COMP Cams Camshaft CS Nx268H-13

This COMP Cams Xtreme Energy camshaft is built for Chevrolet Small Block V8 engines, specifically those from 262 to 400 cubic inches. It's a popular choice for street machines looking to add a significant power boost, especially when paired with a 125+ horsepower nitrous kit, a 2200+ RPM stall converter, and gear changes. You can expect a noticeable improvement in torque, acceleration, and throttle response, along with a satisfyingly choppy idle that lets everyone know you mean business.

The design of this camshaft focuses on maximizing performance across the RPM range. It features a faster intake valve opening to increase engine vacuum and sharpen throttle response. The intake valve closing ramps are designed to shut the valve sooner, building more cylinder pressure and torque without creating excessive valvetrain noise. On the exhaust side, smoother designs help efficiently purge spent gases, further contributing to horsepower gains. This camshaft is suitable for use with either a carburetor or a tunable fuel injection system.

When installing this camshaft, it's important to verify your engine's configuration. While many later model Small Blocks (1987 and newer) came with provisions for roller lifters, many trucks from that era still used flat tappet lifters. If your block has OEM-style roller provisions and you desire a roller cam, COMP Cams offers specific hydraulic roller lifter install kits for different block years. For engines built between 1955 and 1957, ensure the 5th cam journal has a groove for proper oiling; custom orders are available for these applications.