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The Mopar 360 engine has long been a favorite among muscle car enthusiasts and performance builders. With the right combination of parts, it is possible to extract over 400 horsepower from this classic engine. In this article, we will explore how to achieve this power level using Comp Cams and Brodix cylinder heads, along with other essential components.
Understanding the Mopar 360 Engine
The Mopar 360 is a small-block V8 engine that was produced by Chrysler from 1971 to 1993. Known for its robust design and potential for power, the 360 has become a popular choice for performance upgrades. Before diving into the modifications needed to reach 400+ horsepower, it’s essential to understand the engine’s basic specifications and capabilities.
- Displacement: 360 cubic inches
- Configuration: V8
- Block Material: Cast iron
- Stock Horsepower: Approximately 245 hp (varies by year)
Key Components for Achieving 400+ HP
To achieve over 400 horsepower from a Mopar 360, specific components must be upgraded or replaced. Below are the key components that contribute significantly to the performance increase.
- High-Performance Camshaft
- Aluminum Cylinder Heads
- High-Flow Intake Manifold
- Upgraded Carburetor
- Performance Exhaust System
- High-Compression Pistons
High-Performance Camshaft
One of the most critical components in achieving high horsepower is the camshaft. Comp Cams offers a variety of camshafts designed specifically for the Mopar 360. A performance camshaft will increase the engine’s lift and duration, allowing for better airflow and more power.
- Consider a camshaft with a duration of 230-240 degrees.
- Look for lift specifications around 0.500-0.550 inches.
- Choose a cam profile that matches your intended use (street vs. track).
Aluminum Cylinder Heads
Brodix cylinder heads are a popular choice for high-performance builds. These heads provide better airflow compared to stock heads, which is essential for achieving higher horsepower. Upgrading to aluminum heads also reduces weight, improving overall performance.
- Look for heads with a minimum of 180cc intake runners.
- Choose heads with a larger valve size (2.02-inch intake and 1.60-inch exhaust).
- Consider features like CNC porting for enhanced airflow.
Supporting Modifications
In addition to the camshaft and cylinder heads, other modifications are necessary to support the increased power output. These supporting modifications ensure that the engine runs efficiently and reliably.
- High-Flow Intake Manifold
- Upgraded Carburetor
- Performance Exhaust System
- High-Compression Pistons
High-Flow Intake Manifold
An aftermarket intake manifold can significantly improve airflow into the engine. A high-flow intake manifold designed for the Mopar 360 will optimize the air-fuel mixture, promoting better combustion and power.
- Choose a manifold designed for performance applications.
- Look for features like larger plenum volume and optimized runner design.
Upgraded Carburetor
The carburetor plays a vital role in delivering the right amount of fuel to the engine. Upgrading to a larger carburetor can provide the necessary fuel flow for higher horsepower levels. A 750-800 cfm carburetor is often recommended for a 400+ hp build.
- Consider a Holley or Edelbrock carburetor for reliability.
- Ensure proper tuning for optimal performance.
Performance Exhaust System
A performance exhaust system is crucial for maximizing horsepower. Upgrading to headers and a high-flow exhaust system will reduce backpressure, allowing the engine to breathe more freely and produce more power.
- Look for long-tube headers for optimal performance.
- Choose a mandrel-bent exhaust system for better flow.
High-Compression Pistons
Installing high-compression pistons can significantly increase the engine’s power output. These pistons raise the compression ratio, resulting in more power during combustion. A compression ratio of around 10.5:1 to 11:1 is ideal for a performance 360 engine.
- Consider forged pistons for durability.
- Ensure compatibility with your cylinder heads and camshaft.
Tuning and Final Adjustments
Once all components are installed, proper tuning is essential to achieve the desired horsepower and ensure the engine runs smoothly. This includes adjusting the carburetor, ignition timing, and fuel mixture.
- Use a wideband O2 sensor for accurate air-fuel ratio readings.
- Adjust ignition timing for optimal performance.
- Consider a dyno session for precise tuning.
Conclusion
Achieving over 400 horsepower from a Mopar 360 engine is entirely feasible with the right components and modifications. By utilizing Comp Cams camshafts, Brodix cylinder heads, and supporting modifications, enthusiasts can unlock the true potential of this classic engine. With careful tuning and attention to detail, you can enjoy a powerful and reliable Mopar 360 that stands out on the road or the track.