Crower 66493HL-2 Features:

Crower Severe Duty mechanical roller lifter, part number 66493HL-2, for BBC and Big Chief applications. Raised pushrod seat is +.300 in. higher to fit Dart BBC blocks without grinding the lifter bore for clearance. Features .842 in. lifter diameter, .750 in. bearing, and .150 in. intake seat offset for valvetrain geometry. Left-pair configuration for cylinders 2, 3, 6, and 7 with intake offset design for BBC and Big Chief intake layouts.

Severe Duty Rollers Raise BBC Big Chief Intake Offset Features:

• Raised-seat mechanical roller lifters with +0.300 in. pushrod seat height for Dart BBC block fitment and added pushrod clearance
• 0.842 in. lifter diameter with 0.750 in. bearing for severe-duty valvetrain stability and roller durability
• HIPPO high-pressure pin oiling for maximum pin lubrication in high-rpm and racing applications under heavy valvetrain loads
• 0.150 in. intake seat offset, left-pair configuration for cylinders 2, 3, 6, and 7 with corrected valvetrain geometry
• BBC and Big Chief intake application, eliminates lifter-bore grinding for clearance in raised-seat offset installations