"Windsor" engines are Ford 90-degree overhead valve small-block V8s. They were first introduced in 1961 and named after the place of manufacture (Windsor, Ontario), but the term was never officially adopted by Ford. As enthusiasts began using it more regularly, Ford started unofficially naming engines "Windsors" in 1969 to distinguish two 351 CID V8s. Although they had the same displacements, the two motors - one produced in Windsor, Ontario, and the other in Cleveland, Ohio - had very different design setups. Thus, they were designated the 351W (Windsor) and the 351C (Cleveland).