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.

Axel Swap questions.. and information needed

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by BozoWise, Apr 1, 2002.

  1. BozoWise

    BozoWise 1/2 ton status

    Joined:
    Mar 28, 2002
    Posts:
    1,224
    Likes Received:
    0
    Location:
    Lubbock, TX
    I have been reading around the site and need some info.

    I own a 1979 K5 blazer with the 203 fulltime transfer case automatic trans and a 400SB. The rear axel is a GM 12 bolt and the front a Gm 10 (I think) Anyways I know these aren't premo for axels and I also want to change the gears out since they are 3:73 (w/ limited slip) and I want to run 42. So my question is should I just change ou the entire axels to something like Dana 60. What vehicle would be used for a doner axel? (both front and rear)

    Any information on the idea of an axel swap or anything pretaining to it would be appreciated.
     
  2. 74k5inVA

    74k5inVA 1/2 ton status

    Joined:
    Dec 13, 2001
    Posts:
    329
    Likes Received:
    0
    Location:
    Virginia Beach, VA
    well, everyone here is going to tell you to run 1 ton axles especially if you are going to 42's i was going to tell you that you could keep the axles you have if you are only going to do moderate wheeling and stay around 35-38's for tires. but if you have a heavy foot or like to jump or want to ever crawl on the rocks or romp through a huge mud pit then you are going to want one ton axles, best bet 14 bolt-ff in the rear and dana 60 up front. if you plan on putting lockers in then get ones with open carriers, there is a chart somewhere around here that will tell you what gears to run but i am thinking close to 5.12 is what i have heard. i will be running 4.56 with my 35's. that's about all the help i can give.
     
  3. BozoWise

    BozoWise 1/2 ton status

    Joined:
    Mar 28, 2002
    Posts:
    1,224
    Likes Received:
    0
    Location:
    Lubbock, TX
    Would a one ton chevy truck have the right doner axels? And would they bolt in with only minor mods to things such as break lines and u-bolts?
     
  4. zakk

    zakk 1/2 ton status

    Joined:
    Sep 21, 2001
    Posts:
    4,762
    Likes Received:
    0
    Location:
    San Jose CA
    a K30 would have the axels you are looking for.
     
  5. ChadH82

    ChadH82 1/2 ton status

    Joined:
    May 9, 2001
    Posts:
    400
    Likes Received:
    0
    Location:
    Stillwater, Oklahoma
    Don't you have to move the spring perches on the 14 bolt if it came out of a 1 ton? I think the 3/4 tons have the same width 14 bolts.
     
  6. smartpatrol

    smartpatrol Registered Member

    Joined:
    Feb 6, 2002
    Posts:
    86
    Likes Received:
    0
    Location:
    Ault CO
    I got my dana 60 front from a dodge deisel from a junkyard $1000. I found a Dana 70HD FF rear at the local junk yard $125. Just by looking around the junkyard i frequent, i saw lots of Dana 60's rears but not a single 14 bolt.
     
  7. Hossbaby50

    Hossbaby50 3/4 ton status

    Joined:
    Sep 1, 2001
    Posts:
    8,972
    Likes Received:
    0
    Location:
    Peoria, AZ
    In your search for a donor truck make sure it is a single rear wheel truck. You can make duallys work, but it is alot of hassle. Also, you will have to move the spring perches and possibly shock mounts on a 1 ton 14bff to make it fit a K5. You can get a 14bff from a 3/4 ton that will bolt into a K5, but usually the rear drum brakes are smaller on the 3/4 ton. But if you plan a disc brake conversion then I would stay on the lookout for a D60 and a 3/4 ton 14bff.
     
  8. chvyhs

    chvyhs 1/2 ton status

    Joined:
    Feb 12, 2001
    Posts:
    1,469
    Likes Received:
    0
    Location:
    Murrieta, California
  9. BozoWise

    BozoWise 1/2 ton status

    Joined:
    Mar 28, 2002
    Posts:
    1,224
    Likes Received:
    0
    Location:
    Lubbock, TX
    Thanks for all the info it looks like I will be searching for a 3/4 truck to steal some axels.
     

Share This Page