Notes: Race Hydraulic Flat Lifter for Chevrolet Small and Big Block
COMP Cams hydraulic lifters have a patented, constant orifice-metering valve that precisely meters oil to the rocker arms. Continuous contact between the metering valve and the precisely coined bottom surface of the pushrod seat is maintained throughout the engine's rpm range, eliminating excessive oiling at high speeds. The pushrod seat is made of a special, powdered-metal iron alloy and heat-treated for strength and wear resistance. These lifters are produced with a longer piston than conventional hydraulic lifters. The extra length is made possible from a counter-bored pushrod seat position. The longer piston is produced with through-hardened steel that provides more bearing surface and increased lifter longevity.
