A small gap with big importance in the performance and health of an engine - here's everything you need to know.

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.

This diagram shows the major cam events through one full cylinder cycle (two crank revolutions or 720 degrees), beginning at TDC firing. The exhaust lobe and valvetrain is closer to the front, and ...

It's been all the talk on internet forums, club meeting hangouts, and in enthusiast garages across the nation—the loss of zinc and other protective "barrier" chemicals in modern oil damaging ...

A class action lawsuit filed against GM over alleged faulty lifters in certain V8 engines has still not received class action ...

The camshaft has to be one of the most complex subjects in car tuning. But what do cams actually do? We’ll be answering that and everything else you need to know about them in this guide. Well, to put ...

We’ve offered serious cam discussions in the past; however, this month’s How It Works takes it to a whole new level. Cam tech is indeed a complex science, but the typical hot-button itemslike how ...