Reassembly of rear end spring 65 - NCRS Discussion Boards

Reassembly of rear end spring 65

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  • Jimmy Roggenbuck

    Reassembly of rear end spring 65

    I am hoping to put my new rear end spring and components back on and on a post talked about the torqing of the differental bolts with the wheels on and weight on the spring? This is my first shot and do not want to have any problem any "TIPS" would be appreciated.
  • Eugene B.
    Very Frequent User
    • May 31, 1988
    • 710

    #2
    Re: Reassembly of rear end spring 65

    Jimmy,
    I'm no expert on spring installation, but I did read several postings on being careful when torquing the four bolts that secure the spring. It seems that if the bolts are tightened with the spring arched, it is possible to snap the ears off the differential housing. BAD THING!

    I suggest that you search the archives for this information before you proceed with the assembly or wait until others provide specific information.

    Good luck,
    Gene

    Comment

    • Stephen L.
      Extremely Frequent Poster
      • May 31, 1984
      • 3148

      #3
      Re: Reassembly of rear end spring 65

      The easiest way to complete this job is:

      1. Install the spring in the car and just "snug up" (do NOT torque them) the 4 bolts that attach the spring to the differential to hold things in place. DO NOT DRIVE THE CAR IN THIS CONDITION!!!!!

      2. When the car is completely assembled with body on the frame and most everything installed to obtain the "curb weight" the spring will be "flattened"
      to its final ride position. Place the car on blocks UNDER THE TIRES or on a DRIVE ON HOIST (again tires supporting the weight of the car) to gain access to the 4 bolts. At this point it is safe to torque the bolts to spec. This also applies to the front suspension and trailing arms if you had these pieces apart. In the case of the front suspension the rubber bushings are designed such that at final ride height the rubber parts are in a "neutral" (non-twisted) configuration. IF you tighten the rubber bushings with the suspension "hanging" they will be "twisted" when in the final curb height position and not perform as designed by GM....

      Comment

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