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.

When it comes to upgrading small-block engines, camshafts are a popular choice for enhancing performance. Different camshaft types can significantly alter how an engine breathes and performs, offering ...

Camshaft and valve timing events must surely seem like a bunch of monkey motion on the surface. However, there is a motive and madness to how camshafts are engineered and, more specifically, how ...

Most Mustang owners want crisp low to mid-range torque, good throttle response, some semblance of fuel economy, and a Mustang that sounds cool. Of course, some want that “rumpity-rump” idle and the ...

Your car's camshaft — or camshafts if your vehicle has a DOHC engine — is a vital component that plays a critical role in the internal combustion process. Its job is to synchronize the opening and ...

Decades ago (OK, half a century or more), there was a product advertised in many of the performance magazines called the Varicam. The idea was a set of springs attached to a centrifugal device that ...