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.

14 bolt, 10 bolt ???????????????????

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Goodolboy, Mar 15, 2003.

  1. Goodolboy

    Goodolboy Registered Member

    Joined:
    Mar 13, 2003
    Posts:
    6
    Likes Received:
    0
    Location:
    Utah
    I not familiar with the terminology, whats a 10 bolt, 14 bolt, etc? I ran a search but could not find an answer.
     
  2. 84_Chevy_K10

    84_Chevy_K10 Banned

    Joined:
    May 30, 2001
    Posts:
    17,669
    Likes Received:
    0
    Location:
    IL, USA
    It's how GM identifies their axles. They refer to the number of bolts holding the cover down.
     
  3. R72K5

    R72K5 Banned

    Joined:
    Mar 5, 2001
    Posts:
    8,905
    Likes Received:
    0
    Location:
    central IL
    amd to make it even funner there are three versions of 10 bolt GM axles but only the largest(8.5") is used under trucks front and rear both, and dana axles are also 10 bolt cover but are not called 10 bolt,
    14 bolt are gm axles and there are two versions of these, the semi floater and the full floater, two totally different axles
     
  4. MountainMan

    MountainMan Registered Member

    Joined:
    Oct 9, 2000
    Posts:
    89
    Likes Received:
    0
    Location:
    Highlands Ranch, Colorado
    10 bolt is half ton
    12 is 3/4 ton
    14 is one ton
     
  5. R72K5

    R72K5 Banned

    Joined:
    Mar 5, 2001
    Posts:
    8,905
    Likes Received:
    0
    Location:
    central IL
    [ QUOTE ]
    10 bolt is half ton
    12 is 3/4 ton
    14 is one ton

    [/ QUOTE ]

    12 is 3/4 ton, huh ?hows that ? I hope you made a typo there

    10 and 12 bolts are only 1/2 ton
    all 12 bolts were 8.875" ring and 10 in trucks and all wagons and heavier cars like 9C1's and other higher GVW cars are 8.5" ring

    good luck
     
  6. Blazinaire

    Blazinaire 1/2 ton status

    Joined:
    Mar 17, 2002
    Posts:
    1,262
    Likes Received:
    0
    Location:
    Santa Maria, CA
    10 (8.5'') and 12 bolts (8.875'') are both half ton axles. 14sf (9.5'') is heavy half ton (6lug)or 3/4 ton (8lug). 14ff (10.5'') is heavy 3/4 ton or 1 ton. All of the "bolt" designations are strictly derived from the number of bolts that hold the cover on. Some people like to think that it comes from the number of bolts that hold the ring gear on but that method does not hold true for the 14bolt which uses 12 bolts to hold the ring gear on.
     
  7. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

    Joined:
    Jan 27, 2003
    Posts:
    3,254
    Likes Received:
    0
    Location:
    Castro Valley, CA
    Now theres 3 versons of the 14 bolt, sf (9.5"), ff (10.5") and the 11.5" ff in new HD trucks.
     
  8. R72K5

    R72K5 Banned

    Joined:
    Mar 5, 2001
    Posts:
    8,905
    Likes Received:
    0
    Location:
    central IL
    [ QUOTE ]
    Now theres 3 versons of the 14 bolt, sf (9.5"), ff (10.5") and the 11.5" ff in new HD trucks.

    [/ QUOTE ]

    did not know about the 11.5",
    cool
     
  9. scrappyk5

    scrappyk5 1/2 ton status

    Joined:
    Mar 17, 2002
    Posts:
    2,099
    Likes Received:
    0
    Location:
    virginia
    my question , if there is a pile of axles at the junkyard
    i look and see a couple axles that are 14bff. they are 8
    lug. so how do i tell the differance between 3/4 ton
    and 1 ton. ?
     
  10. Erich_in_AZ

    Erich_in_AZ 1/2 ton status

    Joined:
    Mar 23, 2002
    Posts:
    237
    Likes Received:
    0
    Location:
    Tucson (it\'s a Dry heat), AZ
    1 Ton axles axles will have spring perches moved in so they are 2" narrower than the 3/4 tons, and the shocks are in a different location also. Easiest way is to measure the distance between your springs and match that. You can also get new spring perches to weld on for about 15-20 bucks. You just remove the old ones and zap on the new.
     

Share This Page