Chain drive; .574″ int.; .574″ exh. Replacement cams for use in combination with the stock hydraulic chain tensioner system. Compatible with stock length pushrods. Bolt-in for 96/103/110″. All-round performance cam with smooth cam lobes; performance pushrods & lifters recommended but not required. 99-04 TC 88/95 require high lift valve springs. Responds well to head modifications & higher compression ratios.