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limited slip

Discussion in '40- & 55-Series Tech' started by 79fj40, Dec 17, 2003.

  1. 79fj40

    79fj40

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    I have a 79 fj40 and was pulling a dumpster truck out of a field. I had always thought I had open diffs, but I dug 4 holes about the same size. Does this mean I have limited slip? if so how do you tell if you do. I have no idea what the po did to the truck but it was mostly stock when I got it. Thanks for the info. :beer:
     
  2. tres

    tres

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    the rear diff is open from the factory, to find out for sure ask previous owners/ open the diff. an open diff will spin all 4 tires if all 4 tires have the same ammoung of traction. that would be my guess
     
  3. woody

    woody unhelpful spotter Staff Member Admin

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    lift one axle entirely off the ground....spin one wheel...if the opposite side spins in the opposite direction, it's an open diff. If they spin the same directino/same speed, it's either an LS or a locker....if a locker, spin it fast then stop and the other side should continue to ratchet audibly.

    Very likely you just had equal traction at all 4 contact points.