Close-up of V8 engine with four two-barrel carburetors - Ricky Deacon/Getty Images If there's one question that's forever on the lips of car enthusiasts, it's how much horsepower an engine makes.

There are several types of engine compression testers. Be sure to use the correct type for your specific engine, otherwise ...

We all know the age-old maxim, "There's no replacement for displacement." It's the truth. That's why so many sanctioning bodies use displacement and compression rules to limit engine power. Of course, ...

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 ...

Formula 1 is a game of millimeters, but Mercedes just lost a massive battle over internal engine temperatures. The FIA has ...

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 ...

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 ...