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52" front springs

Discussion in 'The Garage' started by oll' bessy, Jan 11, 2007.

  1. oll' bessy

    oll' bessy Registered Member

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    i just did a 52" front spring swap on my '79 silverado 10 and have a
    question about how the write-up said to do it. in the write-up it says that
    the front uper shackle hanger has to be moved to corect shackle angle. i
    have not moved the shackle mount and my shackle angle looks to be about the same as in the pictures posted in the write-up. i am running shackles similar to ORD's and made a custom front hanger / body mount. i cant really understand why the shackle hanger needs to be moved. can someone clarify please?
     
  2. 79k20350

    79k20350 3/4 ton status

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    You need to post pics/ more info...

    Based on what you offeredup it could be a few things.

    1. Your mount is not far enough forward (the front one you made)
    2. You unknowingly used 56" springs
    3. Shackle is shorter (creates more angle)
     
  3. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    what he said... pics... goooood.

    j
     
  4. oll' bessy

    oll' bessy Registered Member

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    ok double checked, they are 52" springs. and measured the shackle, they are 7" eye to eye. also checked that the front hanger was moved forward enough and it was. 2-2.5 inches.[​IMG][​IMG]

    [​IMG]
     
  5. rcamacho

    rcamacho 1/2 ton status

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    If you're measuring spring eye to eye at rest than these could be 56" springs. The length is measured along the spring surface?
     
  6. RockinChevy

    RockinChevy 1/2 ton status GMOTM Winner

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    Yeah those have to be 56s.. if you measure them perfectly flat, you get 56s. If you measure when they're still arched, your measurement will come out to 52".... I don't see how the 52s will fit without relocating anything...
     
  7. oll' bessy

    oll' bessy Registered Member

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    i measured eye to eye and as the truck sits now the springs are almost totaly flat. i know they are 52" becasue they used to be under the back of my truck, and i know that i ordered 52" springs when i got them for the back. unless they shipped me 56", i am 99.999999% sure they are 52"s though. the custom front hangers moved the front spring bolt forward about 2 inches.
     
  8. Cajun4x4

    Cajun4x4 1/2 ton status

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    the reason your shackle angle is so good is because the way the article shows you to move teh front hanger should move the front point forward ~4"... so only moving the mount forward 2.5" will keep the axle in the stock location,etc...
     
  9. RockinChevy

    RockinChevy 1/2 ton status GMOTM Winner

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    That does make more sense. I forgot where the stock location is in relation to the one in the pic.
     
  10. oll' bessy

    oll' bessy Registered Member

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    gold star for cajun4X4 :bow: . that does make sence, did not even think of that, the way in the writeup moves it farther forward. i was wanting to keep the axle in the stock location so i only moved it the difference of the springs, ~2 inches. and now i feel like an idiot :doah:
     
  11. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    that was the 1st thing I noticed when I looked at the pics you posted... the springs front eye is a loong way from the end of the frame. On my set up (as seen in the write up!) the spring hanger is about as far forward as a stock un-modified frame will allow...

    j
     

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