Chevy 348 Big Block Engine Restoration Drill Fixture
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Billet steel main caps from CRV 409 Parts are added to the center three positions and boost bottom-end reliability to 700 hp. Each cap is used as a drill fixture to accurately position the splayed outer bolt holes in the main webs. ARP 1/2-inch center studs and 7/16-inch outer bolts replace the stock 1/2-inch bolts. View Related Article
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