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The 1971 Dodge Demon is a classic muscle car that has captured the hearts of enthusiasts for decades. For those looking to enhance its performance, upgrading with Mopar performance parts can provide a significant boost in horsepower. This article will break down the costs associated with upgrading a 1971 Dodge Demon to achieve a 100+ horsepower increase.
Understanding the 1971 Dodge Demon
The Dodge Demon was originally introduced as a compact muscle car, designed to compete with other performance vehicles of its time. With a lightweight body and a variety of engine options, it has become a popular choice for modifications. Understanding the stock specifications is crucial before diving into upgrades.
- Engine options: 225 cu in (3.7 L) Slant-6, 318 cu in (5.2 L) V8, 340 cu in (5.6 L) V8, 383 cu in (6.3 L) V8, and 426 cu in (7.0 L) Hemi.
- Horsepower range: 145 to 425 hp depending on the engine choice.
- Weight: Approximately 3,000 lbs.
Performance Goals
To achieve a boost of 100+ horsepower, it’s essential to set clear performance goals. This can involve a combination of engine upgrades, exhaust modifications, and tuning adjustments. The following sections will outline the necessary components and their associated costs.
Engine Upgrades
One of the most effective ways to increase horsepower is through engine upgrades. Here are some key components to consider:
- Performance Camshaft: Upgrading to a high-performance camshaft can significantly improve airflow and engine efficiency. Cost: $300 – $800.
- High-Performance Carburetor: A larger carburetor can provide the necessary fuel for increased horsepower. Cost: $400 – $600.
- Intake Manifold: An aftermarket intake manifold designed for performance can enhance airflow. Cost: $250 – $500.
- Headers: Upgrading to headers improves exhaust flow and can increase horsepower. Cost: $300 – $600.
- Engine Rebuild: If the engine is tired, a complete rebuild with performance parts can yield significant gains. Cost: $2,500 – $5,000.
Exhaust System Upgrades
The exhaust system plays a critical role in engine performance. Upgrading this system can lead to better horsepower and torque figures:
- Performance Mufflers: These can reduce back pressure and improve sound. Cost: $100 – $300.
- Full Exhaust System: A complete aftermarket exhaust system can maximize performance. Cost: $500 – $1,200.
Tuning and Additional Modifications
After installing performance parts, tuning the engine is essential to ensure optimal performance. Here are some costs associated with tuning and additional modifications:
- Dyno Tuning: This service adjusts the engine’s fuel and timing settings for maximum performance. Cost: $300 – $600.
- Ignition System Upgrade: A high-performance ignition system can improve combustion efficiency. Cost: $200 – $400.
- Fuel System Upgrade: Upgrading the fuel pump and injectors may be necessary for increased horsepower. Cost: $300 – $700.
Estimated Total Costs
Now that we have outlined the individual costs, let’s summarize the estimated total costs for a 100+ hp boost:
- Engine Upgrades: $3,000 – $7,500.
- Exhaust System Upgrades: $600 – $1,500.
- Tuning and Additional Modifications: $800 – $1,700.
Total Estimated Cost: $4,400 – $10,700.
Conclusion
Upgrading a 1971 Dodge Demon with Mopar performance parts can be a rewarding project that results in a significant horsepower increase. By carefully selecting components and considering the associated costs, enthusiasts can create a powerful and reliable muscle car. Whether you’re a seasoned mechanic or a novice, the journey of upgrading your Demon can be both educational and exhilarating.