
COMP Cams 812-16 High Energy Flat Tappet Hyd. Lifters Set for Chevrolet Big or Small Block Engines
HIGH ENERGY™│Hydraulic Flat Tappet Lifters Patented orifice metering valve precisely meters oil to the rocker arms Continuous contact between the metering valve & pushrod seat is maintained: Eliminating excessive oiling at high RPM Pushrod seat is made of a special powdered metal iron alloy that is heat-treated for strength & wear resistance Longer piston than conventional hydraulic lifters, which provides more load bearing surface & increases lifter longevity Lightweight check valve disc allows for quicker response, which results in increased engine speed before valve float Lightweight check valve disc maintains added control at all engine speeds & loads APPLICATIONS Chevrolet: Small Block, Gen 1: 262-265-267-283-302-305-307-327-350-400 V8 ('58-'98) Big Block, Gen 1 "W" Series: 348-409-427 ('58-'65) Big Block, Gen 2 Mark IV & V Series: 366-396/402-427-454 SPECIFICATIONS .842” Diameter • 94g Weight • 1.99” Seat Height