COMP Cams Camshaft CS XR280 R-10

COMP Cams is well-known for making performance engine components, and their Xtreme Energy line of camshafts is a popular choice for enthusiasts looking to get more out of their engines. This XR280 R-10 solid roller camshaft, part number 12-771-8, is designed for Chevrolet Small Block engines and is optimized for street machines that are set up for serious performance. It's a solid choice if you're running a setup with a 2800+ RPM stall torque converter, a compression ratio of 10:1 or higher, and rear gears in the 3.73 to 3.90 range.

This camshaft features a 242-degree intake and 248-degree exhaust duration at .050 inch lift, with a .571 inch intake and .590 inch exhaust lift. It's a solid roller design, which means it requires specific valvetrain components for optimal performance and durability. It's important to note that this camshaft is optimized for use with a melanized or nitrided distributor gear. Using cast iron or steel gears without similar surface treatments will void the warranty and can lead to premature wear. You'll need to confirm your engine's configuration; this camshaft fits many Chevrolet Gen 1 Small Blocks like the 262, 283, 305, 350, and 400, but it does not fit LT1/LT4 or factory roller small blocks from 1985 and newer. Early 1955-1957 engines also have specific oiling groove requirements that need to be checked.

This camshaft fits a wide range of vehicles, including many Chevrolet, Buick, and GMC models from the 1980s and 1990s. It's a significant upgrade for those looking to build a powerful street machine. Remember to consult your engine's specific build and the manufacturer's instructions to ensure proper installation and compatibility with your existing valvetrain components.