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The Mopar 360 engine is a classic powerhouse known for its durability and performance. However, many enthusiasts seek ways to enhance its capabilities. One of the most effective modifications is the head swap. This article explores the benefits of swapping the stock heads for higher-flow alternatives, which can yield over 30 additional horsepower.
Understanding the Mopar 360 Engine
The Mopar 360 engine, introduced in the early 1970s, has been a favorite among muscle car enthusiasts. Its robust design and potential for power make it a prime candidate for modifications. The engine features a 4.00-inch bore and a 3.58-inch stroke, providing a solid foundation for performance upgrades.
Why Consider a Head Swap?
Swapping the heads on a Mopar 360 can significantly improve airflow, which is crucial for increasing horsepower. The stock heads often restrict airflow, limiting the engine’s potential. By upgrading to aftermarket or higher-performance heads, enthusiasts can unlock additional power and improve overall engine efficiency.
Benefits of Upgrading Heads
- Increased Airflow: Enhanced head designs allow for better intake and exhaust flow.
- Higher Horsepower: Improved flow can result in a significant horsepower increase, often exceeding 30 hp.
- Better Torque: Upgraded heads can also improve torque, providing a more responsive driving experience.
- Improved Efficiency: Better airflow contributes to more efficient combustion.
Choosing the Right Heads
When selecting heads for your Mopar 360, several options are available. It’s essential to choose heads that match your performance goals and budget. Consider the following factors:
- Material: Aluminum heads are lighter and dissipate heat better than iron heads.
- Combustion Chamber Size: Smaller chambers increase compression, while larger chambers can decrease it.
- Intake and Exhaust Port Size: Larger ports can improve airflow but may require additional modifications.
- Valves: Upgraded valves can improve performance and durability.
Installation Process
Installing new heads on a Mopar 360 requires some mechanical knowledge and proper tools. Here’s a general overview of the steps involved:
- Gather Tools and Parts: Ensure you have all necessary tools, gaskets, and head bolts.
- Remove Old Heads: Disconnect all accessories and remove the intake manifold, exhaust manifolds, and old heads.
- Prepare the Surface: Clean the engine block surface to ensure a proper seal.
- Install New Heads: Position the new heads and torque them to the manufacturer’s specifications.
- Reassemble: Reinstall the intake manifold and exhaust manifolds, reconnect all accessories.
Tuning After the Swap
After completing the head swap, tuning the engine is crucial to maximize performance. A proper tune can help adjust fuel delivery and ignition timing to match the new airflow characteristics. Consider these tuning options:
- ECU Reflash: Reprogramming the engine control unit can optimize performance.
- Carburetor Adjustment: If using a carburetor, adjustments may be necessary for optimal fuel-air mixture.
- Dyno Tuning: A professional dyno tune can ensure the engine runs at its best.
Conclusion
Swapping the heads on a Mopar 360 engine can lead to significant performance gains, including over 30 additional horsepower. By selecting the right heads, following proper installation procedures, and tuning the engine, enthusiasts can enjoy a more powerful and efficient driving experience. Whether you’re a seasoned mechanic or a novice, this upgrade can be a rewarding project that enhances your vehicle’s performance.