A stage 2 camshaft upgrade modifies valve timing and lift, increasing an engine’s horsepower and torque output, particularly at higher RPMs. This typically involves more aggressive lobe profiles compared to a stock or stage 1 camshaft. The power increase varies depending on the specific camshaft profile, engine displacement, and other modifications. For instance, a V8 engine might gain 50-75 horsepower, while a smaller four-cylinder engine could see a 20-40 horsepower increase. It’s crucial to remember these are estimates, and actual results can differ significantly.
Enhanced engine performance is the primary benefit of this modification. By optimizing valve timing, a stage 2 camshaft improves airflow into and out of the combustion chamber, resulting in more power. This can lead to faster acceleration and increased top speed. Historically, camshaft upgrades have been a cornerstone of engine tuning, allowing enthusiasts and racers to extract more power from their engines. Choosing the right camshaft is critical, as improper selection can negatively impact driveability and reliability.