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 ...

Valve timing is the most important factor determining an engine's character. A good illustration of this is provided by the following curious historical fact. In 1947 the Standard Motor Company of ...

There is so much going on with internal combustion engines (ICEs) these days, it can give you a headache just reading about them. That's why we do the research for you and then cram it into bite-size ...

I have a 355 small-block Chevy in my 1971 Nova and just swapped on a set of used aluminum heads. I was told the heads have 180cc intake runners, 64cc chambers, 65cc exhaust ports, and 2.02/1.60-inch ...

Cam installation stories have been done over and over again in high-performance automobile publications. Many times, however, proper valve timing is never really stressed. Quality cam manufacturers ...