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The COMP Cams Magnum Roller Rocker Arm for Ford 289–351W Windsor applications ('68–'89) pairs a 1.6:1 ratio with 3/8" studs to improve valve lift for street builds. Made from 8620 chromemoly steel and fitted with a roller tip, the design minimizes tip friction and resists flex for consistent operation. Rated for systems under 350 lbs open spring pressure, these rockers serve as a direct-fit performance-oriented replacement.
COMP Cams Magnum Roller Rockers Ford SB
