Crower 66322-16 Features:

Crower 66322-16 hydraulic roller lifters for GM/Chevrolet LS1 engines; requires a +.190 in. longer-than-stock pushrod for correct valvetrain geometry. Hydraulic roller design delivers roller-lifter performance with hydraulic, maintenance-free operation for street and high-performance LS1 builds. CNC-machined, heat-treated bodies provide added wear resistance and structural integrity under demanding valvetrain conditions. Precision flow-checked lifters help maintain optimum leak-down rates for consistent hydraulic function and reliable performance.

Hydraulic Roller Lifters LS1 Link-bar Hydraulic Design, +.190 In. Features:

• GM LS1-specific fitment; requires +0.190 in. longer-than-stock pushrod for correct valvetrain geometry and installation
• Hydraulic roller design combines aggressive cam-following performance with maintenance-free hydraulic lash control
• CNC-machined, heat-treated body for wear resistance, structural integrity, and heavy-duty valvetrain durability
• Precision flow-checked internals help maintain optimum leak-down rates for consistent hydraulic lifter operation
• Link-blade linked-pair construction keeps rollers aligned with camshaft lobes in high-performance LS1 applications