COMP Cams Camshaft Kit CS XR258HR-11

COMP Cams is well-known for making performance camshafts and valvetrain components that help engines breathe better and make more power. This K-Kit, the CS XR258HR-11, is a complete package designed to give your small block Chevrolet engine a significant boost in torque, especially in the lower to mid-RPM range, while still maintaining good drivability and mileage. It’s a great option for stock engines or those with mild modifications looking for that Xtreme 4x4 feel.

This kit includes everything you need for a comprehensive valvetrain upgrade. You get the camshaft itself, a set of hydraulic roller lifters, matching valve springs, retainers, and valve locks to ensure proper valve control. It also comes with valve stem seals for a complete seal, a timing chain set for accurate engine timing, and assembly lube to get everything installed smoothly. This all-in-one approach means you won't be hunting for individual parts, making the installation process more straightforward. The camshaft profile is specifically tuned for strong torque output, making it ideal for trucks and heavier vehicles, or any application where low-end grunt is a priority.

This kit is designed to fit a wide range of Chevrolet and Buick vehicles from 1987 and newer that use a factory roller camshaft in their Gen 1 small block engines, such as the Chevrolet Astro, Camaro, and Buick Roadmaster. It’s important to note that this kit is not compatible with LT-1 or LS1 style engines. Always refer to the included instructions for the best installation practices, and remember that this part is not CARB approved and cannot be shipped to California.