In automotive terminology, the modification of an engine by installing an aftermarket camshaft or multiple camshafts is a practice frequently referred to using a specific adjective. This modification alters the engine’s valve timing, which controls when the intake and exhaust valves open and close. For example, an engine can be modified to improve its performance at higher revolutions per minute by fitting components that alter valve events.
The significance of this modification lies in its potential to dramatically increase engine power and torque. By optimizing valve timing, the engine can breathe more efficiently, allowing for greater airflow and improved combustion. Historically, this type of engine work was primarily the domain of racing teams, but has increasingly become a popular performance upgrade for street vehicles. The selection of suitable components requires careful consideration of the engine’s intended use to maximize gains while maintaining reliability.
