Rear end bolt
Take a bolt that's a good 1/2 longer than the ones in it.Cut the head off,thread a nut or two if you have the extra length. Thread the stud in,nut down to plate,and the 2nd one if you originally picked out a real long bolt.Now carefully back out without moving the nuts.You have now the length, without measuring. But remember this is the absolute maximum.Too long of a bolt,you will strip or Crack cast iron.A thread chaser not tap is also another tool to clean up threads in the rear end housing.Wire brush the bolts if you reuse the old ones.If this is a new purchase,you can't be sure what the p.o.did.And leave the impact on the shelf,a ratchet you can feel much better the proper bolt tightening torque
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