The pushrod engine is literally a century-old design, giving way to more modern turbocharged ones. But pushrods can still ...

What we refer to today as the LS family of engines usually refers to the third and fourth generations of Chevrolet’s small-block V8. But to understand the relevance of these engines, and what makes ...

When you think about it, everything in the valvetrain between the camshaft and the valve is little more than a high-tech telephone line. All the parts and pieces-the springs, the retainers, the ...

Cadillac's Northstar V8 engine was meant to change the manufacturer's fortunes in the 90s after losing market share to ...

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.

Correctly viewed, a pushrod engine's valvetrain assembly stands at the gateway of improved power. It is not a collection of components only intended to time and provide the correct valve motion.

The Evolution Big Twin-engined motorcycles like Fat Boys and Road Kings spent 18 years using a single four-lobed camshaft, while the Sportster's Evolution motor — and its ancestors like the K-model ...