The Mustang Boss 302 is a high-performance 302 cu in (4.9 L) H.O. V8-powered variant of the Ford Mustang originally produced by Ford in 1969 and 1970. Developed to meet homologation requirements to compete in Trans Am racing, it was Ford's response to the success of the Chevrolet Camaro Z/28 in the 5 L (305.1 cu in) and under SCCA series since 1967. While substantial modifications were required to the stock Boss 302 to be competitive on the track, many thousands were sold to the public in a street-legal form that included a refined high-performance motor and upgrades to the suspension and brakes over base Mustangs.
Ford offered a big-block sibling to the small block 302, the Boss 429, also produced in only 1969 and 1970. It revived the Boss 302 name for another two year production run in 2012 and 2013.
