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 ...

Here we go again – back to when gas was cheap, cars were pretty, and America was the biggest carmaker on Planet Piston. Not only that, but it made heaps of cool machines every year, icons of the ...

At one point, Oldsmobile created a behemoth of an engine with 32 valves and 455 cubic inches. But regulatory issues meant it ...

As GM grew and flourished along with the U.S. auto industry in the middle of the 20th century, its divisions began building larger engines. Buick was the first automaker to use a V6 engine in a ...

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 ...

Ever hear how no fast cars were built after 1970? That perception existed at one time because General Motors lowered compression on all its motors in 1971, but time has a way of changing perceptions, ...

Oooh, two General Motors V8s within a cubic inch of each other! They have to be nearly the same engine, right? After all, the Chevrolet 454 and Pontiac 455 come from the same corporate parent, and ...

In the Pontiac hobby, there are times we find ourselves trying to separate fact from fiction. Many different engines and models have suffered such a fate, but few are as misperceived as the Super Duty ...

From the November 1969 issue of Hot Rod magazine: Those who appreciate good cars had an eye out for the GS 455. Buick may have the surprise issue in the super-car series this model year. The 400-cubic ...