g6 6 speed manual trans (f40) on a 90 v6-how hard?

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  • no_doz
    • Sep 2005
    • 912

    #1

    g6 6 speed manual trans (f40) on a 90 v6-how hard?

    how hard would it be to swap a 6 speed manual trans onto a 1990 3.1 v6 in place of a 4 speed auto (besides the pedal/shifter install-i got that & im not concerned about it)? would it bolt up to the engine & would i need a complete ecm tune as well as a mini starter-trans mount-possibly motor mount, & etc?
  • black05gt
    Damn Yankee
    • Dec 2005
    • 74

    #2
    Wel, it's been done in a grand am, hth :
    ported 3500 heads, LIM, plenum, 28# TB FI's, TCE 65 mm TB, MPR CAI, F&R strut bars, F&R sway bars, Eibach springs, KYB GR2's, TOG headers, hi-flow cat, Borla muffler and tips, LC-1 WBO2, DHP PT

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    • Superdave
      Been there, Built that.
      • Sep 2004
      • 5850

      #3
      it would cost less than half that to put in a HM282 5 speed..
      Past Builds;
      1991 Z24, 3500/5 Spd. 275WHP/259WTQ 13.07@108 MPH
      1989 Camaro RS, ITB-3500/700R4. 263WHP/263WTQ 13.52@99.2 MPH
      Current Project;
      1972 Nova 12.73@105.7 MPH

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      • no_doz
        • Sep 2005
        • 912

        #4
        shouldnt cost NEAR that much-i can find these tranny's for 3-500-cv shafts shouldnt be more than 100 apiece-125 if i get a light flywheel-the only big things that i need are possibly an ecm tune-a trans mount shifter-cables-& other small stuff.

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        • gpchris
          • Feb 2007
          • 477

          #5
          Would cost more but its a case of "you get what you pay for". If your really interested in doing this PM me and I can help you out because Im 95% done with the swap.

          -GREEN 1995 Pontiac Grand Prix SE - L82/5spd MTX +
          -White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

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          • Nick-G
            11's or Bust...
            • Feb 2008
            • 224

            #6
            So does anyone here know much about this transmission? I have been considering using it myself but I would like to know how much power they really can handle with a good clutch.
            sigpic
            ----------
            BUILT Turbo 3400/4t65e-HD powered Grand AM in the making.

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            • gpchris
              • Feb 2007
              • 477

              #7
              Originally posted by Nick-G View Post
              So does anyone here know much about this transmission? I have been considering using it myself but I would like to know how much power they really can handle with a good clutch.
              Well think about the 282 is rated for like 150ftlbs of crank tq and yet they put them behind 500+hp v8s. The 6speed is rated for 300 ftlbs of torque. So it should be able to take quite a bit.

              -GREEN 1995 Pontiac Grand Prix SE - L82/5spd MTX +
              -White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

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              • no_doz
                • Sep 2005
                • 912

                #8
                why would it be rated for 300 ft/lbs when the 06 gto they put it on has 400 ft/lbs stock? it being rated for 100 ft/lbs less than a stock vehicle that it was installed in cant be right...

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                • gpchris
                  • Feb 2007
                  • 477

                  #9
                  Originally posted by no_doz View Post
                  why would it be rated for 300 ft/lbs when the 06 gto they put it on has 400 ft/lbs stock? it being rated for 100 ft/lbs less than a stock vehicle that it was installed in cant be right...
                  Wow, you shouldnt even be working on cars if you think the g6 and the gto share the same transmaxle.

                  -GREEN 1995 Pontiac Grand Prix SE - L82/5spd MTX +
                  -White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

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                  • no_doz
                    • Sep 2005
                    • 912

                    #10
                    i looked on intellichoice and the manufacturers code for both transmissions are the same, how am i supposed to know that they are different if the only info i find on them states that they arent...

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                    • Joseph Upson

                      #11
                      Originally posted by no_doz View Post
                      i looked on intellichoice and the manufacturers code for both transmissions are the same, how am i supposed to know that they are different if the only info i find on them states that they arent...
                      Rear wheel drive vs. front wheel drive cars involved. With a 3.1L I doubt you'll be in any serious danger of overpowering the transmission given the stock engines it sits behind in the Saab turbo cars and G6 plus the vehicle weight associated.

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                      • gpchris
                        • Feb 2007
                        • 477

                        #12
                        Originally posted by no_doz View Post
                        i looked on intellichoice and the manufacturers code for both transmissions are the same, how am i supposed to know that they are different if the only info i find on them states that they arent...
                        Thats weird but no the GTO uses the t56.

                        t56


                        f40

                        -GREEN 1995 Pontiac Grand Prix SE - L82/5spd MTX +
                        -White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

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                        • 92cavquest
                          • Feb 2008
                          • 150

                          #13
                          hehehe...the harness out of tim's car is in my car now. Let's just say some of the wiring was very "custom".

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