Note: Computer engines require a highly unique lobe profile to be compatible with the vehicles electronic capabilities. The cam specifications for Crane CompuCam camshafts should not be compared to other non-computer controlled cam specs. This cam is for strong mid range improvements in 1987-89 Corvettes Camaros and Firebirds that are factory equipped with 350 TPI engines. Crane CompuCam camshafts have special profiles designed to improve engine performance without sending the computer into fits or causing the stalling surging and drivability problems some computer-compatible cams are known for. Cams are 50-state-legal for the application. Recommended parts: * Lifters: CRN-10530-16 * Valve springs: CRN-99848-16 (standard diameter valve springs no machining required) * Retainers: CRN-99915-16 * Adjustable fuel pressure regulator CRN-99470-1 recommended for maximum performance. This part carries CARB E.O. number D-225-22. 50 state legal for listed applications. Specifications: * Advertised duration: 270 intake/276 exhaust * Duration at .050 in.: 2140 intake/220 exhaust * Gross valve lift: .452 in. intake/.465 in. exhaust * Lobe separation: 112 degrees * RPM range: 2000 to 5500 * For 1987-89 Corvettes Camaros and Firebirds factory equipped with 350 TPI.