Crower 66015RM-16 Features:

Crower Rev-Max hydraulic flat tappet lifters for Ford 221, 302, 351, 370, 400, 429, and 460 V8 engines Part number 66015RM-16 with 0.874 in. diameter, 1.705 in. seat height, and 103.9 g weight Slow leak-down design increases valvetrain stability and supports a 300-400 RPM gain over standard lifters High-performance valvetrain upgrade recommended for new hydraulic flat tappet camshaft installations

Hydraulic Lifters Rev-max Slow Leak-down Flat-tappet For Ford V8 Features:

• Slow leak-down design for improved valvetrain stability, reduced bleed-off, and more consistent high-rpm control under demanding performance use
• Rev-Max hydraulic flat tappet lifters engineered for Ford 221, 302, 351, 370, 400, 429, and 460 V8 applications and new camshaft installs
• 0.874 in. diameter and 1.705 in. seat height support precise fitment, proper lifter geometry, and reliable hydraulic lifter operation
• 300-400 RPM gain over standard lifters helps extend usable power range and improve high-rpm performance in performance-built Ford V8 engines
• 103.9 g weight with USA-made precision construction helps promote durability, dependable valvetrain function, and enhanced rpm potential