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flip moving rear axle forward

Discussion in 'OffRoad Design' started by 90blzr, Apr 4, 2001.

  1. 90blzr

    90blzr 1/2 ton status

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    How much does the 4" shackle flip move the rear axle forward? Some have said they dont like the kit because it would make the wheel off center in the wheel well. Is this true? I would like to go with the 4" flip and 4" springs instead of 8" springs for the ride and all, but if I can help it I dont want the wheel to be off center either. Is there a fix for this?? Is it one or the other or can I have to decide which I want more, looks or function?? Can I have both. Any one else have to make the same descision or have this problem? Thanks for the help!!
     
  2. DPI

    DPI 1/2 ton status

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    I have the set-up you are wanting. 4" flip and 4" BDS springs. This moved the rear axle forward about 1.5". I fixed this by buying two 1"x2.5"x8" lift blocks, a 9/16" piece of straight (not threaded) ubolt( or you can use a 9/16 grade 8 bolt, and two new center pins from my local spring shop.
    Here is a drawing of what I modified on the relocation block.
    This seems to work well and I have not had any problems with it.
    <IMG SRC="http://albums.photopoint.com/j/View?u=1439605&a=10797147&p=45810791&Sequence=0[/url]

    [image]http://www.nantucketfire.com/img8.gif">
     
  3. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    DP_90K5,

    I printed out the diagram and have been studying it for a while. In your illustration, is the front of the vehicle to the "right"? I am guessing that the bolt that faces upward is the one that goes through the spring pack, and the "pin" that sticks out the bottom in your diagram goes into the angled shim on the axle?

    It seems like this would add 1" of lift to the 8" of suspension (4" spring, 4" shackle) for a total of 9"? How does the truck look in terms of "rake" is it higher in the back, or does it sit level? Do you typically run it with the hartop on or off? (Curious about the weight difference and how it affects ride height, and ride stiffness)

    Any followup info would be great.... from what I've been reading lately, shackle flips and small lift springs ride a lot softer than trying to do all the rear lift with a heavily re-arched rear spring pack. I'm curious to get your driving impressions with this setup.


    -Greg72
     
  4. DPI

    DPI 1/2 ton status

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    The front of the vehicle is to the left, so the center bolt pointing up would go towards the front and through the spring pack.
    I have a Dana 60 up front with 5.5" BDS springs. I would say it is about 7.5" in front and yes it is a total of 9" in the rear. The rear wheel opening is 3/4" lower than the front. I run with my top on (never had it off, yet).
    The ride is excellent. A lot better than stock and it is flexy. I have the 9012s all the way around with the F**D shock mounts up front.
    The shackle flip is the way to go in my opinion. Just need to move the axle back after the flip is installed. This is a very easy mod and only takes a couple of hours to complete. It would go even faster if you did it while doing the flip.
    dp


    [​IMG]
     
  5. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    OK....I get it now. The shackle flip moved the axle forward, and your bracket moves it BACK to it's original position! [​IMG]

    Did you do a custom shock mount in the rear? I think somewhere on this website there is an article with a K5 with a custom-crossmember between the framerails that holds the upper mounts of the shocks.

    I'm pleased to hear that you like the ride with the new suspension. My '72 K5 uses a 3-leaf front spring pack, and it feels really stiff over bumps and sends a "shudder" through the whole truck as it bounces over the bumps. I think a much softer front spring would help a LOT!

    -Greg72
     
  6. DPI

    DPI 1/2 ton status

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    I used the existing frame mounted mounts, but I did relocate the mounts on my 14 bolt to gain additional ground clearence and wheel travel.

    [​IMG]
     
  7. 90blzr

    90blzr 1/2 ton status

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    Top for Mudstud.
     

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