Read about the DCI 455 Pontiac Engine and see pictures of the valvetrain, Ross pistons, lifters, ports, Pontiac manifold, Holly carburetor, and more, inside Popular Hot Rodding Magazine.

Though Pontiac struggled to find its place in the General Motors lineup in recent years -- an issue that ultimately helped hasten its recent demise -- we've always had a soft spot for the GM brand ...

It’s safe to say that most car people, and even a lot of non-car people, have heard of Pontiac. Even though the 84-year-old GM motor division went extinct in 2010, models like the GTO and Trans ...

The stunningly detailed and tidy state of the engine bay, complete with 455 HO decals, makes for a car worth as much on the open market a modern sports coupe.

The Olds and Pontiac 455 engines were both big-block V8s, but they had differing power outputs and development philosophies.

While many classic car manufacturers had two separate engine sizes -- small blocks and big blocks -- Pontiac only had a single V8 platform.

This 455 couldn't match the Super Duty's performance when stock, as its L75 7.4-liter engine was rated at just 250 horsepower when new.

That of course, is this 1971 Pontiac Firebird Formula 455. The first thing that you might notice is that this car is damn good looking.

Read about the DCI 455 Pontiac Engine and see pictures of the valvetrain, Ross pistons, lifters, ports, Pontiac manifold, Holly carburetor, and more, inside Popular Hot Rodding Magazine.

An SD-455 was tested by Car and Driver in May 1973 and was declared, with a certain amount of sadness, "the last of the fast cars." This 455 couldn't match the Super Duty's performance when stock, as ...