COMP Cams Nitrided Camshaft CS280Mhqs7

This is the COMP Cams Nitrided Camshaft CS280Mhqs7, part number 12-526-20. It's a solid flat tappet camshaft designed for Chevrolet Small Block engines, specifically those in the 327 to 358 cubic inch range with around 11:1 compression. This camshaft is well-suited for applications that see a lot of track time with tight corners or heavy track surfaces, like open-wheel modified racing.

The camshaft features a 254-degree intake duration and a 260-degree exhaust duration, measured at 0.050 inches of lift. This profile is chosen to provide a noticeable bump in performance over stock, especially in the mid-range where it matters for acceleration out of corners. The solid flat tappet design is a proven performer for those looking to extract more power from their engine, and the nitriding process adds a layer of hardness to the lobes, which helps with wear resistance and longevity, especially when paired with appropriate break-in procedures.

This camshaft fits a wide range of Chevrolet Gen 1 Small Block engines, but it's important to confirm your specific engine uses a flat tappet setup. Many later model engines, especially from 1985 and newer, came with factory roller camshafts, which are not compatible with this solid flat tappet design. Always check your engine's configuration before installation to ensure proper fitment and function.