Despite the GM 454 and Pontiac 455 being within a cubic inch of each other, and both being GM brands, the two engines are ...

Only 2,116 Trans Ams were built in 1972, making this specific Pontiac 455 HO example a cornerstone collector's piece ...

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 ...

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 ...

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 ...

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 ...

Big Block Olds 455 Oiling Explained” provides a detailed look at the lubrication system of the classic Oldsmobile 455 engine. The video breaks down how oil circulates, critical points for proper ...

A restored and customized 1973 Oldsmobile 442 takes center stage, complete with a strong 455 engine note. How does classic design blend with modern upgrades?