Buick’s Century Luxus 455 sat at the crossroads of two eras, combining traditional American luxury with the last, loud gasp ...

Once upon a time, we went to the dyno to test a 455 Pontiac. It all started innocently enough. We wanted a hot street-engine dyno-test story for HPP, so we called Don Johnston at DCI Motorsports in ...

With muscle cars slowly but surely transitioning to electric power, petrolheads love to reminisce about the glory days of massive V8s. However, many seem to forget the glorious 455-ci (7.5-liter) that ...

TO refresh your memory from last issue, the SD-455 that you see before you belongs to HPP contributor Melvin Benzaquen. We were using it as a mule for a fuel-injection swap into his '74 T/A when it ...

How big is one cubic inch? In physical size? Tiny, obviously. Even in terms of engine displacement, which we are about to discuss, a single cubic inch is almost nothing. It's an amount regularly ...

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 ...

Most automotive enthusiasts and historians typically place the classic age of the American muscle car between 1964 and 1972. During this period, the major American automotive manufacturers engaged in ...

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 ...

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 ...