I am in the process of lifting my 74 J20 in the rear to match the front SOA (7"). I have re-engineered a spring hanger bracket from a ford to do away with the front post mount on the rear. I have a set of J-10 rear springs that I was wanting to use and the reason I was wanting to use them is because they are the same length and center as my old post mount springs.
My problem is this I marked the center of the axle on the frame before I removed the post mount and original springs, once I flipped the rear shackle(@90 degrees) and temporarily installed the front spring holder the center of the axle is 1.063" toward the rear.
My question is this. Do I need new springs to do this "shackle" flip? I sort of remember someting about chevy 52" springs ...I think. If I do need a new set of springs does anyone know the dimensions? I have a local spring shop here that can do almost anyting.
Also my Jeep is only a bare frame at the moment and I was curious as to the degree my rear shackle should be at? Due to there being basicly no weight on the Jeep. Would 90 degrees be acceptable ?
My problem is this I marked the center of the axle on the frame before I removed the post mount and original springs, once I flipped the rear shackle(@90 degrees) and temporarily installed the front spring holder the center of the axle is 1.063" toward the rear.
My question is this. Do I need new springs to do this "shackle" flip? I sort of remember someting about chevy 52" springs ...I think. If I do need a new set of springs does anyone know the dimensions? I have a local spring shop here that can do almost anyting.
Also my Jeep is only a bare frame at the moment and I was curious as to the degree my rear shackle should be at? Due to there being basicly no weight on the Jeep. Would 90 degrees be acceptable ?
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