Adding real horsepower without tearing your car down to the firewall is not a fantasy. With the right mix of tuning, airflow, fueling and exhaust work, it is possible to unlock serious gains while ...

A dyno test showed dangerously low oil levels can produce a 10 percent horsepower bump in an LS V8—for one run, at least. It’s Sunday, Sunday, Sunday, and do I have an offer for you! No, it’s not ...

Turbos and superchargers have made extra power almost easy to come by. Thanks to them, even tiny four-cylinders can make the type of numbers that used to be reserved for big-displacement engines. That ...

With thousand-horsepower production cars—both gas-powered and electric—hitting the streets in significant numbers, some hot rodders have been left scratching their beards about what to do, making this ...

The 7.3 Power Stroke turbodiesel has become an iconic engine that's considered by some to have heavily influenced diesel design. The 1994 Ford Super Duty was the first to showcase the 7.3-liter Power ...