Announcement

Collapse
No announcement yet.

What was available for 55 differentials?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • What was available for 55 differentials?

    FastFritz(Frank) has me thinking about options for speeding up my 55 times. I'm running a Dana 44 with 331 gears and I'll be swapping out the DG200 automatic for a DG250. Were 371 gears available in 55? When did the TT become available? I should be asking Dwain, I guess, or Phil Harris. I don't want to go too tall unless I plan to trailer it. I don't want to crank the valve train down too much...unless I trailer it. May be I should get a trailer (lol).
    Dave Warren (Perry Mason by day, Perry Como by night)

  • #2
    Twin Traction was available on 56 trucks, and graduated to cars by 57. Not available in 55. Packard was the first car manufacturer to offer it in 56. What rear ratio are you using now? 3.54 should be a good all around ratio. If just around town a 3.92 would be really fun, but would limit any use on the highway to short trips. I don't know when the 3.73 was first offered.
    Bez Auto Alchemy
    573-318-8948
    http://bezautoalchemy.com


    "Don't believe every internet quote" Abe Lincoln

    Comment


    • #3
      I'm still using the factory 3.31. 3.73 would give me a better hole shot if it was legal (available in 55). Thanks for the TT info.
      Dave Warren (Perry Mason by day, Perry Como by night)

      Comment


      • #4
        IIRC, a 3.54:1 would be the standard/default ratio for a V8 with the DG AT. I would go with that ratio for all around use.
        I assume that you mean a DG250M.
        As stated, there was no TT in cars until 1957. Would it still be acceptable for the drags that you want to enter? If so, I believe that it would be a big help.
        Gary L.
        Wappinger, NY

        SDC member since 1968
        Studebaker enthusiast much longer

        Comment


        • #5
          Cool. 3.54 would still be drivable. Anybody coming to South Bend with a set of gears? Car has three feet of snow on the 17 layer car cover, but I'm starting to warm up .
          Dave Warren (Perry Mason by day, Perry Como by night)

          Comment


          • #6
            I had an all origional 55 President Hard Top with AT and it was the 3:54 rear,and it went along nicely on the highways
            Originally posted by studegary View Post
            IIRC, a 3.54:1 would be the standard/default ratio for a V8 with the DG AT. I would go with that ratio for all around use.
            I assume that you mean a DG250M.
            As stated, there was no TT in cars until 1957. Would it still be acceptable for the drags that you want to enter? If so, I believe that it would be a big help.
            Joseph R. Zeiger

            Comment


            • #7
              Dave

              I'd ask the PSMCD folks about TT. They try to keep the muscle car spirit of competition and TT would be available to most other entrants, so they may allow it. I know rear end ratios can be any ratio.

              Bob

              Comment


              • #8
                I can also confirm that the '55's were available with open rear Dana 44 3.73's, as I have one in the back of my '55 Commander hardtop! This vehicle was originally a 259/3 speed with OD. As an interesting sidenote, the rear end also has a drain plug underneath, so changing fluid is alot less of a hassle!
                1964 Studebaker Commander R2 clone
                1963 Studebaker Daytona Hardtop with no engine or transmission
                1950 Studebaker 2R5 w/170 six cylinder and 3spd OD
                1955 Studebaker Commander Hardtop w/289 and 3spd OD and Megasquirt port fuel injection(among other things)

                Comment


                • #9
                  Originally posted by 63t-cab View Post
                  I had an all origional 55 President Hard Top with AT and it was the 3:54 rear,and it went along nicely on the highways
                  I second that....A '55 Commander or President equipped with automatic transmission came standard with a 3.54 rear end gear ratio...a nice all around ratio.. I do not believe a 3.73 ratio was offered as an optional ratio in '55.

                  Comment


                  • #10
                    Originally posted by PlainBrownR2 View Post
                    I can also confirm that the '55's were available with open rear Dana 44 3.73's, as I have one in the back of my '55 Commander hardtop! This vehicle was originally a 259/3 speed with OD. As an interesting sidenote, the rear end also has a drain plug underneath, so changing fluid is alot less of a hassle!
                    The rear end was most likely replaced at some point in Your car's life, as the standard factory ratio for a '55 V8 with O/D would be 4.27. I don't believe the 3.73 ratio You mention here was even offered for the '55 V8's!

                    Comment


                    • #11
                      No. We have known about this vehicle since it was purchased new. It was never replaced. It is also listed in the '55 Chassis catalog(which between that, and the interpretation of the dealer's literature, I use VERY loosely), where if you had a 16G8, with a 259 regular STD, or STD w/OD, was available with a 3.92, 3.73, or 3.54. I also forgot, the 3.73 rear axle assembly is listed as part number 537550.
                      1964 Studebaker Commander R2 clone
                      1963 Studebaker Daytona Hardtop with no engine or transmission
                      1950 Studebaker 2R5 w/170 six cylinder and 3spd OD
                      1955 Studebaker Commander Hardtop w/289 and 3spd OD and Megasquirt port fuel injection(among other things)

                      Comment


                      • #12
                        Originally posted by PlainBrownR2 View Post
                        No. We have known about this vehicle since it was purchased new. It was never replaced. It is also listed in the '55 Chassis catalog(which between that, and the interpretation of the dealer's literature, I use VERY loosely), where if you had a 16G8, with a 259 regular STD, or STD w/OD, was available with a 3.92, 3.73, or 3.54. I also forgot, the 3.73 rear axle assembly is listed as part number 537550.
                        Okay Plain Brown.....I stand corrected!

                        Comment


                        • #13
                          I was guessing wrong in My head too,always thought the 3:73 was introduced around 1960
                          Originally posted by SN-60 View Post
                          Okay Plain Brown.....I stand corrected!
                          Joseph R. Zeiger

                          Comment


                          • #14
                            Well, long as we're on the subject of the 3.73, the truck Chassis catalog lists them for the 1955 E7's too. If you look through the Chassis catalogs from those years, you had a wide range of options when it came to rear ends, and what was ordered with the vehicle might have been needed for the environment that it was going to be driving in. If you were say, living in the Ozarks, you didn't want a weenie little 3.73, it was too high. Instead, you might order a 4.56, because the terrain was so hilly!
                            1964 Studebaker Commander R2 clone
                            1963 Studebaker Daytona Hardtop with no engine or transmission
                            1950 Studebaker 2R5 w/170 six cylinder and 3spd OD
                            1955 Studebaker Commander Hardtop w/289 and 3spd OD and Megasquirt port fuel injection(among other things)

                            Comment


                            • #15
                              The 3.92 was the best ratio offered with OD.
                              Bez Auto Alchemy
                              573-318-8948
                              http://bezautoalchemy.com


                              "Don't believe every internet quote" Abe Lincoln

                              Comment

                              Working...
                              X