      GU5 - 3.23
      GU6 - 3.42
      G80 - LSD

      Best bet is to look on ebay for a used torsen diff. There's been a rash of posts about that same subject lately. Just search for LSD in the drivetrain forum and you'll get a ton of results.

      http://www.camarov6.com/ubb/ultimate...;f=23;t=004363
      Matt
      1998 Mystic Teal Camaro M5
      Whisper Lid, Pacesetter Headers, Catco Cat, Dynomax Super Turbo, B&M Shifter, BMR STB, LSD, P&P Intakes, GT2 Cam, Comp OE Lifters, 1.7 Roller Rockers, Pushrods, SSM Heads, DHP PowrTuner.

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      • #4
        wow thanks alot guys, pretty fast response to. One more thing that I want to ask but I dont want to make another topic lol. I want to get the hypertech 3.8 programmer for my bird what kind of top speed can I get when I remove the limiter?

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        • #5
          HPP3 doesn't have too many fans here. It's pretty much worthless. Look into getting a mail order tune from Texas Speed. You'll be much happier with that.

          With no speed limiter, you'll probably be looking at somewhere around 130-140.
          Matt
          1998 Mystic Teal Camaro M5
          Whisper Lid, Pacesetter Headers, Catco Cat, Dynomax Super Turbo, B&M Shifter, BMR STB, LSD, P&P Intakes, GT2 Cam, Comp OE Lifters, 1.7 Roller Rockers, Pushrods, SSM Heads, DHP PowrTuner.

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          • #6
            how come no fans for the hypertech?

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            • #7
              I got a set of richmond 3.73's and an Eaton diffrental I'm looking to sell. I bought them used but never put them in, decided to go a diffrent direction with the car.

              http://photobucket.com/albums/y217/a...t=100_0289.jpg
              95 Firebird<br /> <a href=\"http://www.cardomain.com/memberpage/673250\" target=\"_blank\">http://www.cardomain.com/memberpage/673250</a> <br /> <a href=\"http://photobucket.com/albums/y217/andrewbrandon19/\" target=\"_blank\">http://photobucket.com/albums/y217/andrewbrandon19/</a> <br /><br />me on a good day------&gt; <a href=\"http://communicatio.webblogg.se/images/wet_cat_113159625.jpg\" target=\"_blank\">linky</a>

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              • #8
                alright, how about GM 3.73's,torsen limited slip, and SLP install kit. Do I need anything else? How much would it cost to have this installed on average?

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                • #9
                  sorry 98 camaro im' just not as smart as you lol
                  1999 Black Pontiac Firebird <br />2 Rockford Fosgate P312D4 subs <br />Hifonics Brutus 1205d amp<br />Clear Sidemarkers<br />18\" Arelli Jovan Chrome Wheels

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                  • #10
                    can someone please answer my last question :/.

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                    • #11
                      about 200 and up to install depending on the shop
                      1997 Camaro LS1 RS
                      1994 Camaro - Sold
                      1999 Trans am Vert - Sold

                      A Few Mods....

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                      • #12
                        I’m not being a smart a** or anything, but we get this same kind of question every week or so. Search = Your Friend ;)
                        2002 Z28 A4
                        SLP Lid | TSP Rumbler | P&P Throttle Body | No Cats | 3.42s | M/T Drag Radials | No Front Sway Bar

                        12.76 @ 108.42 w/ 1.90 60’

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                        • #13
                          Originally posted by 98Camaro3.8:
                          HPP3 doesn't have too many fans here. It's pretty much worthless. Look into getting a mail order tune from Texas Speed. You'll be much happier with that.
                          ^Do what he said

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                          • #14
                            how man miles on the 3.73 gears?

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