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proper shock length?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by djohnsn, Apr 6, 2001.

  1. djohnsn

    djohnsn 1/2 ton status

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    What is the best way to choose the proper shock length? I am finishing the installation of my 4" Skyjacker springs on my 78 and need to see if my existing shocks will work. I have measured between upper and lower shock mounts with the truck sitting level (just under 20"). I then used a floor jack to compress one side as far as I could and measured (just under 18" - I ran out of jack, but this should be close). With one side compressed, I then measured the other side (about 22"). These measurements are for the front only. Is this a good way to measure? The truck is not drivable yet because of rear 12-bolt problems, but I want to go ahead and finish the front.

    I seem to remember a website (Toyota related?) that had measurements for Rancho shocks. Does anyone happen to know the URL?


    DJ
    78 K5
     
  2. Emmettology 101

    Emmettology 101 3/4 ton status

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    Well if you just want to run a "normal" sized shock, call the lift Mfg and ask what size they recommend..

    For a shock that gives you the best articulation, see if you can find somewhere that has a ramp(can you a sloped wall or something similar) on a forklift and take the same measurements that you did before.....

    Did you try using a block on top of you jack to get the axle/tire up higher?

    Not sure on the Toyota site..


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  3. djohnsn

    djohnsn 1/2 ton status

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    I found the page that I remembed - http://www.off-road.com/toyota/tech/shocks/

    I have the shocks that Rancho recommended for a 4" lift, but I don't believe that they extend far enough.

    I guess what I really need to know is if my way of measuring is reasonably accurate.

    DJ
    78 K5
     
  4. Emmettology 101

    Emmettology 101 3/4 ton status

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    Sorry.

    Yes it is pretty accurate, but it would be best if you can get the springs to full compression and full droop to get a more accurate measurement....


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