Speed-O-Motive is known for building strong performing, reliable engines, and the engine they entered in this year's contest was no exception. Rather than build a purpose-built dyno mule, they decided ...

The 1971 Plymouth Duster 340 was a great example. With bright color options, heavy-duty drivetrain components and a stirring ...

Though not powered by mighty big blocks like the legendary 426 HEMI, these five Mopars became muscle car icons thanks to their potent small-block V8s. During the golden age of muscle cars, Mopars ...

Straight off the bat, it's the engine sizes. The Mopar 383 V8 displaces 383 cubic inches (6.3 liters), sitting between the 340 (5.6 liters) and 440 (7.2 liters). The 340, 383, and 440 all are part of ...