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.

Pushrod engines typically use two valves per cylinder, and as a result this engine style is often mocked when used in modern vehicles. Fewer, larger valves results in more reciprocating mass which can ...

Even with all of its blunders over the years, one thing about General Motors that we can't really fault is its lineup of small block V8 engines. These engines have been especially central to Chevy's ...