Have you heard? The old rules about cylinder-head flow are changing. It's not strictly about airflow anymore. If you're serious about making horsepower or at least knowing what the big dogs are doing ...

Discussing port volumes as a measure of evaluating potential engine performance. Over time, we've used this column as a forum to discuss various aspects of engine air flow. One topic we've not ...

Wet flow testing has moved in and out of the realms of mainstream power topics many times during the last 40 years. Like many aspects of race engine development that are a step aside of normally ...

The field of engine design requires a wide variety of parameters to show the performance of an internal combustion engine. A very popular way to do so throughout the industry is with the use of a flow ...

If an engine’s induction system is only as good as its weakest link, then a set of 400-cfm cylinder heads, giant intake valves, and mega-flow carburetors don’t mean squat if they’re getting choked ...