More than a year ago, I purchased a new GM 350ci crate motor (PN 10067353). No oil gets to the rocker arms on the right-hand passenger side. There's plenty of oil on the driver side, and the ...

Last month's "How It Works" story gave you the basics of the four-stroke cycle, describing the motion of the intake and exhaust valves in relation to the piston moving up and down in the cylinder.

In the pre-LS era, a typical small-block-powered street car would rev willingly to around 5,000 rpm. You could assemble a cam package for it—even using heavy components—and you probably wouldn't have ...

At its most basic level, an engine is an air pump. Internal combustion engines breathe fresh air and expel wasted exhaust gases to make power. Something has to tell those intake and exhaust valves ...

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 ...

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) ...

One way to improve diesel engine performance and to reduce emissions is improving power density and combustion cycle efficiency. It can be done by increasing combustion pressure and engine speed ...