When installing a performance cam, many owners lose the engine’s cylinder deactivation feature. Here’s why you may want to keep it active. Manufacturers of modern V-8 engines have realized that we don ...

How does cylinder deactivation work? When not needed, the system shuts down fuel supply to the cylinders not being used and closes the valves. There are two ways to accomplish this: 1) rocker arm ...

General Motors has filed a new patent that offers a look at how the company may be rethinking cylinder deactivation for its next generation of pushrod engines. The application, published by the U.S.

It has been just over a decade since GM V8 engine technologies like cylinder deactivation and light-weight oils became standard, how have they impacted sales? This question was raised by a recent ...