COMP Cams Camshaft Kit CS XR280HR-11

This COMP Cams CS XR280HR-11X4 camshaft kit is built around a hydraulic roller camshaft with a 230/234 degree intake/exhaust duration. This specific grind is designed to deliver strong mid-range power, making it a popular choice for performance builds on Chevrolet Gen 1 Small Block engines. It's important to note that this cam profile is aggressive and will result in a rough idle, and it requires supporting modifications like headers, 3.73-4.10 rear gears, and a 2500+ RPM stall torque converter to perform at its best.

The SK-KIT includes everything you need to get started: the camshaft itself, a set of hydraulic roller lifters, a complete timing chain set, assembly lube to ensure proper break-in, and decals. This kit is intended for Chevrolet Gen 1 Small Blocks, covering displacements from 262 up to 400 cubic inches. However, it's crucial to verify your engine's configuration, as it does not fit factory roller blocks (typically 1985 and newer, though some trucks and SUVs used flat tappets later). It also won't work with LT1/LT4 or any LS-based engines. For 1955-1957 265 engines, a specific oiling groove on the 5th cam journal is required.

This kit is a solid option for enthusiasts looking to significantly improve the mid-range grunt of their classic Chevrolet V8. Remember that this camshaft is not CARB approved and cannot be shipped to California. Always refer to the included instructions for proper installation and break-in procedures.