COMP Cams Camshaft GM LS2/LS3 1 Bolt 27

COMP Cams is well-known for making performance valvetrain components, and this LSR camshaft is a prime example of their expertise for GM LS engines. This particular camshaft, part number 146-458-11, is a hydraulic roller type designed for GM Gen IV engines that do not have Variable Valve Timing (VVT) or Active Fuel Management (AFM). It’s a popular choice for those looking to improve their engine’s performance for street and strip applications, offering a wide operating range.

The LSR 227/243 grind features a 227-degree intake duration and a 243-degree exhaust duration at 0.050 inch lift, with 0.617 inches of intake lift and 0.624 inches of exhaust lift. These specifications are carefully chosen to provide a noticeable increase in power and torque, especially in the mid-to-upper RPM range, without making the engine difficult to drive on the street. This camshaft fits a range of GM vehicles, including models like the Cadillac CTS, Chevrolet Camaro, and Pontiac G8, among others. It’s designed to work with the factory 1-bolt camshaft timing gear, simplifying installation for many LS engine builds.

When installing a camshaft like this, it’s important to ensure you have all the necessary supporting components. This includes checking your valve springs, pushrods, and timing set to make sure they are compatible with the camshaft's specifications. While this camshaft is designed for improved performance, it is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for detailed guidance.