"Dyno verified" can mean different things, depending on which dynamometer that car was rolling atop.

Chevy once built a factory car so fast it had to be pulled from the streets. With its rare big-block heart, it ran 10s in the ...

Dynamometer tests are used to measure a car's torque and rpm response. But how do they get that information? And how reliable is what they get?

In this episode of Spare Parts, we take Jon’s classic British sports car to Eclectic Motorworks for his first-ever dyno ...

Four California dynos tested the same Mustang Dark Horse and couldn't agree on what Ford's 500 hp claim means at the wheels ...

At one point, Oldsmobile created a behemoth of an engine with 32 valves and 455 cubic inches. But regulatory issues meant it ...

American engines are some of the most powerful ever made, with U.S.-based automakers seemingly in pursuit of ever-higher ...

After wiring fixes, new ECUs, and a mild nitrous setup, Cleetus McFarland’s twin-engine truck now makes 410 horsepower and ...

Buying a quality used car can be challenging enough, but choosing one that has been modified presents an entire new set of things to look out for.

Ariel says the goal was to "eclipse supercar performance on track." It does that, starting with its very special Honda heart.

How Toyota's blank-check engineering project created two of the most legendary and reliable V-8 engines ever built.

All these horsepower terms can be confusing as you're trying to compare cars. And then there's automakers' habit of lying ...