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The ARP head stud kit for big-block Chevrolet with an aluminum block is specified with 1/2-inch studs for BB Chevy aluminum-block applications. The kit supplies studs and hardware sized for that block type, providing the fastener configuration intended to secure cylinder heads and support consistent clamping and gasket sealing in high-load builds that pair aluminum blocks with big-block Chevy heads.
ARP BB Chevy w/alum block 1/2in head stud kit
