How Much Hp Does A Stage 2 Cam Add

How Much Horsepower Does a Stage 2 Cam Add?

Adding a stage 2 camshaft to your engine is a popular modification for boosting horsepower and torque, but the exact horsepower gains vary considerably depending on several factors. There's no single magic number. This article will explore the variables that influence horsepower increases and provide you with a better understanding of what to expect.

Factors Affecting Horsepower Gains from a Stage 2 Cam

Several key factors determine the horsepower increase you can anticipate from installing a stage 2 camshaft:

1. Your Engine's Baseline:

The horsepower gain is relative to your engine's existing horsepower. A naturally aspirated 4-cylinder engine will see a different increase than a V8. Starting with a higher horsepower engine will result in a proportionally smaller percentage increase.

2. The Cam's Specifications:

Stage 2 cams have a wider range of specifications than stage 1 cams. The duration, lift, and lobe separation angle (LSA) all play a crucial role. A cam with more aggressive specs (longer duration, higher lift) will generally yield more horsepower but could potentially sacrifice low-end torque. The LSA impacts the overall powerband.

3. Supporting Modifications:

To realize the full potential of a stage 2 cam, you usually need supporting modifications. These can include:

• Improved air intake: A cold air intake or upgraded air filter system provides more air to the engine, which the camshaft can now utilize more efficiently.
• Exhaust system upgrade: A free-flowing exhaust system reduces back pressure, allowing exhaust gases to exit more easily, optimizing performance gains.
• Tuning: Proper tuning (ECU reflash or piggyback system) is essential to maximize horsepower and prevent engine damage. The engine's computer needs to be reprogrammed to match the cam's specifications.

4. Installation and Quality:

Incorrect installation can significantly impact performance, potentially negating any gains or even causing engine damage. Ensure a professional mechanic with experience installing performance cams completes the work. The quality of the camshaft itself also influences results.

Realistic Horsepower Expectations

While some claim substantial gains, it's crucial to have realistic expectations. A stage 2 camshaft typically adds 15-30 horsepower to a naturally aspirated engine. However, significantly higher or lower results are possible based on the factors mentioned above. For forced induction engines (turbocharged or supercharged), the gains can be greater but are also highly dependent on supporting modifications and tuning.

Conclusion: Context Matters

The horsepower increase from a stage 2 camshaft isn't a simple answer. It depends on many interconnected factors. Focus on choosing a camshaft appropriate for your engine and driving style, and remember to include the necessary supporting modifications and professional installation for optimal results and to avoid potential engine issues. Thorough research is key before embarking on such a modification.