BRAND NEW PART # 291151 or 494593 or DS199447 Product Features: 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 6,000-plus rpm with stock springs and no valve float. EV51 EVOLUTION CAM Long duration for modified street motors Works with stock hydraulics Easy installation Power range from 3,000-6,500 rpm Fits all 1984-1999 Harley Davidson Evolution Big Twin models (excludes 1999 Twin Cams) Made in the USA Sold individually INTAKE Open (in degrees): 28 Close (in degrees): 44 Duration at .053 (in degrees): 252 Duration at .020 (in degrees): 286 Valve lift: .510 Lift at TDC: .233 EXHAUST Open (in degrees): 54 Close (in degrees): 22 Duration at .053 (in degrees): 256 Duration at .020 (in degrees): 290 Valve lift: .510 Lift at TDC: .195