COMP Cams Thumpr Hydraulic Roller - Camshaft - Lift 0.557/0.539 in - Duration 283/303 - 107 LSA - 1900/5600 RPM - Big Block Ford 24-VER-N-115 1999-2004 Chevrolet Silverado 2500 78 39703 Size:Small (48) 6 Head Bolt Design GMP19170419
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Ships within 48 hours · Estimated delivery Oct 7 - Oct 12