Crower 66379X937H-2 Features:

Crower 66379X937H-2 severe-duty roller lifters for Ford 429-460 V8, replacement 2-piece pair .937 in. OD intake-offset design with High Pressure Pin Oiling and EDM-fed needle bearing lubrication One-piece CNC-machined special-alloy bodies with heat-treated construction for wear resistance in full-race use Larger-diameter, thick-wall bearings and precision-ground roller wheels support high-rpm, high-spring-pressure valvetrains

Severe Duty Rollers 429-4 .937 In. Od Intake Offset Features:

• One-piece CNC-machined alloy body, heat-treated for wear resistance and full-race durability in Ford 429-460 applications
• .937 in. OD intake-offset design for 429-460 Ford big-block valvetrain geometry and precise lifter fit
• HIPPO EDM pin oiling feeds needle bearings directly for improved lubrication in high-load, high-rpm use
• Large-diameter thick-wall bearings and precision-ground roller wheels reduce friction, lobe wear, and improve cycle life
• Replacement 2-piece severe-duty roller lifter pair for high-spring-pressure builds; unrestricted oil flow recommended