The Ford Super Duty trucks from 1999 to 2004, known for their robust build and towing capabilities, originally came equipped with leaf springs. However, many owners opt for a coil spring conversion kit for improved ride comfort and handling. This comprehensive guide explores everything you need to know about these conversion kits, addressing common questions and concerns.
What is a Coil Spring Conversion Kit for a 99-04 Super Duty?
A coil spring conversion kit replaces the factory leaf spring suspension system with a coil spring setup. This typically involves new axles, coil springs, shocks, brackets, and all the necessary hardware for a complete conversion. The result is a smoother, more controlled ride, particularly beneficial for those who don't regularly haul heavy loads. While it might slightly reduce the truck's maximum towing capacity, the enhanced daily driving comfort often outweighs this trade-off for many owners.
Why Convert from Leaf Springs to Coils?
The primary reason for converting to a coil spring system is the significant improvement in ride quality. Leaf springs, while durable and capable of handling heavy loads, can be harsh and jarring, especially on uneven roads. Coils offer a more progressive spring rate, absorbing bumps and imperfections more effectively, resulting in a more comfortable ride for both the driver and passengers. This is especially noticeable on daily commutes or when driving off-road.
What are the Advantages of a Coil Spring Conversion?
- Improved Ride Comfort: This is the most significant advantage. Coils provide a smoother, more controlled ride, reducing the jarring effect felt with leaf springs.
- Enhanced Handling: Coil springs generally lead to better handling, especially during cornering and maneuvering.
- Increased Ground Clearance (Potentially): Depending on the specific kit, some offer a slight increase in ground clearance.
- Reduced Body Roll: Coils often minimize body roll, improving stability and confidence while driving.
What are the Disadvantages of a Coil Spring Conversion?
- Reduced Payload Capacity (Potentially): While not always drastically reduced, coil spring conversions can slightly decrease the truck's maximum payload capacity compared to the original leaf spring setup.
- Higher Initial Cost: Conversion kits are typically more expensive than maintaining a leaf spring system.
- Increased Complexity: The installation process is generally more involved than leaf spring maintenance.
- Potential for Alignment Issues: Proper alignment is crucial after the conversion; incorrect alignment can lead to uneven tire wear and handling problems.
What Components are Included in a Typical Coil Spring Conversion Kit?
A typical kit usually includes:
- Front and Rear Coil Springs: These are specifically designed for the 99-04 Super Duty chassis and weight.
- Axle Shafts (Often): These are often modified or replacement axles designed to work with the coil spring system.
- Shocks/Struts: Matching shocks or struts are essential for proper suspension damping.
- Brackets and Mounting Hardware: These are critical for securing the coil springs and providing proper suspension geometry.
- Other Necessary Hardware: This might include nuts, bolts, bushings, and other small components for a complete installation.
How Much Does a Coil Spring Conversion Kit Cost?
The cost varies significantly depending on the brand, quality of components, and the specific features included. Expect to pay anywhere from a few thousand dollars to significantly more, depending on the level of customization. Labor costs for professional installation should also be factored into the total expense.
Is it Difficult to Install a Coil Spring Conversion Kit?
The installation is a complex undertaking and generally requires mechanical experience and specialized tools. It's not a weekend DIY project for most individuals. Professional installation is strongly recommended to ensure proper alignment and optimal performance.
Where Can I Buy a Coil Spring Conversion Kit?
Numerous suppliers offer coil spring conversion kits for 99-04 Super Duty trucks. Research different brands and read reviews before making a purchase. Consider factors like warranty, customer support, and the reputation of the supplier.
This guide provides a comprehensive overview of coil spring conversion kits for 1999-2004 Ford Super Duty trucks. Remember to carefully research and choose a reputable kit and installer to ensure a safe and successful conversion. Always consult a qualified mechanic before undertaking any modifications to your vehicle.
