Table of Contents
The Mopar 340 engine is a classic powerhouse that has been a favorite among muscle car enthusiasts for decades. Known for its high-revving capabilities and impressive torque, the 340 can be enhanced further with the right combination of heads and intake. In this article, we will explore the best options available for heads and intake that can yield over 50 horsepower gains without breaking the bank.
Understanding the Mopar 340 Engine
The Mopar 340 was introduced in 1968 and quickly became known for its performance. It features a 4.04-inch bore and a 3.31-inch stroke, providing a displacement of 340 cubic inches. The engine was designed for high performance, making it a popular choice for muscle cars like the Dodge Challenger and Plymouth Barracuda.
To maximize the performance of the Mopar 340, upgrading the cylinder heads and intake manifold is essential. These components play a critical role in airflow and engine efficiency, directly impacting horsepower and torque output.
Choosing the Right Cylinder Heads
Cylinder heads are one of the most significant upgrades you can make to your Mopar 340. The right heads can improve airflow, increase compression, and enhance overall performance. Here are some of the best options available:
- Edelbrock Performer RPM Heads: These aluminum heads are designed for high performance and offer excellent airflow characteristics. They can provide significant horsepower gains while maintaining good street manners.
- Indy Cylinder Heads: Known for their high-quality craftsmanship, Indy heads are available in various configurations. They offer improved flow and can support higher RPMs, making them ideal for performance builds.
- World Products 340 Heads: These cast iron heads are a great budget-friendly option. They provide good airflow and are compatible with stock components, making them a solid choice for mild builds.
- Trick Flow Specialties Heads: These heads are designed for maximum performance and can handle high horsepower applications. They feature larger valves and improved port designs for better airflow.
When selecting cylinder heads, consider factors such as material (aluminum vs. cast iron), valve size, and port design. Each of these factors can significantly impact performance and compatibility with your existing engine setup.
Intake Manifold Options
The intake manifold is another crucial component that affects engine performance. A high-quality intake can enhance airflow and improve throttle response. Here are some of the best intake options for the Mopar 340:
- Edelbrock Performer RPM Intake: Designed for street performance, this manifold offers excellent torque and horsepower gains across the RPM range. It is compatible with stock components and works well with aftermarket heads.
- Holley Street Dominator Intake: This manifold is designed for high-performance applications. It provides excellent airflow and is ideal for use with high-lift camshafts.
- Weiand Action Plus Intake: A great option for those on a budget, this intake offers good performance and is easy to install. It provides a good balance of torque and horsepower.
- Team G Intake by Edelbrock: This is a race-oriented intake that delivers maximum horsepower at higher RPMs. It is best suited for high-performance builds and may require additional modifications.
When choosing an intake manifold, consider the intended use of your vehicle. Street-oriented intakes will provide better low-end torque, while race-oriented intakes will maximize high RPM power.
Combining Heads and Intake for Maximum Gains
To achieve the best performance gains from your Mopar 340, it’s essential to combine the right heads and intake. Here are some proven combinations that can yield over 50 horsepower:
- Edelbrock Performer RPM Heads with Edelbrock Performer RPM Intake: This combination is popular for its balance of power and drivability. It can produce significant horsepower gains while remaining street-friendly.
- Indy Heads with Holley Street Dominator Intake: This pairing is ideal for those looking to maximize performance. It offers excellent airflow and can support high RPM applications.
- World Products Heads with Weiand Action Plus Intake: A budget-friendly combination that still provides impressive gains. This setup is great for mild builds and offers good reliability.
- Trick Flow Heads with Team G Intake: For those seeking maximum performance, this combination can push the limits of the Mopar 340 and is best for race applications.
When making these upgrades, it’s also important to consider supporting modifications such as an upgraded exhaust system, carburetor, and ignition system to fully realize the potential of your new heads and intake.
Budget Considerations
Upgrading the heads and intake of your Mopar 340 can be done on a moderate budget. Here are some tips to keep costs down:
- Buy Used Parts: Look for used cylinder heads and intake manifolds in good condition. Many enthusiasts sell parts after upgrades, allowing you to save money.
- Consider Rebuilding: If you find a set of heads that need some work, consider rebuilding them instead of buying new. This can save you a significant amount of money.
- Shop Around: Prices can vary significantly between retailers. Take the time to compare prices online and in local shops to find the best deals.
- DIY Installation: If you have mechanical skills, consider installing the heads and intake yourself. This can save you the labor costs associated with a professional installation.
By being strategic about your purchases and installations, you can achieve impressive performance gains without overspending.
Conclusion
Upgrading the heads and intake of your Mopar 340 is a fantastic way to unlock significant horsepower gains on a moderate budget. By choosing the right combination of components and considering factors such as airflow, compatibility, and intended use, you can enhance your engine’s performance and enjoy the thrill of driving a truly powerful muscle car.