The engines of yesteryear were pretty simple, with tappets clackity-clacking away on cam lobes, opening valves, and making a ruckus while doing it. Mechanical lifters were adequate for valve operation ...

Engines are incredibly complex. They are made out of thousands of different parts, exposed to high temperatures, and have lots of moving parts. This leaves many potential pain points an engine can ...

Owners of 5.7 and 6.4 Hemi V8s are not imagining things when they hear that sharp tick at idle or face a four-figure repair bill long before the odometer suggests a major overhaul. The pattern of ...

I'm building a 383 Chevy small-block for general street and strip use and have come to the point where it's time to select a cam. My question isn't as much about which cam to go with but rather what ...

In a world without limits, camshaft designers have known for decades what profiles they'd like to grind. But real-world technological limitations-in terms of design feasibility, materials science, and ...

A federal judge has sent 17 plaintiffs in a class action lawsuit against GM to arbitration. The plaintiffs were part of a class action lawsuit against GM that alleges a malfunction in the automaker’s ...