Engine performance is like a complicated formula in which each individual part plays a role in the final answer. Some parts of the formula affect the final outcome more than others. The valvetrain ...

If you own a 1968-'93 carbureted or EFI Ford 5.0L and want 17 more horses, here's the ticket for a lazy Saturday afternoon. It's an easy, low-cost modification that really works and does not hurt ...

Any gearhead worth his or her salt knows that whether it's a SOHC, DOHC, or OHV engine, the camshaft is considered the brain of a four-cycle internal combustion power plant. The camshaft's profile ...

Have you ever noticed that some engines just seem to run better and make more power than others? Often, it can be attributed to what might be considered an insignificant detail. Take the lowly stamped ...

Drag racers have been searching for tricks to gain horsepower since day one, and there are lots of ways to do it without spending a tremendous amount of time or money. One of the biggest downfalls of ...