Andrews Products grinds its cams with the help of a computer with cam design capabilities. This superior technology gives the utmost in both performance and reliability. Only the best alloy steel billets and heat-treating processes are utilized. Furthermore, the power in Harley's Evolution engines can be made even more convincing when a superior Andrews computer-designed high-performance cam is installed. These hydraulic lifter cams are capable of 6000-plus rpm with stock springs and no valve float. Made in the U.S.A. Basically an EV27 cam with timing set for superchargers or big-inch motors with 10.5+ compression ratio Super power for supercharged engines Must check coil bind, valve-to-valve clearance and valve-to-piston clearance.. CAM EV31 EVO
