Xtreme Energy™ 218/224 Hydraulic Flat Tappet Cam K-Kit for Pontiac 265-455. Excellent response with good mileage. Stock converter or 1800 stall. Mild gear. Grind Number:XE262H Engine Family:Pontiac 265-455 c.i. 8 Cyl. (1955-1981) RPM Operating Range:1,300-5,500 Cam Type:Hydraulic Flat Tappet Lifter Style:Hydraulic Flat Tappet Camshaft Series:Xtreme Energy Usage:Street/Performance Camshaft Material:Cast Iron California Proposition 65:WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Advertised Intake Duration:262 Advertised Exhaust Duration:270 Intake Duration at .050 Inch Lift:218 Exhaust Duration at .050 Inch Lift:224 Intake Valve Lift:0.462 Exhaust Valve Lift:0.47 Lobe Separation:110 Assembly Lubricant Included:Yes