These hydraulic lifter cams are capable of 6000-plus rpm with stock springs and no valve float Designed for modified 80" to 88" motors Very broad powerband to 6000 rpm For use with high lift springs and collars Must check coil bind, valve-to-valve clearance and valve-to-piston clearance. Made in the U.S.A.. ANDREWS EV59 CAM 84-99B-T
