COMP Cams Stage 2 Thumpr 226/237 Master Camshaft Kit GEN3 LS 4.8/5.3/6.0L

COMP Cams Thumpr LS Master camshaft packages come as a complete valvetrain parts package that is matched for specific LS applications and desired performance. COMP Cams engineers have spent countless hours testing and creating valvetrain component combinations that are perfectly matched for maximum horsepower and dependability, as well as creating that wildly popular Thumpr sound in GM LS applications. These packages can add anywhere from 60 to 110 hp (depending on the application). This is a larger version of the No Springs Required (NSR) Thumpr design, ideal for more highly modified 5.3L & 6.0L truck applications with headers, converters, and gears.