In 1996, Chevrolet added Vortec heads to their 5.0L and 5.7L V-8 engines. This top end makeover also brought a redesigned fuel delivery system known as a Central Sequential Fuel Injection (CSFI) ...

American publisher Charles Knight was not at all impressed with his new 1901 Knox ‘gasoline runabout’. Like some other cars of the era, its four-stroke engine relied on a single valve to permit both ...

That alone reduces emissions and increases engine longevity. The rotary valve also means that the blockages caused by conventional poppet valves are not an issue as poppet valves are not needed in ...

Every aspect of an engine is a compromise: torque for horsepower, efficiency for emissions, performance for fuel economy, compression for octane tolerance. During the evolution of the internal ...

For those of you who haven’t spent much time around the Power Stroke name, the first 14 years of its production (the 7.3L and 6.0L) utilized a hydraulically activated, electronically controlled, unit ...

Sleeve Valve Engine The sleeve valve engine is an intriguing alternative to the poppet valve engine, using a rotating or sliding sleeve to control the engine’s intake and exhaust. This design was ...