Due to stricter government regulations, the era of unrestrained factory-built performance was coming to an end in 1971. However, GM's excitement division answered with the largest displacement engine ...

The Pontiac Trans Am 455 Super Duty arrived just as Detroit was being forced to turn down the volume on big cubic inches, which is exactly why it still looms so large in muscle car history. Built in ...

At the height of the muscle car craze, the engineering wizards at Oldsmobile created a "Frankensteinesque" big-block V8 with four valves per cylinder that could've become the most iconic American high ...

The Pontiac Super Duty 455 Firebird is a legendary muscle car revered by enthusiasts and collectors alike. Produced during a brief but impactful period in the early 1970s, the Super Duty 455 ...

Engine-build primers are a main component of the technical aspect of HPP. We pride ourselves on furnishing the readership with detailed information that can be used on their Pontiacs. We've covered ...

At a time when most of Detroit has turned away from performance, concentrating on meeting upcoming emission and bumper standards, one auto maker has breathed some fresh life into its engine line-up.