A small gap with big importance in the performance and health of an engine - here's everything you need to know.

To celebrate HOT ROD's 75th anniversary, we teamed up with CASTROL GTX to bring you some of the stories that exemplify the core of what HOT ROD is and reflect the brand's influence on America's car ...

Taking care of your vehicle is vital to ensure it stays in great condition. Your brakes could give you trouble someday, or your suspension could require tinkering, inevitably leading you to an auto ...

Q:I have a 327 in my '31 Ford that features nearly the same cam and components as the one you referenced recently in Pit Stop (Nov. '12). Since a 1.6:1-ratio rocker arm will push the valve a little ...

That alone reduces emissions and increases engine longevity. The rotary valve also means that the blockages caused by conventional poppet valves are not an issue as poppet valves are not needed in ...

The 5.7L LS6 V8 engine is part of GM’s Gen III Small Block engine family, and was briefly produced by General Motors for use in two high-performance vehicles: the C5-generation Chevrolet Corvette Z06 ...

Since the dawn of the internal combustion engine, the search for power has been paramount in internal combustion engine development and advancements over the years. Ranging in all sorts of different ...

Automotive engine technology has advanced many miles since Carl Benz put a one-cylinder gas motor in the Patent Motorwagen, creating the first car ever in the late 19th Century. A couple of decades ...