The Ford Mustang Fox Body platform, produced from 1979 to 1993, remains a popular choice for enthusiasts seeking a classic muscle car experience. One popular modification to boost performance is the installation of long tube headers. But what are they, and are they right for your Fox Body? This comprehensive guide explores everything you need to know about Fox Body long tube headers, from their benefits and drawbacks to installation considerations.
What are Long Tube Headers?
Long tube headers are exhaust system components that replace the factory manifolds. Unlike shorty headers, which are shorter and often less restrictive, long tube headers extend further down the chassis, typically exiting near the rear axle. This longer design allows for improved exhaust scavenging, leading to increased horsepower and torque. They achieve this by efficiently extracting exhaust gases, reducing backpressure, and improving the engine's breathing.
Benefits of Long Tube Headers on a Fox Body Mustang
The advantages of installing long tube headers on your Fox Body are significant, primarily focused on performance gains:
- Increased Horsepower and Torque: This is the most significant benefit. By reducing exhaust backpressure, long tube headers allow the engine to breathe more efficiently, resulting in noticeable gains in horsepower and torque, particularly in the mid-to-upper RPM range.
- Improved Throttle Response: The improved exhaust flow leads to a more responsive throttle, making the car feel more lively and engaging to drive.
- Enhanced Exhaust Note: Many enthusiasts appreciate the improved sound of long tube headers, often described as a deeper, more aggressive exhaust note.
Drawbacks of Long Tube Headers on a Fox Body Mustang
While the benefits are compelling, there are some drawbacks to consider:
- Installation Complexity: Installing long tube headers can be a challenging undertaking, often requiring significant mechanical skill and specialized tools. Clearance issues with steering components, suspension parts, and the floor pan are common.
- Potential for Leaks: Improper installation can lead to exhaust leaks, resulting in decreased performance and potentially damaging components.
- Emissions Concerns: Long tube headers may not comply with emission regulations in some areas, potentially leading to issues during vehicle inspections. This is especially true for older vehicles.
- Increased Drone: While many appreciate the improved exhaust note, the longer tubes can also lead to an increase in exhaust drone at certain RPMs, which can be uncomfortable during long drives.
- Cost: Long tube headers are generally more expensive than shorty headers or stock manifolds.
What size headers should I get for my Fox Body?
The ideal header size depends on several factors, including your engine modifications and desired performance characteristics. Generally, 1 5/8" primary tubes are a popular choice for naturally aspirated Fox Bodies, while larger 1 3/4" or even 2" primaries are often preferred for forced induction applications (turbocharged or supercharged engines). Consulting with an experienced performance shop or researching header specifications for your specific engine build is recommended.
Do I need a tune after installing long tube headers?
Yes. Installing long tube headers significantly alters the engine's air/fuel mixture and timing. Without a proper tune (ECU reprogramming), your engine could run lean, potentially causing damage. A professional dyno tune is highly recommended to optimize your engine's performance and safety after the installation of long tube headers.
Are long tube headers street legal?
The legality of long tube headers varies depending on your location and local emission regulations. In some areas, they may be perfectly legal, while in others, they might require modifications to meet emission standards or may be prohibited altogether. Check your local laws and regulations before purchasing and installing them.
How difficult is it to install long tube headers on a Fox Body?
Installing long tube headers on a Fox Body Mustang is generally considered a challenging project. It requires mechanical aptitude, specialized tools, and patience. Expect a significant time commitment, and many enthusiasts choose to have a professional mechanic perform the installation.
Conclusion
Fox Body long tube headers offer substantial performance gains but come with considerations regarding installation complexity, cost, and potential legal issues. Weigh the advantages and disadvantages carefully, ensuring that you have the necessary skills or access to qualified help for installation. With proper planning and execution, long tube headers can unlock significant performance potential in your classic Ford Mustang.
