Crower 66215X903-16 Features:

Crower severe-duty solid/mechanical roller lifters for Small Block Ford V8 221-302-351W-400, set of 16 0.903 in. OD lifter body with oversized 0.812 in. bearing diameter for increased load capacity and rigidity Integral 1-piece full-body design, CNC machined from special alloy and heat-treated for wear resistance Centered seat design with 1.590 in. seat height, 130 g weight, and bearing slot to reduce bore and tappet wear

Roller Lifters Ford 221-3 .903 Od/.812 Bearing Solid Roller Features:

• 0.903 in. OD full-body lifters, 0.812 in. oversized bearings, solid/mechanical roller design for Small Block Ford 221-302-351W-400 race applications
• One-piece CNC-machined special-alloy body, heat-treated for wear resistance, severe-duty construction for high-load, high-rpm valvetrain operation
• Centered seat design with 1.590 in. seat height, accommodates high-rev kits, precision-engineered bearing slot helps reduce tappet and lifter bore wear
• Thick-wall oversized bearing construction increases load capacity and rigidity in demanding full-race environments, 130 g weight per lifter
• Set of 16 roller lifters for Small Block Ford V8 builds, simplified full-body style supports stability and consistent performance under extreme valvetrain stress