COMP Cams Camshaft CS XM 256H-12

This COMP Cams CS XM 256H-12 camshaft is a hydraulic flat tappet camshaft designed for Chevrolet Gen 1 Small Block engines. It's a well-built option that offers a good balance of performance and economy, making it a popular choice for inboard/outboard pleasure boats, skiing, and general use where improved efficiency is desired. The camshaft has a 212/218 degree duration at 0.050 inch lift, which is a common specification for mild performance upgrades on these engines.

This camshaft is constructed with durable materials suitable for the demands of engine operation. It's designed to fit a wide range of Chevrolet Small Block Gen 1 engines, including popular displacements like the 262, 283, 305, 327, 350, and 400 cubic inch V8s. However, it's important to verify your specific engine's configuration, as it does not fit LT1/LT4 engines or factory roller camshaft blocks from 1985 and newer. For 1955-1957 models, confirm if your block requires a specific oiling groove on the rear journal.

When installing this camshaft, it's always a good idea to replace your valve springs and lifters to ensure optimal performance and longevity. Refer to the manufacturer's installation instructions for detailed guidance on the process.