General Motors has filed a new patent that offers a look at how the company may be rethinking cylinder deactivation for its ...

Ford fans do not argue about much more fiercely than they do about pushrod versus modular V8s, because that split defines not ...

Ford used pushrod V8 designs for many years before phasing them out in favor of Modular engines. Here are the differences ...

GM has filed a patent application a variable displacement valvetrain system with rocker shaft porting and insert sleeves for ...

Less than 70k miles in, a Ford Godzilla V8 shows rust, scored bores, and a ruined cam, highlighting known issues with the modern pushrod design. Yet reports of spark plug and lifter failures have ...

One of the most overlooked areas within the valvetrain for a performance engine is pushrod length. Veteran enthusiasts may scoff at this because, back in the day, you just dropped in a set of stock ...

In the valvetrain of your typical pushrod engine, the rocker arm is a critical component that also is an excellent tuning device. To properly tune with rocker arms, though, you need to understand how ...