rearend question.......

Transmission and Drivetrain Tech

  1. 70-duster

    70-duster Well-Known Member

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    I am sitting here at work pondering about my 7 1/4 rearend in my 71 Duster, and realized that it may be no good. I had the rearend jacked up yesterday and was able to spin the rear wheels, while the car was in park. The rearend is an open rearend. Is that wrong or am I missing something? I didn't think that I should be able to spin the rear wheels when it is in park. I tried to spin the driveshaft by hand and it would not spin. Am I losing my mind or do i need a new rearend?
     
  2. RedFish

    RedFish Well-Known Member

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    One wheel was turning opposite direction from the other. That's how they work. It wouldn't roll away in park. If the drive shaft had turned there would be a transmission problem.
     
  3. 65Vart

    65Vart Well-Known Member

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    The rear wheels will move if the car is in the air in park.
     
  4. 70-duster

    70-duster Well-Known Member

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    Thanks guys, i was just making sure I wasn't crazy. I am use to posi rearends.
     
  5. RustyRatRod

    RustyRatRod Weenie idiot loser. FABO Gold Member

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    For your viewing pleasure:

    [ame="http://www.youtube.com/watch?v=oTUjaoJAdCQ"]YouTube - Automobile Differential Mechanism Explained in a simple way[/ame]
     
  6. 72ScampTramp

    72ScampTramp Scamp Tramp

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    If the car was in park. You shouldnt be able to move the rear wheels or the drive shaft. If these cars operate the same as the newer ones its a linkage that comes out in the tail of the tranny and catches the park pawl correct?
     
  7. plymouthscampi

    plymouthscampi Member

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    WOW! Great video. Thanks for posting.
     
  8. daredevil

    daredevil Well-Known Member

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    no the spiders will roll alowing the wheels to turn if its in the air. if ones on the ground the other wont spin
     
  9. 70-duster

    70-duster Well-Known Member

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    Thanks, that was a great educational video.
     
  10. 67valiant 100

    67valiant 100 go fast or go home

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    That video was great! Now I know what all the other gears are for:book:
     
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