Rear spring rates Chevy Van
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  1. #1
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    Rear spring rates Chevy Van

    I'm converting my '56 Chevy van to 4 link. Just wondering if anyone has any idea of spring rates to use with coil over shox?
    Thanks
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    Loads of variables plus do you actually want to carry anything in the back or tow ?
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    I realise that - but I just need a starting point. I will be carrying some stuff, but will likely fit air bags for heavier loads.
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    ANY spring will give you a starting point . The amount it compresses ( when fitted under full load) can be used in a formula to tell you exactly what weight it is 'seeing ' so no guesswork. Coil overs are really for track and a larger coil spring would cover more variables by itself .

    Set rear at required ride height. Measure distance between mounting points and add 1" , that teh required shoick length. Spring should be just long enough to hand assemble when off truck. Try 500 for starters. If it compresses 1" under ful load then you've got it right . More or less means the rates wrong.
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    Thanks. I know all about shock length etc. Just wanted a starting point - so I guess 500lb. That was about my guess.
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    Sorry if I was teaching Grandma on that bit

    Difficult to know people skill / knowledge level from only a few posts .
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  9. #7
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    No offence taken! Advice always welcome - even at this late stage of life!!
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