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4inch lift front spring measurement--on truck

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ColAdo82K5, Aug 5, 2002.

  1. ColAdo82K5

    ColAdo82K5 1/2 ton status

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    Hey,
    I pulled a supposed 4 inch lift off a truck. I put the front springs on and they look a little taller than 4 inchs. It may be a hassle but could someone measure their arc in their springs while on the vehicle. (small block engine weight) Like you connected the eye bolts with a string and the distance between the string and the u bolt mounting plate, perpindicular to the ground. (the lowest part of the plate for instance.) I guess this would be similar to measuring wheel backspacing.
    Any measurments welcome !
    THanks,
    Blake
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    OK, I used an actual string line from spring eye bolt to spring eye bolt. From the bolt center there was 2" between the string line and the underside of the U-bolt plate (which would be the top of the main leaf) So loaded arch for my Rancho 4" lift springs is 2". That's with a small block too, one battery, no winch, and a slightly heavier than stock front bumper (maybe 20 lbs heavier)

    Rene
     
  3. ColAdo82K5

    ColAdo82K5 1/2 ton status

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    YOU DA MAN, tRusty !! Thanks a ton for that measurement. It will help me fiqure out how to level the rear side out ! I have the saggy butt on mine.
    I have no idea the brand of these springs so other ideas/measurements are welcome !

    Long Live Steve Fox !

    Blake
     
  4. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    No problem. My wife doesn't even look at me funny when I head outside with the tape anymore.../forums/images/icons/smile.gif

    For reference my fronts are 4" Rancho's about 7 years or more old. They are over 500 lbs/inch spring rate so I doubt they have sagged any.

    Rene
     

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