Rear Stance Not Level

Discussion in 'Suspension, Steering, Brake & Wheel Topics' started by Rayden2009, Aug 9, 2020.

  1. Robert stuart Bell

    Robert stuart Bell Rsb78LT

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    Measure the height of the ends of both springs, make sure there sitting at the same height.
    Would be a pain but if it's the springs you could just swap them so the driver side sits higher
     
  2. Rayden2009

    Rayden2009 Veteran Member Gold Member

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    Its not the springs. I measured the height before and after I swapped them out and the difference between sides was the same with the new springs, albeit 2” lower.
     
  3. badazz81z28

    badazz81z28 Veteran Member

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    Based on what? The thing the OP can do is take some measurements. I would put the rear frame rails forward of the leaf spring pocket and see if the body is crooked. I’m betting it’s the leafs. These springs even coils are not exact.
     
  4. Rayden2009

    Rayden2009 Veteran Member Gold Member

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    Here are some more pics. Not sure how helpful they are. I think I do need to take measurements, but I don't know how. At least i’m not the only one with this issue.
    C88FCC30-F2DA-45D8-80A1-777929D3CC32.jpeg BC629108-C2A3-461A-A5ED-FD30B8F18DBC.jpeg 159A3989-6315-4209-A9CC-6B18374922E9.jpeg F9CEDA46-87F6-4B0F-9932-73C7B72C6399.jpeg 8EFC50C2-08E4-4076-A366-8EC3BB119B37.jpeg B2D3EB75-B8B8-47E0-9AAD-EEC7749D9736.jpeg
     
  5. COPO

    COPO Veteran Member Lifetime Gold Member

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    Based on your body weight sitting in the drivers seat. If it wasn’t, then all the cars would be driving on the road lop sided.
    But I agree something is not right about those leafs, for one thing it’s missing leafs. Rayden2009 only has 3.

    70 Z28’s came with 5 leafs. I believe 71-81 should as well.

    6DA9E819-3DB0-4065-BA68-115CC31D342F.jpeg 6765A22E-238A-4B78-821F-3C01E6F0DE66.jpeg 6B935692-C792-4DF9-A71B-8A485BB03E1E.jpeg 2F0F2908-A487-4BAC-A2F1-6DFCB40E6D47.jpeg C4041113-44B8-4CA2-8AFA-5D3C3FCB8FED.jpeg 879CB23B-0AD5-43C9-996F-4A80E0D2DE7E.jpeg
     
    Last edited: Aug 12, 2020
  6. roadrace2

    roadrace2 Veteran Member

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    Im not sure how level your garage floor is, but I would place a level on the car, make sure its on level ground first. Id also look into the front spring eye pockets as well. The drivers side or even passenger side may have been installed incorrectly and/or the pocket may have become lodged/loosened.

    Look at the rear shackles as well. Make sure one side is at the same level as the other. Maybe your frame rails are bent on one side?

    My 2 penny thought.
     
  7. badazz81z28

    badazz81z28 Veteran Member

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    Im intrigued if this is true, but Im just very skeptical to believe it because the springs are the same and it would require some engineering on component placement to get it right. Options like AC would screw it up. Based on where the person sits and what peoples weighed back in the 70s, I don't think your weight would have any effect on the ride height during that time. If it did, as soon as you has a passenger, that side would sit low. Now today when your average 5'7" person weighs 200+ pounds...I can see it dropping a little. However not enough to look at the car and say WTH....I do agree that the weight of the car isnt 50/50 or 25/25/25/25...the car won't sit exactly even with perfect rate springs. I have coil overs on my car and they are all set slightly different to get an even ride height.
     
  8. Bandit723

    Bandit723 Veteran Member

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    Went thru this as well. got mine to with in a 1/8 inch but did take a lot of fussing to get there. winning combo was new leaf springs, new rear shocks, evenly adjusted front sway bar and a lot of fine tuning of the front coil overs. Pass front adjustment is just a bit lower that the drivers side which raised the drivers rear.
     
  9. Fbird

    Fbird Veteran Member Lifetime Gold Member

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    If the 1/2" problem is THE same NOW as was BEFORE....move on. Either "shim" it or weigh it. The front end does as much to the rear as the rear does!!! 4 corner weight will tell you exactly WHO's at fault (which corner)
     
  10. Fbird

    Fbird Veteran Member Lifetime Gold Member

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    also GOOD point there COPO.....given you only have 3 leaf's....did you use a different leaf perch bushing set? Maybe the 3 pcs are thick enough to be squeezed in the perch but thats just wierd. Usual F-body stuff is 4 leaf or 5.
     

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