Crower 66015RM-1 Features:

Crower 66015RM-1 premium Rev-Max hydraulic flat tappet lifter for Small Block and Big Block Ford V8 applications. Exact-fit design for Ford 221, 302, 351, 370, 400, 429, and 460 engines with a 0.874 in. lifter body diameter. Features a 1.705 in. pushrod seat height and approximately 103.5 g to 103.9 g weight for controlled valvetrain operation. Precision radius face, tight dimensional tolerance control, and flow-checked slow leak-down support high-rpm stability.

Hydraulic Lifters Premium Rev-max High-rpm 0.874 In. Ford Fit Features:

• Exact-fit small-block and big-block Ford V8 compatibility for 221, 302, 351, 370, 400, 429, and 460 engines
• 0.874 in. lifter body diameter with 1.705 in. pushrod seat height for precise valvetrain geometry and fit
• Precision radius face and tight tolerance control for consistent lifter-to-bore fit and stable cam contact
• Flow-checked slow leak-down, anti-pump-up design for stable high-rpm operation without valvetrain float
• Heavy-duty internals and ball-check oil control valving for extended cam lobe life and no lash adjustments