Diesel engines have long been known for their durability, efficiency, and high torque output. While their popularity has never been especially high in the United States with a few little exceptions, ...

The modern era of mass-market affordable turbocharging began in the 1990s with the arrival of VW and Audi's 1.8 Turbo and 2.7 Twin-Turbo engines. For the first time, manufacturers were talking about ...

The Milwaukee-Eight sits at the top of the Harley engine hierarchy and the biggest one edges really close to the 2,000cc mark ...

In our last installment, we set out to build a really big LS engine. How big? Well, in this case a rather voluminous 490 cubic inches. Yep, that’s big-block cubes in a small LS package. The first step ...

Stall speed is a term often used when describing torque converters. Generally speaking, stall speed is the rpm the engine achieves before the converter attains its coupling speed. In the days before ...

Harley Davidson engines are better known for their low-end grunt and torque rather than for screaming power, and that's by design.

The performance world is full of good tuning ideas. One place that is often overlooked in the search for more power is the exhaust system. For decades, knowledgeable drag racers have been using header ...