COMP Cams Camshaft Kit CS XR286R-10

COMP Cams has built a reputation for making serious performance engine parts, and this Xtreme Energy solid roller camshaft kit is a prime example. If you're working on a Chevrolet Small Block Gen 1 engine and looking to significantly boost its performance, this kit is designed for you. It’s a solid roller setup, which means it’s built for higher RPMs and more aggressive valve lift compared to traditional flat tappet cams. This kit is particularly well-suited for weekend warriors that see a lot of action, especially when paired with a torque converter that has a 3000+ stall speed, a good intake and exhaust system, and lower rear-end gears to keep the engine in its power band.

This SK-Kit comes with everything you need to get the job done right: the camshaft itself, a set of lifters, a complete timing chain set, assembly lube to ensure proper break-in, and even some decals and instructions. The camshaft features a 248-degree intake and 254-degree exhaust duration at .050 lift, with a .630” intake and .630” exhaust lift, making it a potent upgrade for engines like the 350, 400, or even the smaller 265 and 283 cubic inch variants. It's important to note that this kit is specifically for blocks that use a flat tappet camshaft. GM started phasing in factory roller camshafts in the mid-80s, so you'll need to confirm your specific engine's configuration, especially if it's a 1985 or newer 305 or 350. This kit will not fit LT1/LT4 or any LS-based engines.

For engines built between 1955 and 1957, specifically the 265 cubic inch models, you'll need to ensure the 5th cam journal has an oiling groove. If you're unsure about your engine's setup, it's always best to remove the intake manifold or timing cover to verify whether you have a factory roller or a flat tappet block. This kit is a substantial upgrade that requires supporting modifications to truly shine, so be prepared to address your intake, exhaust, and gearing to match the camshaft's aggressive profile.