Stock car racing engines are all about efficiency. That's because all the simple solutions for making power have either been maximized or eliminated by the rule book. You aren't allowed power adders ...

From the archives: Using a stash of parts and an old set of AFR 227 heads, see how this small-block combo got every last bit of power. To celebrate HOT ROD's 75th anniversary, we teamed up with ...

The 4-H Small Engine project creates the education and hands-on opportunity for youth to learn all about engines. In this project youth will identify and discover the function of different engine ...

You've probably heard of two- and four-stroke engines, but what are the four strokes of a gasoline engine? And how do they ...

Small-block V8 engines may not be as brawny or powerful as their big-block counterparts, but they completely revolutionized the car industry. However, since the V8 became a staple American power mill, ...

Increasing an engine’s compression ratio is a proven way of unlocking extra horsepower, but there’s a point of diminishing returns. The team at Garage 54, the Russian mechanics who built a V16 using ...

Compression in a diesel engine is essential for effective and efficient performance. And when compression is lacking, damage can result. That is why it’s imperative to know whether your engine’s ...

You're probably familiar with the standard combustion process that powers most cars, but some engines use a more efficient ...