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Bolt sizes from the factory

Discussion in 'The Garage' started by cybrfire, Jan 18, 2004.

  1. cybrfire

    cybrfire 1 ton status Vendor GMOTM Winner

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    Tried a search but found millions of results
    Does anybody know the bolt sizes for

    Rear springs:
    Frame to shackle
    shackle to spring
    spring to bucket (front of rear spring)

    Front springs:
    frame to shackle
    shackle to spring
    spring eye to bucket (front of front spring)
     
  2. R72K5

    R72K5 Banned

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    needin diameter of the bolts right ? i can look on my 83 and try to find out the sizes if you need ?
    whatever size bolts fit through the holes the best would be what size they are, what you trying to do exactly ?
     
  3. cybrfire

    cybrfire 1 ton status Vendor GMOTM Winner

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    diameter and length. I have a lift to install. Have new springs used shackles that are powder coated and would like to put the shackles on the springs and just cut the old bolts rather than try to undo them. They are so rusted their isn't much left to measure. I don't think I could budge them anyways. This way I can have the springs on the axles with shackles ready to go in.
     
  4. 84_Chevy_K10

    84_Chevy_K10 Banned

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    All lengths are a guess, I really can't remember


    Rear springs:
    Frame to shackle 9/16-18
    shackle to spring 9/16-18
    spring to bucket (front of rear spring) 9/16-18

    Front springs:
    frame to shackle 7/16" diameter, unless 88 or newer or ORD upgrade, then 1/2"
    shackle to spring stock is 7/16" for rigs earlier than 88 or so, then 1/2" after that. The ORD upgrade is to a 1/2" bolt
    spring eye to bucket (front of front spring) 9/16-18

    I think they're all about 4.5" long. The front part of the front springs might be 5", as might be some of the rears. Hopefully someone else here can tell you for sure. It's been almost two years for me so I've forgotten.
     

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