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The 1968 Plymouth Road Runner is a classic American muscle car that has captured the hearts of car enthusiasts for decades. Known for its powerful engine and iconic design, this vehicle can be further enhanced with performance upgrades that won’t break the bank. In this article, we will explore the best value performance upgrades for the 1968 Plymouth Road Runner, focusing on options that provide significant power gains for under $1,000.
1. Upgrading the Carburetor
One of the most effective ways to increase the power of your Road Runner is by upgrading the carburetor. A performance carburetor can improve air and fuel flow, resulting in better throttle response and increased horsepower.
- Consider a Holley 650 CFM carburetor for optimal performance.
- Ensure proper tuning to maximize gains.
2. Installing a Performance Intake Manifold
A performance intake manifold can significantly enhance the airflow to your engine, allowing it to breathe better and produce more power. Upgrading to a dual-plane manifold can provide a noticeable increase in torque and horsepower.
- Look for options like the Edelbrock Performer series.
- Installation is straightforward and can be done at home.
3. Upgrading the Exhaust System
A free-flowing exhaust system can reduce back pressure and improve engine efficiency. By upgrading to a performance exhaust system, you can gain horsepower while also enhancing the sound of your Road Runner.
- Consider headers for improved exhaust flow.
- Look for a cat-back exhaust system for easy installation.
4. Performance Ignition System
Upgrading the ignition system can lead to better combustion and improved engine performance. A high-performance ignition coil, along with upgraded spark plugs and wires, can provide a noticeable boost in power.
- Consider a MSD ignition system for reliable performance.
- Ensure proper gap and timing adjustments for optimal results.
5. Re-gearing the Differential
Changing the differential gears can improve acceleration and overall performance. A lower gear ratio can help your Road Runner get off the line faster, making it more responsive during takeoff.
- Look for a gear ratio in the range of 3.55 to 3.73 for optimal performance.
- Consider professional installation if you’re unfamiliar with differential work.
6. Lightweight Components
Reducing weight can improve your Road Runner’s power-to-weight ratio. Consider replacing heavy stock components with lightweight alternatives to enhance performance without sacrificing durability.
- Look for lightweight aluminum components, such as wheels and brackets.
- Evaluate options for lightweight racing seats to further reduce weight.
7. Regular Maintenance for Performance
Sometimes, the best performance upgrade is simply ensuring that your vehicle is well-maintained. Regular oil changes, air filter replacements, and tune-ups can keep your Road Runner running at its best.
- Change oil every 3,000 to 5,000 miles for optimal engine health.
- Replace the air filter to improve airflow and efficiency.
Conclusion
Enhancing the performance of your 1968 Plymouth Road Runner doesn’t have to be expensive. By focusing on these value upgrades, you can achieve significant power gains for under $1,000. Whether you’re a seasoned mechanic or a beginner, these upgrades will help you unlock the full potential of your classic muscle car.