The Pontiac Trans Am 455 Super Duty arrived just as Detroit was being forced to turn down the volume on big cubic inches, ...

Famously featured under the hood of the 1970 Chevy Chevelle SS 454, the 454 V8 is a big-block engine that helped define the golden age of muscle cars. Very few engines ever came close to the power and ...

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 ...

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.

Building Big BirdTom 455bird via CarCraft.com: I just bought a Pontiac 455 for my '68 Firebird. The car has its original 350, and I'm hoping to slip in the 455. I read "Junker to Thumper" in the June ...

The Pontiac Firebird debuted in February of 1967, built on the same F-body platform as the Chevy Camaro, which had bowed five months earlier. The Firebird was a bit of a consolation prize for Pontiac, ...

The 455 HO was the icing on the GTO cake in 1972, with the engine producing 300 horsepower (this was the net rating, as Pontiac now aligned with the new requirements in the United States for engine ...

For many people out there, the debut of the 455 HO V8 long-stroke engine in 1970 was the Pontiac GTO they’ve been waiting for since 1965 when GM decided that the highest this series could go was 400 ...