COMP Cams Camshaft CS 311Qs10 .900 Base

If you're building a serious stroker engine for your classic Chevy, especially one pushing 420+ cubic inches and looking for maximum performance, this COMP Cams 4-Pattern camshaft is designed to help you get there. This camshaft features a .900-inch base circle, which is crucial for providing extra clearance needed when using a stroker crankshaft with longer connecting rods. It's built for highly modified applications that demand more from their valvetrain, often paired with a high-stall torque converter and upgraded cylinder heads to really unlock its potential.

What sets this camshaft apart is its advanced 4-Pattern lobe design. Unlike traditional cams with a single intake and exhaust profile, this one has unique lobe patterns for the inboard and outboard cylinders. This is a direct carryover from NASCAR technology, designed to precisely optimize valve events based on the varying runner lengths in typical V8 intake manifolds. By ensuring valves open and close at the most effective times for each cylinder bank, it significantly increases the engine's 'area under the curve' and improves stability at higher RPMs, potentially netting you a notable horsepower gain over conventional designs.

This camshaft is CNC-machined from a steel billet core for durability and features a tight lobe separation angle, which contributes to both strong performance and that desirable, aggressive exhaust note. It's important to note that this camshaft is optimized for use with melanized or nitrided distributor gears. Using a standard cast or steel gear without this surface treatment will void the warranty, so be sure to select the correct distributor gear to match. This is a serious piece of hardware for a serious engine build, designed to extract every bit of performance from your Chevrolet Small Block.