1957-77 Ford Truck 8" Power Brake Booster & Bracket

Pirate Jack 1957–1977 Ford Truck 8" Dual Power Brake Booster & Mounting Bracket Kit

Bring power brakes to your classic Ford truck.

Manual brakes on a vintage Ford pickup work, but they take a heavy foot, especially in traffic or with a load in the bed. The Pirate Jack 8" Dual Power Brake Booster & Mounting Bracket Kit gives your 1957–1977 Ford truck the easy, confident pedal feel of power brakes, with the brackets and pushrod you need to mount it.

Big assist, compact size
The 8" dual diaphragm design 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. The gloss black finish gives it a clean look under the hood.

Mounting made simple
Finding the right way to hang a booster is often the hardest part of a power brake conversion. This kit includes a pair of mounting brackets that bolt to the firewall using your existing master cylinder studs, and a heim joint pushrod that connects the booster to your brake pedal. The pushrod adjusts, so you can set the pedal height right where you want it.

What’s Included

• 8" dual diaphragm power brake booster, gloss black
• Mounting brackets (pair)
• Heim joint pushrod

Not included: master cylinder, proportioning valve and vacuum hose. A proportioning valve matched to your brake setup is required.

Features

• 8" dual diaphragm design for strong assist in a compact size
• Fits the tight spaces of classic Ford truck engine bays
• Gloss black finish
• Brackets mount using your existing master cylinder studs
• Adjustable heim joint pushrod for setting pedal height
• Brand new, not remanufactured

Fitment

• 1957–1977 Ford trucks, including F100 pickups

⚠️ Installation Notes

• The 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.
• 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
The full step-by-step instructions cover bracket installation, setting pedal height, bench bleeding and system bleeding. Read through them before you start.

Questions? Give us a call! The Pirate Jack team knows brakes and is happy to help you confirm fitment and choose a master cylinder and proportioning valve for your build. Call us at 866-601-4455.

Give your Ford truck the stopping power it deserves. Order your 8" dual booster and bracket kit from Pirate Jack today.