These hydraulic lifter cams are capable of 6000-plus rpm with stock springs and no valve float Bolt-in cam for street or touring use with more mid-range and upper-end power than the stock 88 EV cams Uses stock springs; works with carbs or fuel injection Especially effective in reducing oil temperature Must check coil bind, valve-to-valve clearance and valve-to-piston clearance. Made in the U.S.A.. ANDREW EV-13 CAM 84-99EVO