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The COMP Cams Pro Magnum hydraulic flat tappet lifters are specified for Chevrolet Small Block V8 (265–400) and Big Block V8 (396–454, 348–409) applications. Designed to prevent harmful pumping up at higher RPM, they maintain internal piston position for consistent operation and require an adjustable valve train with specified preload to realize improved high‑RPM performance.
COMP Cams Pro-Mag Hydr Lifters Chevy SB
