Crower 66915LW-1 Features:

Crower 66915LW-1 solid lightweight mechanical flat tappet lifter for Ford 221-351 small-block and 429-460 big-block engines Single lifter design with 0.874 in. diameter, 1.640 in. seat height, and approximately 75 g weight per lifter Precision-ground radius face and specialized surface finish support fast break-in and help reduce premature cam lobe wear Solid lifter construction is engineered for long cam and lifter life with reliable, trouble-free valvetrain operation

Solid Lifters Lightweight 0.874 In. Diameter, 1.640 In. Seat Features:

• 0.874 in. diameter mechanical flat-tappet lifter for Ford 221-351 and 429-460 engines, lightweight 75 g design for reduced valvetrain mass
• 1.640 in. seat height supports correct fitment in compatible Ford small-block and big-block applications, single lifter configuration
• Precision-ground radius face promotes proper cam contact, faster break-in, and reduced risk of premature camshaft lobe wear during setup
• Specialized surface finish helps extend cam and lifter service life, supporting consistent flat-tappet operation in mechanical valvetrains
• 75-77 g lightweight construction aids stable high-rpm valvetrain performance, trouble-free operation, and dependable long-term wear control