Engineered to keep things low, balanced, and smooth, the Subaru boxer engine might be one of the best-kept secrets in ...

While electric and hybrid power trains are leading in the performance race, when it comes to pure internal combustion engines, you'd think the only way to achieve horsepower heaven would be to get a ...

When Tom Nelson recently posted pictures and a video on Instagram of this unique engine he’d just finished, we knew we had to stop by for a closer look. A cursory glance at those unmistakable valve ...

From the October 1987 issue of HOT ROD: A Super Duty conversion kit that could give your Fiero the kind of performance its styling implied. Pontiac's Super Duty 4-cylinder engine has established a ...

BMW just unveiled the M2 Racing, based on the roadgoing M2 — but instead of an inline-six, it has a four-cylinder engine under the hood. Has BMW gone the way of the E30 M3 and determined that ...

"Here comes the Porsche 3.0-liter inline-four," you might be saying to yourself. Sure, it'll be on this list, but Porsche's uber-four is a weed-whacker engine compared to the ultimate ...