Crower 66278TH-16 Features:

Crower 66278TH-16 severe-duty mechanical roller lifters, set of 16, for GM LS-series and Vortec V8 applications. HIPPO high-pressure pin oiling helps lubricate the roller pin for improved durability in high-lift race and street use. Taller +0.300 in. higher link blade design is engineered for small-base-circle camshaft combinations. 0.842 in. body diameter, 0.750 in. needle bearing diameter, vertical link bar, and cutaway solid roller lifter style.

Severe Duty Rollers Chevy LS1 Hippo +.300 In. Higher Features:

• HIPPO pin oiling for improved roller bearing lubrication in high-lift valvetrain use and severe-duty service life
• +.300 in. taller link-bar blade location for small base-circle camshaft clearance and correct LS-series geometry
• 0.842 in. body diameter with 0.750 in. needle bearing roller for precise fit and reduced friction at high rpm
• Vertical link-bar mechanical roller lifter design for LS1, LS2, LS3, LS7, and Vortec 4800/5300/6000 V8 engines
• 16-piece severe-duty cutaway solid roller lifter set for race-focused durability and demanding street performance