Re: 1970 Camaro Rear Bumper Guard
I believe on the assembly line the workers would mark and drill the rear valence with a 33/64" drill (Slightly larger than 1/2") and then slip in the Wellnut rubber thread inserts. The nutserts have a bronze 1/4UNC thread insert molded inside and are shouldered. Once the bolt is inserted and tightened, the rubber swells outward, locking inself to the valence. Great for those blind holes where no wrench can go....
Paul
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70 Camaro LA Z-28 03B Citrus Green LT-1 M-40 3.73's
69 Camaro X-77 Z-28 10C Cortez Silver M-21 3.73's Deluxe Project X - SOLD
69 Camaro X-77 Z-28 01B Garnet Red w/Black top, M-20 3.73 Deluxe Houndstooth
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