FT-207DD 1957-77 Ford F-100 F-150 Truck 8" Power Brake Booster Conversion Kit Drum Brakes

Pirate Jack 1952–1977 Ford F100 8" Dual Power Brake Booster Conversion Kit | 1" Bore Master Cylinder & 10 lb Residual Valves for Drum/Drum Brakes

Power brakes for your classic Ford truck’s drums.

Still running drum brakes on all four corners of your vintage Ford pickup? You can have power brakes without converting to discs. This Pirate Jack kit pairs a compact 8" dual diaphragm power brake booster with Ford truck mounting brackets, a matched 1" bore cast iron dual reservoir master cylinder and two 10 lb residual pressure valves. That’s everything you need to give a drum/drum setup a firm, easy, confident pedal.

It’s built for 1952–1977 Ford F100 and F-1 trucks with drum brakes front and rear.

Big assist, compact size
The 8" dual diaphragm booster stacks two diaphragms in one compact can. You get strong power assist in a booster small enough to fit the tight space around the firewall of a classic Ford truck. Black powder coating gives it a durable, clean finish.

Mounting made simple
The included Ford truck booster brackets bolt to the firewall using your existing master cylinder studs. The power booster rod extension with a heim joint end connects the booster to your brake pedal and adjusts, so you can set the pedal height right where you want it.

1" bore master cylinder, sized for drums
The 1" bore cast iron dual reservoir master cylinder is sized for drum/drum brake systems and matched to the booster for a firm, consistent pedal. Its separate front and rear circuits add safety over an original single-reservoir master. It has a gold zinc lid with bail wire retainers and ports on the left side for clean brake line routing.

Why 10 lb residual valves?
Drum brakes need a little pressure held in the lines to keep the wheel cylinder cups seated and the shoes close to the drums. The two included 10 lb residual valves, one for each brake circuit, hold that pressure. That means less pedal travel, a firmer pedal and quicker brake response. Since all four wheels are drums, a proportioning valve isn’t needed for this setup.

What’s Included

Booster & Mounting

• 8" dual diaphragm power brake booster, black powder coated
• Ford truck booster brackets
• Power booster rod extension with heim joint end

Master Cylinder

• 1" bore cast iron dual reservoir master cylinder, sized for drum/drum brakes
• Gold zinc lid with bail wire retainers
• Ports on the left side

Residual Valves

• (2) 10 lb residual pressure valves, one for the front circuit and one for the rear

Fitment

• 1952–1977 Ford trucks, including 1953–1977 F100 and 1952 F-1 pickups
• For drum/drum brake systems (drum brakes front and rear)

⚠️ Installation Notes

• The booster brackets must sit flush against the firewall. You may need to grind away old welds and drill two new upper mounting holes, though some trucks already have them.
• Install one residual valve in the front brake line and one in the rear, as close to the master cylinder as possible.
• Torque the master cylinder mounting nuts to 20–25 ft-lbs.
• Bench bleed the master cylinder before installing it, then bleed the system starting at the right rear wheel. Use fresh DOT 3 or DOT 4 brake fluid only.
• Test the brakes at low speed in a safe area before driving.

? Download the Ford Truck Power Brake Booster Installation Instructions
Note: These instructions list 1957–1972 trucks, but this kit fits 1952–1977 Ford trucks. The installation steps are the same.

Why Buy This Kit

• ✔ Power brakes for drum/drum trucks, no disc conversion required
• ✔ 1" bore dual reservoir master cylinder sized for drum brakes
• ✔ Two 10 lb residual valves included for a firm, responsive pedal
• ✔ Compact 8" dual diaphragm booster fits tight Ford truck engine bays
• ✔ Ford truck brackets and adjustable heim joint pushrod included
• ✔ Brand-new components, not remanufactured

Running front discs? Choose our disc/drum or disc/disc version of this kit. Each comes with the correct master cylinder and a pre-plumbed proportioning valve.

Questions? Give us a call! The Pirate Jack team knows brakes and is happy to help confirm fitment for your truck and brake setup. Call us at 866-601-4455.

Keep your drums and gain the power. Order your Ford truck power brake kit from Pirate Jack today.