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 ...

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 ...

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?

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 ...

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 ...

In Part 1, we introduced you to some of the dedicated engine engineers and scientists who worked on moving Pontiac out of the world of the straight-six and straight-eight and into the future of the ...

As I gather bits and pieces for my 1941 Plymouth Special Deluxe sedan project, it becomes harder to ignore the lack of a modern engine to replace the Chrysler flathead six that came with the car. I ...