COMP Cams Camshaft LS1 XR275HR-12

This COMP Cams XR275HR-12 camshaft features a 222/224 degree intake/exhaust duration at .050 inch lift, a popular choice for LS engines looking for improved mid-range and high-RPM power. It's designed as a hydraulic roller camshaft, meaning it uses roller lifters to reduce friction and wear compared to flat tappet designs, allowing for more aggressive lobe profiles and better performance. This camshaft is a solid option for street/strip applications where you want a noticeable bump in power, especially as the engine revs higher.

Built for GM LS Gen III and Gen IV engines, this camshaft is compatible with a wide range of displacements including 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, and even 7.0L variants found in popular vehicles like the Chevrolet Corvette, Camaro, Silverado trucks, and Cadillac Escalade. Because it significantly alters the engine's breathing characteristics, you'll need a compatible engine programmer to adjust fuel and ignition timing for optimal performance and to ensure the engine runs correctly. This is a significant upgrade that changes how your engine performs across the RPM band, making it ideal for those building a more powerful street machine or a dedicated strip car.

When installing this camshaft, it's important to follow the manufacturer's recommended procedures, which typically include using new lifters and potentially valve springs that match the camshaft's lift specifications. This ensures you get the most out of the upgrade and maintain reliability. While this camshaft is designed for performance, it's not CARB approved and cannot be shipped to California. It's a well-built component for enthusiasts looking to extract more power from their LS engine.