The 1969 Plymouth Road Runner A12 completed a quarter-mile in 13.0 seconds, making it the fastest 1960s muscle car. The A12 package included a 440 ci V8 Six-Pack engine, 4.10:1 rear axle ...

Midway through the 1969 production year, Plymouth released the 440 big block version of the Road Runner. Known as the powerful 440 Super Commando 6-pack due to its three 2-barrel carburetor setup, the ...