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I posted earlier about M37 springs, and got the correct arch for the front springs. I would really like to know the original arch for the rear springs if anyone has it.
I have 2 sets of 11 leaf springs, and they are all within 1/4" of each other. A friend has offered me a rear spring that has about 2 1/2" more arch than these. I need to know if the 2 sets I have are clapped out or not.
Thanks,
Tim

I have about the same question.
As the truck sits fully assembled and on the ground with good springs, how large should the gap be between the axels and rubber bumpers?
Rich