Crower 66278X903T-2 Features:

Crower severe-duty mechanical roller lifters for Chevy LS1 applications, part number 66278X903T-2. .903 in. OD tall-body design engineered for small base-circle camshafts. +.300 higher link-blade location helps provide proper geometry with small base-circle cams. Integral 1-piece body and thick premium stainless steel alloy link blades support strength and rebuildability.

Severe Duty Rollers Chevy LS1 .903 In. Tall-body Design Features:

• Tall-body design engineered for small base circle cams in Chevrolet LS1 applications, helping maintain proper geometry where standard-body lifters may not provide needed clearance.
• .903 in. OD lifter body with .812 in. bearing, delivering the specified severe-duty roller configuration for Chevy LS applications that demand precise valvetrain control.
• Integral 1-piece body construction reduces weight while maintaining maximum strength, rigidity, and axle trueness for demanding high-performance mechanical roller valvetrain setups.
• Thick premium stainless steel link blades create a strong fastening system, and the fully rebuildable design supports long-term serviceability in competition-focused engine builds.
• Pair of severe-duty mechanical roller lifters, with the -2 suffix indicating a 2-piece sales unit for builders needing a matched pair for specialized Chevrolet LS1 valvetrain setups.