COMP Cams Cam & Lifter Kit LS1 XR277HR

COMP Cams is well-known for performance valvetrain components, and this XR277HR hydraulic roller camshaft and lifter kit is a prime example of their expertise for GM LS engines. This kit is designed for street and strip applications, offering an improved powerband for enthusiasts looking to get more out of their LS-powered vehicle. It’s specifically engineered to work well with a FAST LSX intake manifold, and you will need a programmer to adjust engine parameters after installation.

This kit includes the camshaft, a set of lifters, assembly lube to ensure proper break-in, and decals. The XR277HR grind features a 224-degree intake and 228-degree exhaust duration at .050 inch lift, with a .571-inch intake and .571-inch exhaust lift. These specifications are tailored for 4.8L through 7.0L LS engines, including popular variants like the LS1, LS2, LS3, LS6, and LS7, as well as many truck and SUV applications. It’s a well-built option for those seeking a noticeable increase in performance.

This camshaft and lifter kit fits a wide range of GM vehicles, from the Chevrolet Camaro and Corvette to trucks like the Silverado and SUVs like the Cadillac Escalade. Remember that this kit is not CARB approved and cannot be shipped to California. You'll also want to refer to the manufacturer's instructions for proper installation and break-in procedures.