An engine's displacement dictates power output based on the bore and stroke, while compression ratio influences how strong ...

A computer generated power stroke of an internal combustion engine, following ignition - Pathompong Thongsan/Getty Images When comparing engine specs for nearly any combustion engine automobile, we ...

Low- And High-Compression Fuel Economy Engines: The Techniques Are About The Same, But The Approach To Each Is Somewhat Different. A.Most stock cylinder heads have factory-cut undercuts of the type ...

With every passing day the Mule provides opportunities beyond our original expectations. Since the 467ci engine belongs to HPP editor Tom DeMauro, it is at our beck and call. This affords HPP the ...

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 ...

As we face the end of the internal-combustion era, the straight-six has made an unlikely comeback. Well, unlikely might not be the right word for an engine configuration of such fundamental rightness.

Diesel engines do their hardest work in the toughest jobs, from highway semis to construction equipment, and the reason they can survive that punishment starts with how fiercely they squeeze the air ...

General Motors either has a naming problem or a deep sentimental attachment to the name "LT1". If you walk into a Chevrolet dealership today and ask for an LT1, you are looking at a 455-horsepower ...

Uncover the fascinating story of the saab variable compression engine, a groundbreaking design that never made it to ...

If you don't care much about engine compression ratios, you're a totally normal human being. But hear us out: the other day, we encountered something surprising when poring over the specs of the ...