Pontiac’s 421 Super Duty V8 has a marvelous story to tell. This is what it meant to the industry at the time and how its ...

Powered by a 421-cubic-inch V8 rated at 405 horsepower, the 1962 Pontiac Catalina Super Duty was essentially a factory race ...

The Pontiac 421 Tri-Power was a standout engine during the golden age of muscle cars, known for its impressive performance and unique design. Enthusiasts and collectors continue to admire its ...

When talking about Pontiac muscle cars, we usually think about the GTO. It's regarded as the vehicle that kickstarted the muscle car market. However, Pontiac built an even more exciting rig years ...

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, ...

Last month HPP introduced to the readers a '64 421 H.O. Tri-Power engine buildup being performed by Jim Taylor. The goal of the project is to try and find 100 additional horsepower in a cast-iron ...

Pontiac's long run as an automaker began with the Six in 1926 and lasted through 2009, when the brand became a casualty of GM's bankruptcy proceedings. During its heyday, Pontiac produced potent and ...

Last month HPP introduced to the readers a '64 421 H.O. Tri-Power engine buildup being performed by Jim Taylor. The goal of the project is to try and find 100 additional horsepower in a cast-iron ...