To modify a car’s camshaft(s) often shortened to “camming” a car refers to the process of either replacing the existing camshaft(s) with performance-oriented versions or modifying the existing component(s) through grinding or re-profiling. The camshaft is a critical engine component responsible for controlling the opening and closing of the engine’s intake and exhaust valves. For example, installing a camshaft with a more aggressive lobe profile will typically result in the valves opening further and for a longer duration.
This modification is undertaken to improve engine performance, specifically increasing horsepower and torque. The altered valve timing allows the engine to breathe more efficiently, allowing for greater airflow and, consequently, increased combustion. The practice has roots in motorsports, where maximizing engine output is paramount. Historically, modifications to these components were a key aspect of increasing the competitiveness of racing vehicles. Benefits can include noticeable gains in power at specific engine speeds, enhancing acceleration and overall driving experience.