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Rear Axle questions 700

posted by  Bavman25 on  Thu Jan 20 19:58 CST 2011
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last visit: Tue Feb 8 19:18 CST 2011
[RELATED]

Hello

What is the ratio for the turbo diesel?

Is the 240 series axle interchangeable into a 740?? I have a 90 5 speed 240 and I want a better ratio (3.31) for my 740 auto....

Thanks

Al Taylor








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    Rear Axle questions 700

    posted by  fltrplntman on  Sat Jan 29 10:14 CST 2011
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    last visit: Wed Apr 13 18:46 CST 2011
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    Rev. Al!!

    What a small world.. As usual.

    What do you want me to do with this tail light?
    Sell it and Pay pal the money to you??

    I'll need some more parts...maybe.
    The 740 quit on me coming home from work last night. I'm at the cost/value line i always draw. so i don't know how far I'll go to fix this.








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    Rear Axle questions 700

    posted by  Bavman25 on  Fri Jan 21 13:37 CST 2011
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    last visit: Tue Feb 8 19:18 CST 2011
    [RELATED]

    Hello John

    Thanks for the info!, I have a 1991 740 Automatic, looking to save some rev's on the highway as I drive this car 30k a year...


    Thanks

    Al Taylor








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      Rear Axle questions 700

      uid 55's pic
      posted by  john sargent on  Sun Jan 23 22:22 CST 2011
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      last visit: Wed Oct 22 09:07 CST 2014
      [RELATED]

      Sedan, or wagon? They have different gearing.
      --
      john








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        Rear Axle questions 700

        posted by  Bavman25 on  Mon Jan 24 14:33 CST 2011
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        last visit: Tue Feb 8 19:18 CST 2011
        [RELATED]

        wagon








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          Rear Axle questions 700

          uid 55's pic
          posted by  john sargent on  Mon Jan 24 17:01 CST 2011
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          last visit: Wed Oct 22 09:07 CST 2014
          [RELATED]

          Should have 4.10:1. It will be an Eaton locker. 1991 and earlier NA 740s did not have the Eaton locker, which I expect you'll want to keep.

          Turbo automatic 740/940 had 3.73. 740Ts (scarce) with manual transmission had 3.54:1 ratio, and 1992-94 960 wagons had 3.31:1 ratio. M47 equipped NA 740s (scarce) also had the 3.31:1 ratio, while the 3.91: ratio came in earlier 744s (not the 745) with ZF or AW70.

          If you change rear ends, you'll have to make sure the tone ring count (drives the electronic speedometer) stays the same.
          --
          john








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            Rear Axle questions 700

            posted by  Bavman25 on  Mon Jan 24 19:58 CST 2011
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            last visit: Tue Feb 8 19:18 CST 2011
            [RELATED]

            Hello John

            Thanks for the information, I have a 745T auto wagon parts car, think I will switch to that axel. Being a 4.10 and LOUD it has to go. Not really concerned with the LS, would probably sell that unit, would you be interested? I guess 4.10 to 3.73 will help and will keep my eye out for a manual car in the yards...I used to drive a 745T with a 5 speed and it was great, sold it, bought it back and like an idiot sold it again.

            Thanks

            Al Taylor
            63 544 one family owned!
            70 P1800E
            Assorted 240 and 740 cars..








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              Rear Axle questions 700

              uid 55's pic
              posted by  john sargent on  Mon Jan 24 20:45 CST 2011
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              last visit: Wed Oct 22 09:07 CST 2014
              [RELATED]

              What year 745T? It makes a difference.

              Your car has a locker, not a limited slip.

              Our three 944Ts have lockers, and my earlier 745T has a Detroit TruTrac.
              --
              john








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                Rear Axle questions 700

                posted by  Bavman25 on  Fri Feb 4 13:58 CST 2011
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                last visit: Tue Feb 8 19:18 CST 2011
                [RELATED]

                Hello John

                just checked, my parts car is an 87 745 turbo, the car I am swapping into is a 7/90 production 745NA both cars are automatics. Just drove down to daytona for the 24 hour race, averaged around 24mpg...have 195/65/15's...

                Thanks

                Al Taylor








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                  Rear Axle questions 700

                  posted by  Bavman25 on  Tue Feb 8 19:20 CST 2011
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                  last visit: Tue Feb 8 19:18 CST 2011
                  [RELATED]

                  Just found a NA 85 744 5 spd and an 87 Turbo 5 spd in the local pick a part, anyone interested in the axels? They are located Durham nC.

                  Thanks

                  Al Taylor







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