PB-5 Power Brake Kit Instructions

65-66 Power Booster Firewall Template

63-65 Falcon Clutch Cable Supplemental Instructions

Q: Will it fit my 4-wheel disc brakes?

Yes, the kit fits any combination of drum or disc brakes when the correct master cylinder is selected when ordering. Also fits any original 65-73 master cylinder.

Q: What about Falcon and Ranchero?

Yes, with extra work. Requires welding additional piece to brake pedal to relocate pedal pin. 60-63 Falcon must use original style master cylinder or Shelby style export brace with tandem master. 67-70 Mustang/Cougar use the 67-70 specific booster and pedal offered by MustangSteve.

Q: Will the tandem master cylinder clear the shock tower?

Yes, clears by about 2 inches and doesn't interfere with export brace (except early Falcons and Comets where dual piston requires Shelby style export brace).

Q: Will it fit a 351W with Heddman headers?

Yes, clears with no problems. May need to remove header for installation, but clears fine once bolted in.

Q: Why won't imporved booster fit my car with original manual transmission?

Clutch actuation rod interferes with booster stud attachment point. However, works with T5 or Tremec transmission using MustangSteve cable-actuated clutch.

Q: How much shorter is the pedal travel with this upgrade?

About 2" less pedal travel with front disc brakes, and roughly 1" less with 4-wheel disc brakes, compared to a typical stock-geometry power brake conversion — giving a noticeably firmer, more modern pedal feel.

Q: What's the additional firewall support for?

It's an extra brace beyond the stock mounting points that stiffens the pedal-box area of the firewall, so the shorter/firmer pedal doesn't flex the sheet metal under hard braking.