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The A-body Mopar platform has long been a favorite among car enthusiasts looking to build a performance vehicle on a budget. With a rich history of muscle cars like the Dodge Dart and Plymouth Scamp, these vehicles offer a solid foundation for performance upgrades. In this article, we will explore whether it is feasible to build a 400 horsepower A-body Mopar for just $2,500.
Understanding the A-Body Mopar Platform
The A-body platform was produced by Chrysler from the 1960s through the early 1970s. It includes models such as:
- Dodge Dart
- Plymouth Valiant
- Plymouth Duster
- Dodge Scamp
These vehicles are known for their lightweight design and rear-wheel drive configuration, making them ideal candidates for high-performance builds. To achieve our goal of 400 horsepower, we must consider various components and modifications.
Setting a Budget
With a budget of $2,500, careful planning is essential. Here’s a breakdown of potential expenses:
- Engine: $1,200
- Transmission: $500
- Rear End: $300
- Exhaust System: $200
- Miscellaneous Parts: $300
Each component must be chosen wisely to stay within the budget while maximizing performance.
Choosing the Right Engine
The heart of any performance build is the engine. For our A-body Mopar, we need an engine that can produce 400 horsepower without breaking the bank. Here are a few options:
- 318 Small Block: A great starting point with potential for upgrades.
- 360 Small Block: Offers more power out of the box and can be found at reasonable prices.
- 5.7L HEMI: A modern option that may require more investment but has significant power potential.
Choosing a used engine can save money. Look for local listings or salvage yards for the best deals.
Transmission Selection
The transmission plays a crucial role in delivering power to the wheels. Options include:
- 904 TorqueFlite: Lightweight and reliable, perfect for budget builds.
- 727 TorqueFlite: Heavier but can handle more power, ideal for high-performance applications.
Finding a used transmission can help maintain the budget. Ensure it is in good working condition before purchase.
Rear End and Differential
The rear end is critical for transferring power to the ground. Consider the following options:
- 8.75-inch Rear End: A strong choice for performance builds.
- Dana 60: Offers superior strength but may exceed budget constraints.
Look for a used 8.75-inch rear end to keep costs low while ensuring adequate performance.
Exhaust System Upgrades
A proper exhaust system is essential for maximizing horsepower. Options include:
- Headers: Improve airflow and increase power.
- Dual Exhaust: Enhances performance and sound.
Consider purchasing used headers and exhaust components to save money while achieving the desired performance.
Miscellaneous Parts and Upgrades
To complete the build, several miscellaneous parts will be needed. These may include:
- Intake Manifold: A performance intake can significantly boost horsepower.
- Carburetor: Upgrading to a larger carburetor can improve fuel delivery.
- Ignition System: A high-performance ignition can enhance reliability and performance.
Shopping for used or refurbished parts can help stay within the budget while achieving performance goals.
Final Thoughts
Building a 400 horsepower A-body Mopar for $2,500 is ambitious but possible with careful planning and strategic purchasing. By focusing on key components and considering used parts, enthusiasts can create a powerful and fun vehicle without breaking the bank. Remember to account for labor costs if you are not performing the work yourself, as this can impact the overall budget.