Got a cam or valvetrain-related question? We want to hear it! Choosing the right cam and matching valvetrain parts are a key ingredient for wringing maximum power out of an internal combustion engine.

With the short block assembled for our 383 supercharged project motor, it's time to shift our attention once again; this time to the heads and valvetrain. Like the rotating assembly, when it came to ...

Desmodromic valvetrains allow for higher revs without needing to worry about valve float. So why do automakers not often use ...

If there is one performance limitation to hydraulic roller lifters it is the maximum rpm capability they can maintain in race applications. The internal hydraulics of standard roller lifters are ...

This installment of Toyota's Engines 101 series takes a closer look at one of the most critical parts of an engine: its valvetrain. The video establishes what parts comprise a valvetrain, looks at ...

Managing your valvetrain is just as critical, especially if you're running something much larger than the stock cam. We looked at several things in our SpinTron test, one being our '04 combination. We ...

GMC Sierra owner Jacob Van Den Top reports lifter failure on his 6.2L V8, challenging GM’s claims that the valvetrain issues ...

Eaton’s valvetrain portfolio for diesel off-highway vehicles now features cylinder-deactivation (CDA) technology that allows for variable valve actuation with hydraulic lash adjustment (HLA) ...

An internal combustion engine, at its core, is similar to a giant air pump. To produce power, it sucks in fresh air and fuel, compresses that mixture, and then explodes it, before expelling the burnt ...