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ARP offers a head stud kit for Ford 351 R blocks equipped with C-3 heads that features undercut hex stud heads. The kit is tailored to that block-and-head pairing and uses the undercut hex profile to accommodate clearance or installation preferences. It’s provided as a complete stud set to restore or upgrade head fastenings on compatible 351 R / C-3 head combinations.
ARP Ford 351 R Block, w/C-3heads, undercut hex Head Stud Kit
