COMP Cams Camshaft CS XE256H-10

If you're looking to get more out of your Chevrolet Small Block engine, especially for street use with a carburetor, this COMP Cams Xtreme Energy camshaft is a solid option. It's designed to bridge the gap between a mild street cam and a more aggressive race-only grind, offering a noticeable bump in performance without making your daily driver difficult to manage. You'll find it works well in a variety of applications, from classic Camaros and Corvettes to trucks and custom builds, as long as your engine uses a flat tappet valvetrain.

This particular camshaft, grind number XE256H-10, features quicker opening lobe profiles. This means it can improve throttle response and increase the area under the lift curve, translating to more power and torque, particularly in the low to mid-range RPMs. Despite the performance gains, it's engineered to maintain a smooth idle and provide decent manifold vacuum, which is important for power brakes and emissions equipment. For the best results, COMP Cams recommends pairing this camshaft with their roller rockers and matched valve springs, along with other performance upgrades like an aftermarket intake manifold and headers.

It's important to verify your engine's valvetrain setup before purchasing. Many Small Block Chevys built from the mid-80s onward came with factory roller camshafts, and this flat tappet camshaft will not work with those. Removing the intake manifold or timing cover is usually the best way to confirm if your engine is a flat tappet or factory roller design. This camshaft is not CARB approved and cannot be shipped to California.