The job of a camshaft is to open and close the valves at the proper time to fill the cylinders before combustion and vacate them afterward. That sounds simple, but how this job is accomplished greatly ...

Even the most seasoned engine builders usually feel uncomfortable when conversation drifts to the intricacies of camshaft design. Surprisingly, the common termsduration,lobe separation angle, and ...

In the early days of high- performance engine building, hot rodders discovered that when they squeezed the intake and the exhaust lobes closer together, the engine responded with more power. That ...

Airflow in and out is what building horsepower is all about. Every month we attempt to deliver a killer airflow engine combination and uncover the mystery of a particular performance part. This month ...