There are some shorter polylocks Crower and Comp use with some of their SS rockers. I have some chrome repop style valve covers with E heads and a thick gaskets and HS rockers which have a slightly taller poly lock. Same thing on the 400 6X-4 in the 81 HS and chrome repop valve covers.
I think I used ARP SBC studs for both.
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Skip Fix
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