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The Dodge Charger 5.7 HEMI is a powerful vehicle that many enthusiasts aim to enhance for better performance. Building a 450 horsepower Charger requires careful selection of components, particularly the intake system, camshaft, and pulleys. This article will explore the best choices for each of these components to achieve your horsepower goals.
Understanding the HEMI Engine
The 5.7 HEMI engine is known for its robust design and impressive power output. With its hemispherical combustion chambers, it allows for better airflow and combustion efficiency. To maximize the potential of this engine, modifications to the intake, camshaft, and pulleys are essential.
Choosing the Right Intake System
The intake system is crucial for improving airflow into the engine. A high-performance intake can significantly increase horsepower and torque. Here are some top choices:
- Cold Air Intake Systems: These systems draw cooler air from outside the engine bay, resulting in denser air entering the engine.
- High-Performance Intake Manifolds: Upgrading the manifold can improve airflow and throttle response.
- Throttle Body Upgrades: A larger throttle body can increase airflow, enhancing performance.
Popular Intake Options
- K&N Cold Air Intake: Known for its excellent filtration and airflow.
- BBK Performance Intake Manifold: Offers improved performance and a sleek design.
- Fast Manifolds: Renowned for their high flow capabilities.
Selecting the Right Camshaft
The camshaft plays a significant role in determining the engine’s performance characteristics. A performance camshaft can increase power by optimizing the timing and lift of the valves. Consider the following:
- Duration: Longer duration allows for more air and fuel to enter the combustion chamber.
- Lift: Higher lift increases the amount of air and fuel mixture entering the engine.
- Overlap: The right amount of overlap can improve performance at higher RPMs.
Recommended Camshaft Options
- Comp Cams XFI Camshaft: Designed for optimal performance with a great power band.
- Hughes Engines Camshaft: Offers a great balance of torque and horsepower.
- Mopar Performance Camshaft: A factory option that provides reliable power increase.
Upgrading the Pulley System
Pulley upgrades can enhance the performance of the supercharger or alternator, leading to better engine efficiency. Here are some options to consider:
- Underdrive Pulleys: These reduce the speed of accessories, allowing the engine to focus more on power.
- Supercharger Pulleys: Upgrading to a smaller supercharger pulley can increase boost pressure.
- Alternator Pulleys: A high-performance alternator pulley can improve electrical efficiency.
Top Pulley Choices
- March Performance Underdrive Pulley: Known for its lightweight design and performance gains.
- Metco Supercharger Pulley: Offers various sizes for customizable boost levels.
- Powerhouse Alternator Pulley: Enhances charging efficiency without compromising performance.
Final Thoughts on Building a 450 HP Charger
Building a 450 HP Dodge Charger 5.7 HEMI requires careful consideration of several components, including the intake system, camshaft, and pulleys. By selecting the right parts, enthusiasts can achieve their horsepower goals while enjoying the thrill of enhanced performance. Always ensure that modifications are compatible with your vehicle and consider consulting with a professional mechanic for installation.