While some have advantages over others, these 12 engines have displayed optimal traits for successful tuning.

It has been said that the exhaust emissions from a "typical" classic carburetor-equipped street rod can be as much as 100 times that of a new '10 vehicle. That may be possible if the owner of this ...

While we like to think of 2002 as being part of a high-tech age, our beloved internal combustion engine hasn't really changed much in the last 50 years. We're still using pushrods and overhead valves, ...

For budding car enthusiasts, it's a badge of honor to correctly identify the number of cylinders in an engine just by its exhaust note. The number of cylinders plays a vital role in how an engine ...