70 Roadrunner Drive Shaft Question

1968 -1970 Mopars

  1. RoadRunner1970

    RoadRunner1970 Well-Known Member

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    Is there any difference between a 4 speed and automatic as far as the drive shaft is concerned? Would a 4 speed and an automatic take the same length drive shaft?
     
  2. 727

    727 Well-Known Member

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    Not sure if there is any difference in diameter or strength from the factory but length was the same. I swapped from a 727 to a 833 and used the same drive shaft.

    If you have a two piece shaft with a rubber isolator you should change it out for either transmission.
     
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    • HEMI-ITIS

      HEMI-ITIS STREETER on LI FBBO Gold Member

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      I don't thing so,,,,but what do I know....................:rolleyes:
       
    • 68GTX4SPEED

      68GTX4SPEED Well-Known Member

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      If it is a 440-6 or a Hemi there will be a difference, because of the Dana 60, that driveshaft needs to be 1.14" shorter.
       
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      • Photon440

        Photon440 FBBO Gold Member FBBO Gold Member

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        I used the same shaft with both a 727 and a four speed in my '70.
         
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        • slepr1

          slepr1 Well-Known Member

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          Same length in my 71 Cuda
           
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