Though it was a full-size coupe, the new Grand Prix was transformed into one of Pontiac's first muscle cars months after its introduction when the GM division added the 421 Super Duty engine to its ...

Introduced in 1960, the Super Duty V8 engine turned the Pontiac Catalina into a worthy NASCAR and drag-racing competitor. In 1962, Pontiac debuted a larger, 421-cubic-inch (6.9-liter) version of the ...

Chad has been a muscle car and classic truck lover since he could walk. The classic vehicles from the '60s and '70s are the best in his eyes, but he is more than willing to give the new technology a ...

To most hobbyists, the term "421 Super Duty" conjures up thoughts of a stripped-down Catalina ruling the high banks of Daytona or the finish line of the nearest dragstrip. But rarely is the engine ...

Pontiac made more than its share of classic muscle cars during the brand's run from 1926 through 2009, including the classic GTO. Two Pontiac badges that don't often get listed with the GTO, Firebird, ...

Pontiac is one of those brands that muscle car enthusiasts will inevitably talk about when they start discussing the American muscle car movement. With iconic builds like the aptly-named GTO, Firebird ...