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The Pontiac 455 engine has long been a favorite among muscle car enthusiasts, known for its impressive torque and power. In this article, we will explore the real-world results of upgrading a Pontiac 455 with a Comp Cams Stage 2 camshaft, achieving a remarkable 455 horsepower. This upgrade not only enhances performance but also provides insights into the modifications that can take a classic engine to the next level.
Understanding the Pontiac 455 Engine
The Pontiac 455 engine, produced from 1970 to 1976, is a big block V8 that has become synonymous with American muscle. With its large displacement, the 455 is capable of generating significant power and torque, making it a popular choice for performance builds. The engine features a robust design with a cast iron block and aluminum intake, allowing for substantial upgrades.
Why Upgrade to Comp Cams Stage 2?
Upgrading to a Comp Cams Stage 2 camshaft is a popular modification for those looking to maximize the performance of their Pontiac 455. The Stage 2 camshaft is designed to increase airflow and improve engine efficiency, resulting in higher horsepower and torque outputs.
Benefits of Comp Cams Stage 2 Upgrade
- Increased horsepower and torque
- Improved throttle response
- Enhanced engine sound
- Better overall performance
Real-World Performance Results
After installing the Comp Cams Stage 2 camshaft, many Pontiac 455 owners have reported significant improvements in their vehicle’s performance. Dyno testing has shown that these upgrades can push the engine’s output to an impressive 455 horsepower, depending on other modifications and tuning.
Dyno Testing Insights
During dyno testing, the Pontiac 455 engine demonstrated not only increased horsepower but also a noticeable rise in torque. The following figures illustrate the performance gains:
- Peak horsepower: 455 HP at 5,500 RPM
- Peak torque: 500 lb-ft at 4,000 RPM
Complementary Modifications
To achieve optimal performance with the Comp Cams Stage 2 upgrade, several complementary modifications are recommended. These enhancements work in tandem with the camshaft to maximize the engine’s potential.
Recommended Upgrades
- High-performance intake manifold
- Upgraded carburetor
- Performance headers
- High-flow exhaust system
- Improved ignition system
Installation Considerations
Installing a Comp Cams Stage 2 camshaft requires a certain level of mechanical expertise. It is essential to ensure that the installation is done correctly to avoid potential issues. Here are some key considerations:
- Proper timing alignment
- Adjusting valve lash
- Using quality gaskets and seals
- Tuning the engine after installation
Conclusion
Upgrading a Pontiac 455 with a Comp Cams Stage 2 camshaft is a proven method to achieve substantial performance gains. With reported outputs of 455 horsepower, this modification showcases the potential of the Pontiac 455 engine when paired with the right enhancements. For muscle car enthusiasts looking to elevate their ride, the Comp Cams Stage 2 upgrade is a worthy investment.