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The 5.7 HEMI engine has gained a reputation among automotive enthusiasts for its performance and tuning potential. Upgrading components like the camshaft, headers, and tuning software can significantly enhance the engine’s output. In this article, we will explore the real-world results of a 5.7 HEMI cam upgrade paired with JBA headers and an SCT tuner, comparing it against the stock configuration on the dyno.
Understanding the 5.7 HEMI Engine
The 5.7 HEMI engine, known for its hemispherical combustion chamber design, has been a popular choice for various Dodge and Chrysler vehicles. Its robust construction and performance capabilities make it an ideal candidate for modifications.
- Power output: The stock 5.7 HEMI produces around 360 horsepower.
- Torque: The engine generates approximately 390 lb-ft of torque.
- Applications: Common in models like the Dodge Charger, Challenger, and RAM trucks.
Components of the Upgrade
To achieve a noticeable performance increase, we focused on three key components: the camshaft, JBA headers, and the SCT tuner. Each of these plays a crucial role in enhancing the engine’s capabilities.
Camshaft Upgrade
The camshaft is responsible for controlling the timing and duration of the engine’s intake and exhaust valves. Upgrading to a performance camshaft can improve airflow, resulting in better power and torque figures.
JBA Headers
Replacing the stock exhaust manifolds with JBA headers allows for improved exhaust flow. This reduction in back pressure helps the engine breathe better, further enhancing performance.
SCT Tuner
The SCT tuner enables custom tuning of the engine’s parameters. By adjusting fuel maps, ignition timing, and other settings, the tuner can optimize the engine’s performance to match the modifications made.
Dyno Testing: Stock vs Upgraded
To quantify the performance gains from the upgrades, we conducted dyno tests on both the stock 5.7 HEMI and the upgraded version. The results provide insight into the effectiveness of the modifications.
Stock 5.7 HEMI Performance
On the dyno, the stock 5.7 HEMI produced:
- Horsepower: 360 hp at 5,200 RPM
- Torque: 390 lb-ft at 4,000 RPM
Upgraded 5.7 HEMI Performance
After installing the performance camshaft, JBA headers, and tuning with the SCT, the upgraded 5.7 HEMI yielded:
- Horsepower: 410 hp at 5,400 RPM
- Torque: 420 lb-ft at 4,200 RPM
Performance Gains
The results from the dyno testing illustrate the significant performance gains achieved through the upgrades. The following summarizes the improvements:
- Horsepower increase: 50 hp
- Torque increase: 30 lb-ft
- Enhanced throttle response and acceleration
Conclusion
Upgrading the 5.7 HEMI with a performance camshaft, JBA headers, and an SCT tuner provides substantial improvements in horsepower and torque. The dyno results clearly demonstrate the effectiveness of these modifications, making it a worthwhile investment for enthusiasts seeking enhanced performance.
Whether you are looking to improve your daily driver or enhance your performance vehicle, these upgrades can help you achieve your goals. Always ensure to follow proper installation procedures and consider professional tuning to maximize the benefits of your modifications.