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 ...

To celebrate HOT ROD's 75th anniversary, we teamed up with CASTROL GTX to bring you some of the stories that exemplify the core of what HOT ROD is and reflect the brand's influence on America's car ...

An old hot rodding adage is "airflow is everything." Well, if you consider that in its simplest terms--an engine is nothing more than an air pump--then airflow is everything. For years, gearheads have ...

Modern fuel metering systems are designed to reduce fuel consumption and exhaust gas emissions in internal combustion engines to meet future emission legislation limits. The first step to achieve this ...