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.

12 bolt

Discussion in 'The Garage' started by sunnyc123abc, Jan 18, 2006.

  1. sunnyc123abc

    sunnyc123abc 1/2 ton status

    Joined:
    Mar 12, 2005
    Posts:
    636
    Likes Received:
    0
    Location:
    SoCal
    Well it looks like im am going to have to swap a 12 bolt in place of my 10 bolt, since a 14 ff is too pricey to swap in and time consuming for me right now. I was just wondering, what i would have to do to swap in a 12 bolt in place of my 10 bolt.
     
  2. pauly383

    pauly383 Daddy383 Staff Member Moderator

    Joined:
    Jul 22, 2001
    Posts:
    16,217
    Likes Received:
    1
    Location:
    Mesa , Arizona USA
    Change the u-joint , thats it .

    And if you undo your backing plates , and carefully lift off the brake assemblies , and tie them up over the axle , you could reuse your existing brakes and drums etc .

    I have a 12 bolt in mine , with my original 10 bolt brakes and lines . We just dropped the axle away from the truck brakeless :thumb:

    Forgot the u-joint number , just have to look in the ck5 part # post again !
     
  3. pauly383

    pauly383 Daddy383 Staff Member Moderator

    Joined:
    Jul 22, 2001
    Posts:
    16,217
    Likes Received:
    1
    Location:
    Mesa , Arizona USA
    BTW , you can use the 12 bolt brakes if you wish , the lines will mate to your truck .

    But beware that early 12 bolts had skinnier brake drums and shoes . Don't want those with a fullsize .

    If you can only find a 5 lugger , the 6 lug shafts will fit no problem .

    4 speed trucks had a 1350 yoke and is a great find .

    And carry some shafts , you may not break , but be ready if you do .

    I bang on mine with a locker to work , to trails , on trails , and on long trips :D
     
  4. mtnman210

    mtnman210 1/2 ton status

    Joined:
    May 30, 2003
    Posts:
    3,880
    Likes Received:
    0
    Location:
    Northridge, Ca
    he doesn't have much left of his brakes....look for the gorman thread in the pacific forum.

    sunny get a hold of me. I'll go pull the cover on the 12bolt I have today. and see if it's any good. What gears are you running?
     
  5. badfish4tail

    badfish4tail 1/2 ton status

    Joined:
    Mar 1, 2005
    Posts:
    1,684
    Likes Received:
    1
    Location:
    Long Beach
    Glad to see your gonna put the rear end in soon.
     
  6. sunnyc123abc

    sunnyc123abc 1/2 ton status

    Joined:
    Mar 12, 2005
    Posts:
    636
    Likes Received:
    0
    Location:
    SoCal
    Yea, Im trying to get the axle in this weekend. I need truck to drive to work. As for the ratio, i have no idea. But when i spin the front drive shaft 4 times, the wheels spin once. And Devin, my dad already bought a 12 bolt without me knowing:doah: . We are going to check it out this weekend. hopefully he didnt buy it yet. If I don't end up buying the one my dad found, I will probably be buying yours:D .
     
  7. mtnman210

    mtnman210 1/2 ton status

    Joined:
    May 30, 2003
    Posts:
    3,880
    Likes Received:
    0
    Location:
    Northridge, Ca
    no problem...either pm or get me on AIM and I'll give you the price on it. I checked today and it's got 3.73 gears with a limited slip in it. I have pictures in another thread.

    http://coloradok5.com/forums/showthread.php?t=162011

    your gear ratios should be stamped on the ring gear---if there's anything left:D. So where are our pictures of the carnage?
     
  8. sunnyc123abc

    sunnyc123abc 1/2 ton status

    Joined:
    Mar 12, 2005
    Posts:
    636
    Likes Received:
    0
    Location:
    SoCal
    iv been trying to get under there and open the cover, but i haven't had time, cause work. i will probably get the cover off this weekend
     
  9. Esteban86K5

    Esteban86K5 1/2 ton status

    Joined:
    Feb 17, 2000
    Posts:
    3,712
    Likes Received:
    0
    Location:
    Bakersfield, CA
    Was it exactly 4 times? It should be more or less. 3:73 vs. 4:10.

    Make a mark on your pinion and the housing and then on the ground and tire. Then rotate and count. Or you can just take the rear cover off since you already have to do that.
     
  10. rick88blaze

    rick88blaze 1/2 ton status

    Joined:
    Jan 24, 2003
    Posts:
    2,342
    Likes Received:
    1
    Location:
    Knob Noster, Mo.
    The conversion u-joint I use is #372 at O'Reilly's. I don't remember the brand right now, but it's a lifetime warranty. It was their name brand joint. It cost me about $25 maybe a little less. :thumb:

    Rick
     
  11. sunnyc123abc

    sunnyc123abc 1/2 ton status

    Joined:
    Mar 12, 2005
    Posts:
    636
    Likes Received:
    0
    Location:
    SoCal
    Ok, so to my understanding i can either get a conversion u joint, or switch the 10 bolt yoke witht the 12 bolt yoke and get a new seal. Which way is better?
     
  12. pauly383

    pauly383 Daddy383 Staff Member Moderator

    Joined:
    Jul 22, 2001
    Posts:
    16,217
    Likes Received:
    1
    Location:
    Mesa , Arizona USA
    I'd get the conversion joint , less hassle that way .

    I have swapped yokes before , and have had them work well , from a 12 bolt to a 12 bolt , but haven't swapped yokes from 10 to 12 before .
     
  13. sunnyc123abc

    sunnyc123abc 1/2 ton status

    Joined:
    Mar 12, 2005
    Posts:
    636
    Likes Received:
    0
    Location:
    SoCal
    Do you know the part number for the coversion u-joints? iv tried searching but can't come up with anything for my local parts stores, napa, autozone, kragen, pepboys, paw. thanks
     
  14. boggerless

    boggerless 1 ton status Premium Member

    Joined:
    May 26, 2003
    Posts:
    22,728
    Likes Received:
    96
    Location:
    dearborn heights, Michigan
    PM MIKE (supreme70). he just did this swap.
     
  15. pauly383

    pauly383 Daddy383 Staff Member Moderator

    Joined:
    Jul 22, 2001
    Posts:
    16,217
    Likes Received:
    1
    Location:
    Mesa , Arizona USA

    The part number post has been visible from the forum index , and ttt twice this last 3 days :D

    1310 (12 bolt) to S44 (10 bolt) 3-3130
     
  16. southernspeed

    southernspeed 1/2 ton status GMOTM Winner

    Joined:
    Dec 24, 2003
    Posts:
    4,395
    Likes Received:
    50
    Location:
    VA
    If you want to 'keep it in the family' call Jess at High Angle Driveline. He just sent me a box of them!
     

Share This Page