Time was when a valve job was done with some valve-grinding compound and a vacuum cup on a stick. But no more. Today's high performance engines require the same machining precision in the valves that ...

This is a category that is pretty rapidly going away. You'll be hard-pressed to find an overhead valve — also known as a pushrod — engine in anything outside of a General Motors LS/LT V8 or one of ...

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 ...

For many Ford enthusiasts, merely uttering the words modular engine conjures thoughts of complexity and uniqueness. The overhead camshaft design and different-looking cylinder heads have the die-hard ...

Motorcycle.com spotted the patent that was filed in February but only recently published shows definitively that Harley had a new pushrod engine in the works. According to the patent, the company is ...

When it comes to modern internal combustion engines, there are two types that dominate the industry: pushrod and overhead camshaft (OHC). While pushrod engines were the stars of the show for many ...