Cylinder-head port design and modification has been a source of speculation for as long as there have been internal combustion engines. Because engines are power-making air pumps, airflow volume and ...

You understand the importance of getting a good air/fuel charge into thecombustion chamber. It's not just quantity; it's also velocity and ahomogenous air/fuel mixture. To get that, you have invested ...

Enthusiasts seem to be divided on just what constitutes a real street motor. On one side, we have the daily driver camp, where “street” is defined as the motor used to power your daily driver, as in ...

Mopar Performance has been in the aluminum head market for quite a few years now with their Stage VI variations, which deliver the one-two punch of more power and lighter weight. The Stage VI heads ...

ONE of the many problems confronting the engine designer is that of selecting proper port dimensions. As a general rule, it appears desirable to keep the ports as small as possible. This procedure ...