The illustrious Can-Am series proved a tough nut for Ford to crack. Over a several year period, most types of Ford V-8s were tried-DOHC Indy engines, 351s, 427s, and yes, Boss 429s. Actually the 429s used a specially cast aluminum block, enabling bigger bores, and some 494 cubic inches. Mario Andretti drove a variety of Can-Am Fords, including this Holman and Moody 477-inch entry at the 1969 race at Riverside. He finished Third, which was as good as it got for the Boss in this form of racing.