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The 1969 Chevy Nova is an iconic American muscle car that has captured the hearts of enthusiasts for decades. One of the most popular modifications among car enthusiasts is the installation of long tube headers. This article explores how much power a 1969 Chevy Nova gains from long tube headers, supported by real dyno results.
Understanding Long Tube Headers
Long tube headers are designed to improve exhaust flow and enhance engine performance. Unlike shorty headers, long tube headers have longer primary tubes, which allow for better scavenging of exhaust gases. This can lead to significant power gains, especially in high-performance applications.
Benefits of Installing Long Tube Headers
- Improved exhaust flow
- Increased horsepower and torque
- Enhanced engine sound
- Better throttle response
Dyno Testing Methodology
To determine the power gains from long tube headers, a series of dyno tests were conducted on a 1969 Chevy Nova equipped with a 350 cubic inch V8 engine. The testing involved measuring horsepower and torque before and after the installation of the headers.
Baseline Measurements
Before installing the long tube headers, the Nova was tested with its factory exhaust system. The baseline measurements recorded were:
- Horsepower: 250 hp at 5,000 RPM
- Torque: 350 lb-ft at 3,500 RPM
Post-Installation Measurements
After the long tube headers were installed, the Nova was subjected to the same dyno tests. The results showed a significant increase in performance:
- Horsepower: 290 hp at 5,000 RPM
- Torque: 375 lb-ft at 3,500 RPM
Power Gains from Long Tube Headers
The dyno results indicate that the installation of long tube headers on the 1969 Chevy Nova resulted in:
- Horsepower Gain: 40 hp
- Torque Gain: 25 lb-ft
Factors Influencing Power Gains
Several factors can influence the amount of power gained from long tube headers, including:
- Engine size and configuration
- Existing exhaust system components
- Tuning and fuel quality
- Overall engine condition
Conclusion
The installation of long tube headers on a 1969 Chevy Nova can provide substantial power gains, as demonstrated by real dyno results. With an increase of 40 horsepower and 25 lb-ft of torque, long tube headers are a worthwhile investment for any Nova enthusiast looking to enhance their vehicle’s performance.
Further Modifications to Consider
If you’re considering long tube headers for your 1969 Chevy Nova, you might also want to explore additional modifications that can complement the performance gains:
- High-performance intake manifold
- Upgraded carburetor or fuel injection system
- Performance camshaft
- High-flow fuel pump
Combining these modifications with long tube headers can further enhance the power and responsiveness of your Nova, making it an even more thrilling ride.