It would depend on the specific u bolt I believe. The ones I got from alcan said 125lbs. You also have to make sure that you are tightening them equally, if uneven (ie one bolt with more threads showing than the others) that might possibly cause one to strip
Thanx for info. I did set them evenly. Finger threaded them to stick equally thru the nuts. Then torqued them to 74 ft lbs. Upon re torquing them a week later, one just kept spinning. I have a new nut and u bolt but wont install till I have solid info. Thanx again.
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