The Ford Racing double-roller timing chain set for 302–351W engines includes a full roller chain, steel cam sprocket option, and a 9-position crank sprocket that provides stock plus four advanced and four retarded timing choices. Built for reliability in performance engines, most sets use cast-iron sprockets while some include steel cam sprockets for extra strength. It ships as a complete timing chain and sprocket kit.
Ford Racing 302-351W Double Roller Timing Chain Set