Ford fans do not argue about much more fiercely than they do about pushrod versus modular V8s, because that split defines not just different engines but different eras of Mustang and truck performance ...

Ford pushrod V8s served many a driver for decades in a veritable buffet of displacements from 1952 through 2001 (until Ford brought them back for the 7.3-liter Godzilla in 2020). In the early 1990s, ...

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

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 ...

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 ...

The rocker arm employs the use of a fulcrum or pivot to increase the cam lift by a given ratio. That increase in lift is the result of moving the pushrod pivot point closer to the fulcrum. That ...

Victor is a Mechanical Engineer and certified auto mechanic from Portugal. He specializes in automotive technology and maintenance. His articles are informational and educational, bringing to light ...

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