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Anyone running a 700R4 GM Trans?

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  • #16
    Originally posted by studegary View Post
    From this post, I do not see what the vehicle is (weight/aerodynamics) or what the engine is (HP, displacement, torque). These things would have to be known to give a good answer to you.
    Building a 47 M5, using a 65 283 SB McKinnon. Looks like Ray Martin's post may be where I want to be. Thanks to everyone for the feedback. :-)
    Jim
    I was STUDEBAKER, when STUDEBAKER wasn't "KOOL".

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    • #17
      GM700 R4 transmission

      I have used a 700-R4 transmission behind a supercharged Stude 289 for about 80,000 miles.
      The rear gears have been an open Diff with 3.31:1 gears. When I had an 8 3/4 Chrysler diff installed, it contained 4.10:1 gearing. I found the first ratio too tall (too low a number) and the 4.10:1 ratio too short (too hig a number). For cruising and highway work I would install a 3.73:1, maybe even a 3.54:
      gear set.

      Chris Altenburg

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      • #18
        Jim Running a 3.90 9inch in my 55 4dr with a massaged 289 R1 .Performs decent and gets 22 plus on highway for a tank.

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        • #19
          Studebaker V8 is a long stroke high torque engine, the Hawk should have been able to
          handle a 3.07 gear set, the Avanti, with its extra weight and tired engine, I wouldnt go
          that low (numerically). It all depends on what engine you are running, what weight is
          the car, and tire size. There isnt a standard perfect number.

          Yes, computer management helps to control ping.

          Tom
          '63 Avanti R1, '03 Mustang Cobra 13" front disc/98 GT rear brakes, 03 Cobra 17" wheels, GM alt, 97 Z28 leather seats, TKO 5-spd, Ported heads w/SST full flow valves.
          Check out my disc brake adapters to install 1994-2004 Mustang disc brakes on your Studebaker!!
          http://forum.studebakerdriversclub.c...bracket-update
          I have also written many TECH how to articles, do a search for my Forum name to find them

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          • #20
            Studebaker V8 is a long stroke high torque engine,
            Pure SDC urban legend, not backed up by the specifications.
            FWIW, the SBF 289" with a 2.87" stroke and the SBC 283" with a 3" stroke develop essentially the same horsepower and torque as the Studebaker 289" with a 3.625" stroke.

            1965 Mustang 289" - 225hp @ 4,800 RPMs and 305 lbs/ft @ 3200 RPMs

            1957 Chevrolet 283" - 220hp @ 4800 RPMs and 300lbs/ft @ 3000 RPMs

            1964 Studebaker 289" - 225hp @ 4500 RPMs and 305lbs/ft @ 3000 RPMs

            jack vines
            Last edited by PackardV8; 03-14-2011, 04:21 AM.
            PackardV8

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            • #21
              Ha! Those 5 extra foot pounds at 200 less RPM make up the difference!

              Tom
              '63 Avanti R1, '03 Mustang Cobra 13" front disc/98 GT rear brakes, 03 Cobra 17" wheels, GM alt, 97 Z28 leather seats, TKO 5-spd, Ported heads w/SST full flow valves.
              Check out my disc brake adapters to install 1994-2004 Mustang disc brakes on your Studebaker!!
              http://forum.studebakerdriversclub.c...bracket-update
              I have also written many TECH how to articles, do a search for my Forum name to find them

              Comment


              • #22
                Hi Jim, I know this is an old post but after changing our tranny to a 700 R4 we just tries it on the highway with the same rear end and lucky enough it was real good , we run around 2000 R.P.M. at 73 MPH in solid lockup. when I put it in Solid Lockup I reduce the engine RPM by 350 RPM I use that type that even has solid lockup in 3rd. gear, so I have a variety of gears to play with plus it will disengage when I step on the brake.

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