The Valiant Super Bee was equipped with the 318 V8 engine, with 270 hp, from 1970 to 1974; from 1975 to 1976, it contained the 360 V8 engine, with 300 hp—these engines had more power in Mexico than in the US, as Mexican anti-pollution laws were less strict in comparison to the US. Over the years, these models only received minor changes, such as new grilles, rear panels, and tail lights. The first generation was produced from 1970 to 1976; during the fall of 1975, Chrysler introduced the new F Body cars: the Dodge Aspen and Plymouth Volare (as 1976 models), while the Aspen R/T and Volare Road Runner were released as the sports versions.