A pushrod is basically a metal tube designed to transfer the reciprocating motion of a valve lifter, riding on the camshaft, to the valve. I found the pushrod fascinating 20 years ago, back when I was ...

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.

Pushrod engines may not be high-tech by today's standards, but they soldier on and have benefits of their own. One downfall, however, is their ability to rev. Pushrod engines tend to have rather low ...

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

Back in 1990, a Corvette cost $31,979 and the ZR-1 option added another $27,016. What that bought you, mostly, was the most fearsome engine ever bolted into an American car. Instead of the pushrod, ...

Last month you read about a naturally aspirated Two-Valve engine that gained 28 rwhp without sacrificing any of the car's street manners. The Trick Flow Specialties camshafts made the idle sound ...

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 ...