COMP Cams Camshaft Kit CS XR270HR-11

The COMP Cams CS XR270HR-11X4 camshaft kit is built around a hydraulic roller camshaft with a 220/224 degree intake/exhaust duration. This setup is designed to give your Chevrolet Gen 1 Small Block engine a noticeable idle and good mid-range power. It’s a popular choice for those looking to wake up their engine, especially in applications like trucks and muscle cars from the 1980s and early 1990s, such as a Chevrolet C1500 or a Camaro.

This kit includes everything you need to get started: the camshaft itself, a set of hydraulic roller lifters, a timing chain set, assembly lube, and decals. For this camshaft to perform at its best, you'll want to pair it with headers, a gear ratio between 3.55 and 4.10, and a torque converter with a stall speed of 2000 RPM or higher. It’s important to verify your engine’s setup, as GM gradually introduced roller camshafts from the mid-80s onward. Removing the intake manifold or timing cover will confirm if your block is factory roller-ready or requires a flat tappet cam setup. This kit is specifically for flat tappet blocks or those being converted to roller setups.

This kit fits a wide range of Chevrolet Gen 1 Small Block engines, including popular displacements like the 350, 305, and 400 cubic inch V8s. It's a substantial upgrade for vehicles like the Chevrolet Caprice, Buick Roadmaster, and AM General Hummer from the specified years. Please note that this camshaft is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's instructions for proper installation and break-in procedures.