Crower 66321ST-2 Features:

Fits 396-454 Big Block Chevy early and late model blocks; pair of hydraulic short-travel roller lifters. Features HIPPO high-pressure pin oiling with EDM-metered lubrication to the roller pin and needle bearings. CNC-machined, heat-treated bodies use an orbit-formed captive-blade locking system with no loose snap rings. Standard 0.842 in. body diameter with vertical link bars; precision flow-checked for optimum leak-down control.

Hydraulic Short Travel Ro Hippo Pin Oiling, 396-454 BBC, Features:

• HIPPO EDM pin oiling for roller pin and needle bearings enhances lubrication under high-load, high-rpm operation
• Short-travel hydraulic roller design improves valve control and valvetrain stability in performance 396-454 BBC builds
• Fits early and late-model 396-454 Chevy blocks with standard 0.842 in. body diameter and vertical link bars
• CNC-machined heat-treated bodies with orbit-formed captive blade locking eliminate loose snap ring concerns
• Precision flow-checked leak-down rates support hydraulic reliability, load capacity, and extended cycle life