Upgrading a classic 1967 Ford Mustang with a power brake conversion brings modern safety and performance to a revered vintage platform. This guide focuses on a popular kit using a single diaphragm master cylinder designed for the 9-inch brake system found in many of these iconic cars.
By pairing a purpose-built 1967 Ford Mustang power brake conversion kit with a 9 single diaphragm master cylinder, owners preserve the original look while gaining reliable pedal feel and improved stopping performance. The following sections break down fitment, installation, and benefits specific to this setup.
| Component | Specification | Benefit | Compatibility Notes |
|---|---|---|---|
| Master Cylinder Type | Single Diaphragm | Consistent pedal feel and reduced internal friction | Optimized for 9-inch drum and disc applications |
| Bore Size | 7/8-inch to 1-inch | Balances pedal effort and fluid displacement | Common in period-correct kits for 1964.5–1970 Mustangs |
| Port Configuration | Dual port outlet | Provides redundancy and safer braking performance | Must match existing brake lines and proportioning valve |
| Material | Cast aluminum with anodized finish | Corrosion resistance and classic appearance | Requires correct mounting bolts and banjo fittings |
Understanding the 1967 Ford Mustang Power Brake Conversion Kit 9 Single Diaphragm
What Makes This Kit Relevant for Classic Mustang Owners
The 1967 Ford Mustang power brake conversion kit 9 single diaphragm is designed to retrofit front disc brakes or upgrade drum systems while maintaining period-correct aesthetics. The single diaphragm design reduces pedal drag and delivers a firm, progressive feel that vintage drivers expect.
These kits typically include the master cylinder, brackets, hoses, and necessary hardware to interface with the existing brake lines and steering column. By using a 9 single diaphragm master cylinder, the system keeps the look of the original setup while improving safety for street or show-driven cars.
Brake System Compatibility and Fitment for 1967 Mustang
Ensuring the Kit Matches Your Current Brake Layout
Before purchasing, verify that the kit matches your Mustang’s current brake configuration, whether it retains the original 9-inch drum brakes or has been previously modernized. Most 1967 models came with 9-inch drums in the front, and the conversion kit is engineered to adapt to this footprint.
Check the spacing around the steering box and frame to confirm there is no interference with the new bracket. Some owners also review the length of the pushrod to the master cylinder to ensure proper pedal ratio and full piston return without excessive adjustment.
Installation Process and Best Practices
Step-by-Step Approach for DIY or Professional Fitment
A successful installation begins with gathering all necessary tools, including line wrenches, a flare nut tool, and a torque wrench. The existing brake components must be safely removed, and the mounting surface should be cleaned to prevent debris from entering the new system.
Installing the 1967 Ford Mustang power brake conversion kit with a 9 single diaphragm master cylinder generally involves mounting the cylinder, connecting the pushrod, bleeding the system, and verifying pedal height and firmness. Using new seals and carefully inspecting hoses reduces the risk of future leaks or performance issues.
Performance Benefits and Driving Dynamics
How the Single Diaphragm Design Improves Braking Feel
The single diaphragm master cylinder reduces internal resistance, which translates to a smoother pedal and more direct modulation under braking. This is especially valuable in a classic Mustang, where original systems can suffer from sponginess or inconsistent response over time.
With correct setup, the kit maintains the heritage pedal ratio while providing the confidence of modern braking power. Drivers often notice shorter stopping distances and more consistent behavior whether the car is idling in a driveway or cruising at highway speed.
Key Takeaways for Upgrading Your 1967 Mustang
- Confirm front brake configuration and steering box clearance before ordering
- Use high-quality hoses and fittings to match the new master cylinder
- Follow a thorough bleeding procedure to remove air and ensure pedal firmness
- Test drive at low speeds first to verify pedal height and stopping power
- Maintain factory-style appearance while gaining modern braking safety
FAQ
Reader questions
Will this kit work with my 1967 Mustang that still has the original drum brakes?
Yes, the kit is engineered to interface with the factory 9-inch drum brake setup, allowing you to upgrade to front discs or retain drums with improved pedal feel and reliability.
Do I need to modify the steering column or firewall to install the single diaphragm master cylinder?
Most 1967 Mustang applications do not require firewall modifications, and the steering column can remain stock; however, verify pushrod length and master cylinder position for optimal pedal height and clutch compatibility if equipped.
Can I use this kit for a show car that must pass concours judging?
Many concours-class cars accept these kits when installed neatly with period-correct lines and fittings, as they restore safe braking without altering the outward appearance of the brake system.
Is it safe to drive daily with this conversion compared to the original hydraulic system?
When properly installed and bled, the conversion provides more consistent pedal feel and stopping performance, making daily driving safer and more predictable, especially in varied traffic conditions.