What could cause the rear to sit lower on one side?

Discussion in 'Suspension, Steering, Brake & Wheel Topics' started by JWZ28, Jan 29, 2016.

  1. JWZ28

    JWZ28 Veteran Member

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    The driver side rear of my 78 sits a good bit lower than the passenger side. What could cause this?

    Rear suspension:
    Summit lowering springs
    Poly spring pads
    Addco anti-sway bar
    Moog shocks
     
  2. CorkyE

    CorkyE Veteran Member Lifetime Gold Member

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    Sagging springs.
     
  3. JWZ28

    JWZ28 Veteran Member

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    I installed the springs about six yrs ago new from Summit, but they are a cheap spring. I guess it's time to order hotchkis, or is there another good brand that won't hurt the wallet too bad?

    Also, where can I get the correct spring bushings for the rear eyelet? The all the ones I've tried were incorrect.
     
  4. warped

    warped Veteran Member Lifetime Gold Member

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    Did you torque the suspension with the car in the air? You should have it sitting level on the ground and bounce it around a few times before tightening all the fasteners. Also, the poly spring pads have been known to slip out of place if the car is driven haard on occasion. I got my springs from a local shop and no issues. the rear eye bushings came from Keith at Custom Works. Good luck.
     
  5. JWZ28

    JWZ28 Veteran Member

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    The car was on the ground before i tightened the suspension. I did tighten the front bolts on the leaf springs before dropping it. I cant reach them once on the ground. Ive checked spring pads and they seem to be in place.
     
  6. Brown`77Z28

    Brown`77Z28 Veteran Member Lifetime Gold Member

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    It could be the body itself, I had the same problem with my '77
    I even swapped my springs from left to right and back but it didn't helped a bit.
    After that I started measuring the body and it turned out that my RH quarter panel sits a good 1" lower on the body.
    It turns out there was a large margin when they assembled our cars.
     
  7. BonzoHansen

    BonzoHansen Administrator Lifetime Gold Member

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    ^^^yes

    is the front off too?
     
  8. JWZ28

    JWZ28 Veteran Member

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    No the front is fine. I considered this as a possibility, they didn't mind the gaps and what not on these things even from the factory. So if it is the body, are there any options?
     
  9. falloutboy

    falloutboy Veteran Member

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    are the values D and Z the same for left and right?
    And what are the values?
    [​IMG]

    A broken leaf may also cause a saggy side
     
  10. JWZ28

    JWZ28 Veteran Member

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    I've checked the leafs and nothing appears broken. I'll try to measure today when it warms up, but the car is lowered so the values may not reflect what the diagram shows.
     

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