COMP Cams Camshaft Kit CB XR300H-R10

When you're looking to get more out of your Chevrolet Big Block engine, this complete camshaft kit from COMP Cams is a solid option. This kit, part number K11-444-8, is designed for the Xtreme Energy XR300H-R10 hydraulic roller camshaft and includes everything you need to get the job done. You'll receive the camshaft itself, a full set of hydraulic roller lifters, valve springs, retainers, valve locks, and valve stem seals. It also comes with a timing chain set to ensure your engine's timing is spot on, plus assembly lube and decals for a clean installation. This kit is intended for use in Chevrolet Big Block 396-454 engines that originally came with flat tappet camshafts, and it fits a wide range of vehicles including the Chevrolet Impala, Chevelle, and C10 Pickup from the late 60s through the mid-80s.

This XR300H-R10 camshaft is built for performance, specifically targeting pro street and bracket racing applications. It works best with engines that have a compression ratio of 10:1 or higher and a torque converter with a stall speed of 3500 RPM or more. To really let this camshaft breathe, you'll want to pair it with a good intake manifold and headers, which are essential for maximizing airflow. The hydraulic roller design means you get improved performance and durability compared to older flat tappet designs, without the need for frequent adjustments.

Installing a camshaft kit like this is a significant upgrade for your engine. It's a job that requires careful attention to detail, so be sure to follow the included instructions closely. COMP Cams is a well-known name in performance engine parts, and this kit is a comprehensive package designed to help you achieve noticeable improvements in your engine's power and responsiveness.