Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

diameter of 14 bolt FF u bolts ?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by R72K5, Nov 30, 2002.

  1. R72K5

    R72K5 Banned

    Joined:
    Mar 5, 2001
    Posts:
    8,905
    Likes Received:
    0
    Location:
    central IL
    what diameter rod are 14 bolt FF U bolts made of ? anyone know for sure ??


    thanks for anything
     
  2. zakk

    zakk 1/2 ton status

    Joined:
    Sep 21, 2001
    Posts:
    4,762
    Likes Received:
    0
    Location:
    San Jose CA
  3. R72K5

    R72K5 Banned

    Joined:
    Mar 5, 2001
    Posts:
    8,905
    Likes Received:
    0
    Location:
    central IL
    not having any luck, yes i do search for stuff on this forum, the best as i can tell these bolts are made of 5/8" rod and are 4" centers


    that sound right ?
     
  4. zakk

    zakk 1/2 ton status

    Joined:
    Sep 21, 2001
    Posts:
    4,762
    Likes Received:
    0
    Location:
    San Jose CA
    5/8 stock, 3 3/8 ID, 8 inches and longer depenfing on your rear suspension.
     
  5. R72K5

    R72K5 Banned

    Joined:
    Mar 5, 2001
    Posts:
    8,905
    Likes Received:
    0
    Location:
    central IL
    did some measuring of the u bolt plates off the 74 3/4 ton and 5/8 rod would be extremely tight fit in the bolt holes of the plates and i measured the diameter of the bolts on the '81 1 ton dually cube(large) van out here and its got 9/16" bolts pointing down style setup, its a 10,000lb GVW truck, so hmm... i think ill just go with 9/16 so that i know ill have no trouble with fitting bolts through the plate holes, if 9/16" is enough for a big huge 1 ton dually van then i would think its overkill for a 3/4 ton pickup

    thanks!
     
  6. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Joined:
    Jul 23, 2000
    Posts:
    36,175
    Likes Received:
    1,385
    Location:
    E-town baby!
    If you see a big cube van on the rocks let me know...I want pic's!!

    The 5/8" stock goes through the plates just fine.

    Rene
     
  7. R72K5

    R72K5 Banned

    Joined:
    Mar 5, 2001
    Posts:
    8,905
    Likes Received:
    0
    Location:
    central IL
    hehe, i know but wierd how a 1 ton uses 9/16" and why 3/4 ton would use 5/8" hmm..


    thanks
     
  8. PetaKane

    PetaKane 1/2 ton status

    Joined:
    Apr 17, 2002
    Posts:
    530
    Likes Received:
    0
    Location:
    Oklahoma City OK
    Mine came out of a 1-ton and it uses 5/8". I did have a little problem getting them in and out of the top plate though, that was kinda annoying.
     
  9. imiceman44

    imiceman44 1 ton status

    Joined:
    Aug 5, 2002
    Posts:
    15,160
    Likes Received:
    1
    Location:
    Sacramento, CA
    It is supposed to be tight, if you get the bolt at an angle you will never get it in, so Yes I say go with 5/8".
     
  10. R72K5

    R72K5 Banned

    Joined:
    Mar 5, 2001
    Posts:
    8,905
    Likes Received:
    0
    Location:
    central IL
    but technically the diameter of the rod they ar emade of wont affect or change angle of the legs of the bolt, but instead the width of the U bolt would affect the angle of the legs and location of the ends of them in comparison to the location of the holes in the plates. how some ppl have 3 3/8" plates and bolts and some have 3 1/2" plates and bolts ill never know, but ive got 3 3/8" on the 74 3/4 ton and same on the '81 G30 dually van out here and the van is 9/16" bolts anyways with its 10,000 GVW,

    thanks for any further info on this, would be glad to hear it!
     

Share This Page