Ever wondered what people are talking about when they say "dual overhead cam"? Don't worry, because we're here to explain it ...

Pontiac’s overhead-cam Firebird Sprint occupies a narrow but fascinating slice of muscle car history, combining a ...

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.

They look harmless enough, but cams are some of the most complicated parts of your engine. In simple terms, cams are long, cylindrical-shaped shafts containing several irregular-shaped lobes that ...

Overhead-valve internal-combustion engines, in which the valves are located in the cylinder head and actuated by a block-mounted camshaft via pushrods, go way back in automotive history. Production ...