A novel intake manifold design shares pressure between both banks of the engine, giving it more consistent performance.

Positive Crankcase Ventilation—three dirty words, but do they really need to be perceived that way? In general, the PCV system has two main functions: vapor relief and liquid separation. PCV systems ...

A Note from Jim: The stated objective of this story is to introduce you to some notions that may be of imme-diate help to circle track engines operating under rules that allow non-OEM parts. It is ...

Cold air intakes are a favorite upgrade for car enthusiasts seeking more power, sharper throttle response, and a better engine sound. By pulling in cooler, denser air from outside the engine bay, they ...

Mike has been an automotive writer since 2007. He’s also the author of a 32,000+ word ebook on the inner workings of cars, suspensions, and engines, with 2 chapters on quick and easy performance ...

Ask any Vette owner to choose between two particular performance components, and chances are he'll opt for the one that makes more power. While this logic may appear sound prima facie, the reality is ...

There's no disputing that a decent shaker hood is a stylish item that helps a performance car stand out, but it's more than that. A shaker hood also provides a minor performance gain over a stock ...