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When it comes to performance upgrades for classic muscle cars, aftermarket headers are often a hot topic among enthusiasts. This article delves into the worthiness of aftermarket headers, specifically testing the Hooker Competition Headers on a Chevy Chevelle SS, and whether they can deliver a significant horsepower increase.
Understanding Aftermarket Headers
Aftermarket headers are designed to replace the factory exhaust manifolds, allowing for better exhaust flow and improved performance. They are typically made from materials like stainless steel or mild steel and come in various designs, including long tube and shorty headers.
Benefits of Upgrading to Aftermarket Headers
Upgrading to aftermarket headers can provide several benefits to your vehicle’s performance:
- Improved Exhaust Flow: Aftermarket headers can reduce back pressure, allowing the engine to expel exhaust gases more efficiently.
- Increased Horsepower: Many enthusiasts report noticeable horsepower gains after installing aftermarket headers.
- Enhanced Sound: Headers can change the exhaust note, giving your Chevelle a more aggressive sound.
- Weight Reduction: Some aftermarket headers are lighter than factory manifolds, contributing to overall weight savings.
Testing Hooker Competition Headers
To evaluate the effectiveness of the Hooker Competition Headers, we conducted a series of tests on a Chevy Chevelle SS. The goal was to determine if these headers could deliver the claimed 25 horsepower increase.
Installation Process
The installation of the Hooker Competition Headers was straightforward but required some mechanical knowledge. Here are the key steps involved:
- Lift the vehicle and secure it on jack stands.
- Remove the factory exhaust manifolds.
- Install the new headers, ensuring proper alignment with the exhaust ports.
- Connect the exhaust system to the headers.
- Recheck all connections and lower the vehicle.
Dyno Testing
After installation, we took the Chevelle to a local dyno to measure horsepower and torque outputs. The baseline run showed the vehicle producing 350 horsepower. Following the installation of the Hooker Competition Headers, we conducted another run.
The results were impressive. The Chevelle registered a peak horsepower of 375, confirming a gain of 25 horsepower as advertised. Torque also saw an increase, enhancing overall performance.
Real-World Performance Improvements
Beyond the dyno numbers, we took the Chevelle for a test drive to evaluate real-world performance improvements. Here’s what we observed:
- Throttle Response: The throttle response was noticeably sharper, allowing for quicker acceleration.
- High RPM Performance: The engine felt more powerful at higher RPMs, making it more enjoyable to drive.
- Exhaust Note: The sound was deeper and more aggressive, turning heads wherever we went.
Considerations Before Upgrading
While the benefits of aftermarket headers are clear, there are some considerations to keep in mind:
- Cost: Aftermarket headers can be a significant investment, so weigh the costs against your performance goals.
- Compatibility: Ensure that the headers are compatible with your specific engine and exhaust system.
- Installation: Professional installation may be required if you’re not comfortable doing it yourself.
Conclusion
In conclusion, upgrading to Hooker Competition Headers on a Chevy Chevelle SS proved to be a worthwhile investment. With a verified 25 horsepower increase and noticeable performance improvements, these headers can enhance the driving experience for any muscle car enthusiast. If you’re considering an upgrade, the benefits certainly outweigh the costs, making aftermarket headers a valuable addition to your vehicle.