Ford 351C 351M 400 Ultimate Cam Kit High Performance Street with Springs Retainers,Locks, Gaskets and Timing Kit. (351C 351M 400) Camshaft - Single Pattern design - hyd flat tappet 16 premium lifters - hyd flat tappets 1800-5800 rpm 16 valve springs Double roller timing set with 3-key way crank sprocket Gaskets for cam change - cam change kit - no valley pan intake gskt 16 chrome moly valve spring retainers - chrome moly hardened