COMP Cams Cam & Lifter Kit CB XR300HR-1

This COMP Cams hydraulic roller camshaft and lifter kit, specifically the XR300HR-1 with XE 248/254 lobe profiles, is built for Chevrolet Big Block engines like the 396, 427, and 454. It's designed for applications demanding more power, such as pro street builds and bracket racing, where a 10:1 or higher compression ratio, a 3500+ stall speed torque converter, and good intake and header systems are typically used. This kit replaces your original flat tappet camshaft and lifters with a more efficient hydraulic roller setup, which reduces friction and allows for more aggressive valve events.

The kit includes the camshaft, a full set of hydraulic roller lifters, assembly lube to ensure proper break-in, and decals for your engine bay. The XE lobe technology used in this camshaft is known for providing a broad power band and improved performance over stock cams. It’s a well-built component intended to raise the performance ceiling of your Big Block Chevy, offering a noticeable difference in throttle response and overall power output when paired with the right supporting modifications.

This kit is a significant upgrade for enthusiasts looking to extract more performance from their Chevrolet Big Block. It’s important to note that this camshaft is not CARB approved and cannot be shipped to California. Ensure your engine is set up to handle the increased demands, including appropriate compression, ignition timing, and fuel delivery, to get the most out of this performance camshaft and lifter kit.