The COMP Cams CB 280H-10 camshaft is aimed at street machines that use headers and 9:1+ compression. In larger 396–402 c.i. engines it prefers a 2,500+ rpm stall converter and lower axle gearing to realize its gains. Expect a rough idle characteristic typical of its profile. Also note that certain 1965–66 BBC 396 engines with a rear-journal oiling groove may require a different cam.
COMP Cams Camshaft CB 280H-10