Last month's "How It Works" story gave you the basics of the four-stroke cycle, describing the motion of the intake and exhaust valves in relation to the piston moving up and down in the cylinder.

The job of a camshaft is to open and close the valves at the proper time to fill the cylinders before combustion and vacate them afterward. That sounds simple, but how this job is accomplished greatly ...

Retarding cam timing does the opposite. So the engine’s powertrain control module evaluates multiple inputs from sensors (crank, cam, temperature, mass air flow, throttle position, etc.) and varies ...

When selecting the perfect cam to match your performance needs, prospective buyers face the daunting task of choosing from 260-, 270- and 300-degree duration camshafts. What does it all mean and is ...