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The Pontiac 455 is a powerhouse engine known for its torque and potential for performance upgrades. If you’re looking to boost your horsepower by 50-75 HP, selecting the right camshaft and intake combination is crucial. In this article, we will explore the best options available for enhancing your Pontiac 455’s performance.
Understanding the Pontiac 455 Engine
The Pontiac 455 was produced between 1970 and 1976 and is part of the Pontiac V8 family. This engine is famous for its large displacement, which contributes to its impressive torque output. With the right modifications, the 455 can be transformed into a formidable performer on the street or the track.
Choosing the Right Camshaft
Upgrading the camshaft is one of the most effective ways to increase horsepower. The camshaft controls the timing and duration of the engine’s valve openings, which directly affects airflow and performance. Here are some top camshaft options for the Pontiac 455:
- Summit Racing K1103: This cam offers a good balance of performance and drivability, providing a noticeable increase in horsepower without sacrificing low-end torque.
- Lunati Voodoo 60103: Known for its aggressive profile, this cam can significantly improve high RPM performance, making it ideal for racing applications.
- Comp Cams Xtreme Energy 51-000-5: This camshaft is designed for street performance, offering excellent throttle response and mid-range power.
Intake Manifold Options
The intake manifold plays a vital role in directing air and fuel into the engine. A high-performance intake can complement your camshaft choice and help achieve the desired horsepower gains. Here are some popular intake manifold options for the Pontiac 455:
- Edelbrock Performer RPM: This intake is designed for performance applications and works well with a variety of camshafts, providing excellent airflow and power gains.
- Holley Street Dominator: This single-plane intake is ideal for high RPM performance, making it a great match for aggressive cam profiles.
- Weiand Action Plus: A dual-plane intake that offers a good balance of low-end torque and high-end horsepower, suitable for street applications.
Combining Camshaft and Intake for Maximum Gains
To achieve the best performance gains, it’s essential to pair the right camshaft with an appropriate intake manifold. Here are some recommended combinations that can help you reach the 50-75 HP increase:
- Summit Racing K1103 with Edelbrock Performer RPM: This combination provides a well-rounded performance boost, ideal for street use.
- Lunati Voodoo 60103 with Holley Street Dominator: Perfect for those looking for maximum high RPM gains and racing capabilities.
- Comp Cams Xtreme Energy 51-000-5 with Weiand Action Plus: Balances low-end torque with high-end power, making it suitable for a variety of driving conditions.
Additional Upgrades to Consider
While the camshaft and intake manifold are critical, other upgrades can further enhance your Pontiac 455’s performance. Consider the following:
- Headers: Upgrading to high-performance headers can improve exhaust flow and complement your intake and camshaft upgrades.
- Carburetor: A larger carburetor can provide the necessary fuel to match your upgraded airflow, maximizing performance.
- Ignition System: A high-performance ignition system ensures optimal spark delivery, enhancing combustion efficiency and power output.
Conclusion
The Pontiac 455 has immense potential for performance upgrades. By carefully selecting the right camshaft and intake manifold, you can achieve significant horsepower gains. Remember to consider additional upgrades to maximize your engine’s performance. With the right combination, your Pontiac 455 can become a true powerhouse on the road.