Correction- The first sentence reads like I am actually changing "stock 7/16 studs" to bottle neck, that was describing the stock studs that are 7/16 but step down to 3/8" for the factory lock nuts...
Ok so the ARP studs being .25" longer isnt an issue, but poly locks might be. I will stick with crimped nuts for these. Just wanted to be sure the longer studs wouldnt cause a fit or function issue. I will test fit everything to be sure.
Come to think of it, a E-head motor I have uses the longer studs with poly locks & full roller rockers, the stock height aluminum covers fit with the thicker felpro gaskets.
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