Are you frustrated with your truck’s speed limitations? If you’re wondering how to make your truck go above 65 mph, you’re not alone. Many truck owners face speed restrictions due to engine limitations, factory settings, or mechanical inefficiencies. Fortunately, there are several ways to increase your truck’s speed safely and efficiently.
In this detailed guide, we’ll explore the best methods to enhance your truck’s speed, covering engine modifications, performance tuning, and legal considerations. By the end, you’ll have all the knowledge needed to make informed decisions about upgrading your truck’s speed.
1. Understanding Why Your Truck is Limited to 65 MPH
1.1 The Role of Speed Governors in Trucks
Most modern trucks come with factory-installed speed governors that restrict them to a maximum speed—often 65 mph. These governors are installed for safety, fuel efficiency, and regulatory compliance. While they serve a purpose, they can be frustrating if you need more speed.
1.2 Common Factors That Affect Truck Speed
Several factors can prevent your truck from exceeding 65 mph, including:
- Electronic Speed Limiters – Installed by manufacturers to control speed.
- Engine Power & Performance – A weaker engine may struggle to go faster.
- Aerodynamics & Weight – Heavy loads and poor aerodynamics slow the truck.
- Tire Size & Pressure – Incorrect tire settings can reduce speed efficiency.
1.3 Is It Legal to Remove Speed Limiters?
Before modifying your truck, it’s essential to check local laws and regulations. Some states and countries have restrictions on removing speed governors, especially for commercial vehicles. Always ensure compliance before making adjustments.
2. Modifying Your Truck’s Engine for Higher Speed
2.1 Upgrading the Engine Performance
A more powerful engine can significantly improve speed. Some effective engine modifications include:
- Installing a Turbocharger or Supercharger – Increases horsepower and torque.
- Upgrading the Air Intake System – Enhances airflow for better combustion.
- Tuning the Fuel Injection System – Optimizes fuel delivery for higher efficiency.
2.2 Adjusting the Gear Ratio for Better Speed
Your truck’s gear ratio plays a crucial role in determining how fast it can go. Lower gear ratios provide more torque, while higher gear ratios allow for higher speeds. Consider adjusting your differential gears to achieve the desired balance.
2.3 Enhancing the Exhaust System for Performance Gains
A high-performance exhaust system can reduce backpressure, allowing the engine to expel gases more efficiently. Consider installing:
- High-Flow Catalytic Converters
- Performance Mufflers
- Larger Exhaust Pipes
These modifications help improve engine efficiency and acceleration, allowing your truck to surpass 65 mph with ease.
3. Electronic and Software Adjustments for Higher Speed
3.1 Removing or Adjusting the Speed Governor
One of the most effective ways to make your truck go above 65 mph is by modifying or removing the electronic speed governor. This can be done using:
- ECU Tuning Software – Adjusts factory speed settings.
- Performance Chips – Override speed restrictions.
- Dealer or Mechanic Assistance – Professional tuning services can help.
3.2 Reprogramming the ECU for More Power
The Engine Control Unit (ECU) controls various aspects of your truck’s performance. By reprogramming or remapping the ECU, you can unlock additional horsepower and remove speed limitations.
3.3 Installing a Performance Tuner for Speed Optimization
A performance tuner is a plug-and-play device that allows you to customize engine settings. With a tuner, you can:
- Increase speed limits
- Optimize fuel efficiency
- Improve throttle response
Popular tuners like DiabloSport, SCT, and Hypertech offer easy solutions for boosting truck speed.
4. Improving Aerodynamics and Reducing Weight
4.1 How Aerodynamics Affect Your Truck’s Speed
Aerodynamics play a significant role in how fast your truck can go. Poor aerodynamics cause drag, which slows the vehicle down. To improve aerodynamics:
- Use a Tonneau Cover – Reduces air resistance.
- Lower the Truck’s Suspension – Improves stability and reduces drag.
- Remove Unnecessary Roof Racks & Accessories – Minimizes wind resistance.
4.2 Reducing Excess Weight for Better Performance
A lighter truck accelerates faster and requires less power to maintain high speeds. Reduce weight by:
- Removing Unnecessary Cargo
- Using Lightweight Wheels
- Upgrading to an Aluminum Driveshaft
4.3 Choosing the Right Tires for Speed Efficiency
Tires impact speed and fuel efficiency. For higher speeds, use:
- Low Rolling Resistance Tires – Improve fuel efficiency and speed.
- Properly Inflated Tires – Ensures optimal contact with the road.
- Performance Tires – Designed for better traction and handling.
5. Safety Considerations When Increasing Your Truck’s Speed
5.1 Ensuring Brake System Efficiency
When increasing speed, upgrading your braking system is essential for safety. Consider:
- High-Performance Brake Pads & Rotors
- Upgraded Brake Calipers
- Brake Fluid with High Boiling Point
5.2 Suspension Upgrades for Better Stability
A stable truck is safer at high speeds. Upgrade your suspension system with:
- Stronger Shock Absorbers
- Performance Springs
- Sway Bars for Better Handling
5.3 Legal and Insurance Implications of Speed Modifications
Before modifying your truck, check with your insurance provider to ensure coverage remains valid. Also, verify that your modifications comply with state and federal laws to avoid fines or penalties.
Frequently Asked Questions (FAQs)
1. Can I Remove the Speed Limiter on My Truck?
Yes, but it depends on your truck’s make, model, and software. Some trucks allow speed limiter removal through ECU tuning, while others require professional modification.
2. Will Increasing My Truck’s Speed Affect Fuel Efficiency?
Yes, driving at higher speeds typically reduces fuel efficiency. However, optimizing aerodynamics and upgrading performance parts can help balance speed and fuel economy.
3. Is It Safe to Modify My Truck for Higher Speeds?
Yes, but only if done correctly. Ensure you upgrade brakes, suspension, and tires to handle the increased speed safely.
4. How Much Does It Cost to Make a Truck Go Above 65 MPH?
Costs vary depending on modifications. Basic tuning may cost $300-$500, while advanced upgrades like turbochargers and gear ratio adjustments can cost $1,000-$5,000.
5. Will Modifying My Truck’s Speed Affect Its Warranty?
Yes, modifying your truck’s ECU, engine, or speed governor may void the manufacturer’s warranty. Always check with your dealer before making changes.
Conclusion
Increasing your truck’s speed beyond 65 mph is possible with engine upgrades, ECU tuning, aerodynamics improvements, and proper maintenance. However, it’s essential to consider safety, legal regulations, and vehicle performance before making modifications.
If you’re serious about making your truck faster, start with basic tuning and performance upgrades, then gradually move to more advanced modifications. With the right approach, you can enjoy a faster, more efficient, and high-performing truck while staying safe on the road.
