Crower 66493L-2 Features:

Crower severe-duty raised-seat mechanical roller lifter, part number 66493L-2, for BBC and Big Chief intake applications. .842 in. lifter diameter with .750 in. bearing and .150 in. offset intake seat configuration. Raised pushrod seat height of +.300 in. helps fit Dart BBC blocks without grinding the lifter bore for clearance. Left pair design for cylinders 2, 3, 6, and 7 in compatible Chevrolet big-block valvetrain setups.

Severe Duty Rollers Raise Raised-seat BBC Big Chief .150 Features:

• Raised-seat mechanical roller lifters for BBC and Big Chief intake applications, left pair for cylinders 2, 3, 6, and 7
• 0.842 in. lifter body with 0.750 in. roller bearing supports severe-duty valvetrain stability under high spring loads
• 0.150 in. offset intake seat and +0.300 in. pushrod seat height provide added pushrod and lifter-bore clearance
• Helps eliminate lifter-bore grinding in Dart BBC blocks by creating needed pushrod clearance with the raised seat design
• Crower severe-duty mechanical roller lifter design suits high-load racing valvetrain setups requiring precise intake offset geometry