Crower 66493R-2 Features:

Crower 66493R-2 severe-duty mechanical roller lifter for BBC and Dart Big Chief intake applications. Right-offset pair for cylinders 1, 4, 5, and 8 with a .150 in. intake offset. Features a .842 in. lifter body diameter and a .750 in. roller bearing for valvetrain use. Raised pushrod seat height is +.300 in. to help clear Dart BBC blocks without lifter bore grinding.

Severe Duty Rollers Raise Raised-seat BBC/Big Chief Right-offset .842 Features:

• Raised-seat mechanical roller lifter for BBC and Big Chief intake applications, right-offset pair for cylinders 1, 4, 5, and 8.
• 0.842 in. lifter body diameter with 0.750 in. bearing for severe-duty valvetrain use in high-performance engine builds.
• 0.150 in. right intake offset supports specialized valvetrain geometry on compatible Big Block Chevy and Big Chief combinations.
• +0.300 in. higher push rod seat height improves push rod clearance in Dart BBC blocks without lifter-bore grinding.
• Severe-duty raised-seat design for mechanical roller setups requiring taller body geometry and right-side intake offset.