COMP Cams Camshaft CS 47S 290B-6

If you're building a drag car with a Chevrolet Small Block engine and looking for an improved camshaft profile, this COMP Cams CS 47S 290B-6 is a solid option. This camshaft is specifically designed for drag racing applications and features a 4/7 firing order swap, which can help improve cylinder scavenging and overall engine performance. It's built for engines that use a solid flat tappet valvetrain, common in many older Chevrolet V8s.

This camshaft has a duration of 255 degrees on the intake and 266 degrees on the exhaust at 0.050 inch lift. The lift figures are 0.470 inches for the intake and 0.470 inches for the exhaust. These specs are well-suited for maximizing power in a drag racing environment. It's constructed from durable materials to withstand the demands of high-RPM operation. Remember to check your specific engine block to confirm it uses a flat tappet valvetrain, as many later models switched to roller cams.

This camshaft fits a wide range of Chevrolet Small Block engines, including popular displacements like the 350, 400, and 327. It's important to note that this camshaft is not compatible with LT1/LT4 engines, factory roller small blocks from 1985 and newer, or the LS-based engines. Also, 1955-1957 models require a specific oiling groove on the rear journal, which this particular camshaft does not have. Always consult your engine's specifications or remove the timing cover to verify your block's configuration before ordering.