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47-54 Chevy truck drop axle ??

Discussion in 'The Hokey Ass Message Board' started by Johnny La-Chingas, Jan 21, 2013.

  1. Johnny La-Chingas
    Joined: Feb 12, 2009
    Posts: 75

    Johnny La-Chingas
    Member

    Hello any threads on a step by step install of a drop axle? Im thinking of buying a 4" axle from Sid for my 48 chevy truck, but some detailed pictures would really help close the deal.. And If some one could tell me how to post pictures from my iPhone I'll post some pictures up of my 48 chevy truck.. Can't figure this out!
     
    alex-c likes this.
  2. lawman
    Joined: Sep 19, 2006
    Posts: 2,665

    lawman
    Member

    My grandson and I put a 3" dropped axle under his 38 chevy truck
    that we are using a 51 chevy 1/2 ton frame under.We wanted to use a 4" but after the axle ( speedway tube)was installed we were glad we used a 3".
    I must note that we removed two leaf's out of the pack before we added the
    axle and noted that a 4"drop would be too low. Hope this help's.
     
  3. waldo53
    Joined: Jan 26, 2010
    Posts: 863

    waldo53
    Member
    from ID

    If you go to Sid's website (droppedaxles.com), and click on "Tech Articles", the click on "Chevy axle install", there's a step-by-step procedure with pictures.
     
    guthriesmith likes this.
  4. Johnny La-Chingas
    Joined: Feb 12, 2009
    Posts: 75

    Johnny La-Chingas
    Member

    Hey Waldo is that 53 truck of yours lowered with a drop axle from Sids?
     
  5. waldo53
    Joined: Jan 26, 2010
    Posts: 863

    waldo53
    Member
    from ID

    Yes, I've got a 3" dropped axle from Sid and I also took out 3 of the shorter leafs. Talk to Sid, he's a good guy, has all the answers, and a member here on the HAMB .
     
    Neto1 likes this.
  6. Mr48chev
    Joined: Dec 28, 2007
    Posts: 35,485

    Mr48chev
    ALLIANCE MEMBER

    Outside of the king pins it's all unbolt and bolt back in place. You may have to tweak the steering arms for the tie rod to clear the springs in some cases.
     
    Neto1 likes this.
  7. I have a three inch drop from Sid in a '49 AD with 235/75-15s and I only have 5.5" clearance from the axle to the ground allowing about an inch of clearance on the scrub line. I would be afraid that something might drag on the pavement in a blowout situation i fit was any closer.

    With the three inch drop you have to change your tie rod to mount from the bottom to clear the spring. Sid removes the factory attachments, then drills and taper reams the steering arms for modern tie rod ends. Call Sid, he will walk you through all the changes that are needed to make it right. Dropping the axle is the easiest part, all the other pieces run the cost up. I was in close to $800 by the time I got the new drag link, tierod, king pins, axle shims and other odds and ends to finish it up.
     
    Last edited: Jan 22, 2013
    Neto1 likes this.
  8. waldo53
    Joined: Jan 26, 2010
    Posts: 863

    waldo53
    Member
    from ID

    The more you can do yourself, the less the project will cost. I have about $500 in mine including new tie rod ends and kingpins from Chevs of the 40's. I "flipped" the tie rod ends, mounting them from the bottom, the 1/2 ton tie rod ends are non-tapered and the ends Chevs of the 40's sells will go in either way. I bent my steering arms down a little with my trusty torch. But, having Sid do this for you will save you time and frustration, especially if you don't have the tools to do it.
     
    Neto1 likes this.
  9. Joe Padilla
    Joined: May 24, 2021
    Posts: 1

    Joe Padilla
    Member
    from Salida ca

    If I go with a 3in axle drop on my 48 will I need to replace the steering arm thanks for any info
     

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