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The 1971 Plymouth Road Runner is a classic muscle car that has captured the hearts of enthusiasts for decades. Its iconic design and performance capabilities make it a popular choice for restoration and upgrades. One of the most effective ways to boost the performance of a Road Runner is by installing a Mopar 408 Stroker Kit. In this article, we will explore the cost and performance gains associated with this upgrade.
Understanding the Mopar 408 Stroker Kit
The Mopar 408 Stroker Kit is designed to enhance the performance of the 360 cubic inch engine found in many 1971 Road Runners. By increasing the stroke of the engine, this kit allows for greater displacement and improved power output. This upgrade is particularly appealing for those looking to achieve a balance between classic styling and modern performance.
Components of the Mopar 408 Stroker Kit
- Forged steel crankshaft
- Forged aluminum pistons
- Connecting rods
- Performance camshaft
- High-performance cylinder heads
Each component in the Mopar 408 Stroker Kit is engineered to work together seamlessly, providing a significant boost in horsepower and torque. The forged steel crankshaft and aluminum pistons contribute to the engine’s durability, while the performance camshaft enhances the engine’s breathing capabilities.
Cost Considerations for Upgrading
When considering an upgrade to the Mopar 408 Stroker Kit, it is essential to evaluate the associated costs. The total investment will depend on various factors, including the cost of the kit itself, labor, and any additional modifications required for installation.
Cost Breakdown
- Mopar 408 Stroker Kit: $2,500 – $4,000
- Labor for installation: $1,000 – $2,000
- Additional parts (gaskets, fluids, etc.): $500 – $1,000
Overall, the total cost for upgrading to a Mopar 408 Stroker Kit can range from approximately $4,000 to $7,000. While this may seem like a significant investment, the performance gains can make it worthwhile for many enthusiasts.
Performance Gains from the Upgrade
One of the primary reasons for upgrading to a Mopar 408 Stroker Kit is the substantial increase in performance. This upgrade transforms the driving experience, making the Road Runner more powerful and responsive on the road.
Horsepower and Torque Improvements
With the installation of the Mopar 408 Stroker Kit, owners can expect significant improvements in both horsepower and torque. Typically, the stock 360 engine produces around 245 horsepower and 360 lb-ft of torque. After the upgrade, these numbers can increase to:
- Horsepower: 400 – 450
- Torque: 450 – 500 lb-ft
This increase in power not only enhances acceleration but also improves the overall driving dynamics of the vehicle. The Road Runner becomes more agile and responsive, providing an exhilarating driving experience.
Additional Modifications to Consider
While the Mopar 408 Stroker Kit significantly boosts performance, there are additional modifications that can further enhance the Road Runner’s capabilities. These modifications can help optimize the engine’s performance and ensure reliability.
Recommended Upgrades
- High-performance exhaust system
- Upgraded fuel system
- Better cooling system
- Performance ignition system
- Suspension upgrades
These upgrades work in conjunction with the Mopar 408 Stroker Kit to provide a comprehensive performance enhancement. A high-performance exhaust system, for instance, allows for better airflow, while an upgraded fuel system ensures that the engine receives the necessary fuel for optimal performance.
Conclusion
Upgrading a 1971 Plymouth Road Runner with a Mopar 408 Stroker Kit is a fantastic way to enhance the car’s performance and driving experience. While the initial costs may seem high, the performance gains and overall enjoyment of the vehicle make it a worthwhile investment for enthusiasts. By considering additional modifications, owners can achieve a well-rounded, powerful classic muscle car that pays homage to its legendary roots while delivering modern performance.