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63" spring swap and ran into a wierd problem.

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by eripley, Mar 10, 2006.

  1. eripley

    eripley 1/2 ton status

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    Well a couple weeks ago I installed 63" springs on my 79 chevy blazer. I bought two rear spring front hangers and used them for the rear. I did a bit of research before tackling this project and read nothing like what I encountered. Since I had the front and rear of the spring already bolted up I had a extremely hard time lining up the springs center pin into my spring pads on the axle. After being done I noticed that my rear shackles were "bowed" out at the bottom and at a drastic angle like this / \ looking at it from the rear. I then posted a message about crooked springs but got no answers.

    I now realize the problem.

    My frame is actually 1" narrower at the back than at the front. And since I am using the front hangers on the rear the springs are actually twisted. So what do I need to do? Nobody else mentioned this issue and I dont realize why I encountered it. Is is as simple as placing a 1" plate behind the hanger? (Well not really simple as I have to unbolt the hanger and make a shim and bolt the rear hangers back up.) or would you move the spring pads on the axles (which really doesnt fix the problem)?

    Is there anything I didnt think of?

    please help.

    Thanks in advance for any answers.

    Eric
     
  2. sweetk30

    sweetk30 professional hooker Premium Member

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    did you use 1/2 ton or 3/4 ton hangers? or 1 ton hangers? the 1 ton hangers are not as wide off the frame as the others. this might be a possible problem. or you could just space them out and bolt them back on. i seen another member get in a bind with the 1 ton hanger difference problem before.
     
  3. eripley

    eripley 1/2 ton status

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    The hangers I bought were identical to the ones that were on my truck orginally. So to answer your question all 4 hangers are 1/2 ton.
    Thanks.
    I think I'll unbolt them and space them out like you said unless I hear something from someone else in the next day or so.
     
  4. sweetk30

    sweetk30 professional hooker Premium Member

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    do a search or a question in the garage with a link to this post. might get more info in there.
     
  5. KingDuramax

    KingDuramax 1/2 ton status

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    Are the springs themselves the same width as the ones you replaced?
     
  6. eripley

    eripley 1/2 ton status

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    Yes exactly just longer.
     
  7. KingDuramax

    KingDuramax 1/2 ton status

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    Hmmmmmmm? Where to look next?
     
  8. CyberSniper

    CyberSniper 1/2 ton status Premium Member

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    The Blazers of that generation of tub/frame had a wider frame in the front. Therefore, the spring hangers were thinner. You need to run pickup truck front spring hangers in the rear for a shackle flip on a K5. I'm running 64s on my 79K5 frame.
     
  9. eripley

    eripley 1/2 ton status

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    How come nobody mentioned this when talking about their hanger swap? I cant afford to buy another set of hangers! So whats the next best option?
     
  10. sweetk30

    sweetk30 professional hooker Premium Member

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    space it out. but make sure to use some solid stock not tubing.
     

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