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how do you think factory nuts stay in place, at least on a gen1 small block? the nuts have pressed sections that bite the threads. I just installed a set of full rollers on mine. the tracks the factory nuts leave on the stud provide a good resistance to the poly lock. just waiting for a few parts so i can get it in the car. I lost the f***ing motor mount bracket.
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2000 Tahoe Z71 5.7
1982 Z28 Pacecar 305
1999 S10 
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