Check the listing for details. COMP Cams 2900-8 Performance Series Lifters, Solid Flat Tappet, Fits Chevy. Condition: New. Listed at 78.95 USD. COMP Cams Performance Series Solid/Mechanical Lifters for Small and Big Block Chevy, Pontiac, Oldsmobile and Cadillac, Set of 8. COMP Cams Performance Series Solid/Mechanical Lifters are premium lifters designed specifically for high-end street and race applications. Built to extreme precision tolerances to create the most durable solid lifters available, Performance Series Lifters are engineered to handle elevated, race application valve spring pressures. Each lifter features a precision-ground crown radius and surface finish to extend high-rpm durability and promote compatibility with performance Camshafts. Precision-ground crown radius and surface finish promote performance Camshaft compatibility and high RPM durability.