Introduced in 1968 as Plymouth's entry-level muscle car, the Road Runner lost its high-compression privileges after the 1971 model year. That's when Chrysler discontinued the 426-cubic-inch (7.0-liter ...

1973 witnessed the debut of a massive restyling for the Road Runner, as Plymouth tried to refresh the car to breathe new life into a model whose sales were dropping. Unfortunately, the carmaker also ...

The Road Runner 440+6 story really begins when Plymouth decided to drop its hottest big‑block into the car as a special package. Released in February 1969, Plymouth offered their potent 440 “Six Pack” ...

Like most things related to the muscle car era, the Plymouth 440 Super Commando big-block V8 engine roared to life in the late 1960s and faded away in the early 1970s. Chrysler produced standard ...

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In the middle of the 1969 model year, Chrysler began offering a three-two-barrel carburetor arrangement, called the Six Pack by Dodge and Six-Barrel by Plymouth, as an option for its 440-cubic-inch ...