MustangSteve FAQ Mustang Brake Pedals

BRAKE PEDALS
This page discusses the various different brake pedals and pedal supports offered on Mustangs and Cougars from 1965-1970
Want to POST a question to MustangSteve's FYI FORD Forum?
Frequently Asked Questions
Taken From
MustangSteve’s FYI FORD Message Board
65-66
Manual Trans.
Manual & Power
68 Only
Automatic Trans.
Manual Brakes Only
67 ONLY
Automatic Trans.
Power Brakes only
(68-69 similar with more offset below pin)
67
Automatic Trans.
Manual Brakes Only
69-70
Automatic Trans.
Manual Brakes Only
64-1/2 & early 65 had this type of pedal pin.
(Brake light switch was on master cylinder instead of pedal pin)
64-1/2 to 67
Automatic
68 - up Automatic
Unique to 68 Manual Brakes.
Bracket appears to have been designed to hold a switch, but was never utilized for that purpose.  Acts as a positive stop for the pedal's upward travel.
67 Power brake pedal.
Note the notch in the pedal about 1/2 way between the pivot and the pin.  That notch gives extra clearance around the clutch pedal shaft when used on manual transmission cars.
Power brake pedals measured 5.0 " from center of pivot to center of pedal pin 1967 - 1969
Manual brake pedals measured 2.0" from center of pivot to center of pedal pin for all years 65-70.
Power brake pedals measured 4.5 " from center of pivot to center of pedal pin 1970 only
Power brake pedal 1970 only.
Note the steeper curve right below the pedal pin to clear the wider collapsible steering column.
All 68-70 pedals have that offset.
All pedal assemblies had 4 of these plastic bushings.
Two go in the brake pedal pivot.
Two go into the pot metal bushings in the pedal support.
They seldom wear out on automatic cars, but almost always wear out on manual cars.
WHAT FITS WHAT...

Brake pedals are identical between manual transmission and automatic transmission, except the foot pad part. 
A pedal from an automatic car can have the foot pad trimmed to fit on a manual transmission car of the same year.

65-66 brake pedals are same for manual or power brake cars.

67 manual brake pedal will fit in 65-66 as exact replacement.  65-66 pedals will fit the 67 car.

68-70 manual brake pedal will fit 65-70 and work fine but has more side offset.  Foot pad winds up in exactly the same spot, though. The foot pad is wider on the 68-70.

65-67 manual brake pedals will NOT fit in 68-70 car due to the wider steering column. (fits but not well)

67 power brake pedal will only fit 67 car.

68-69 power brake pedal can be utilized in 67-70 car as long as the 67-69 booster is utilized.

70 power brake pedal can be used in 67-70 car as long as the 70 booster is utilized.

70 booster cannot be used on 67-69 power brake pedal

67-69 booster cannot be used on 70 power brake pedal.

IMPORTANT: 
   On cars with manual brakes, the steel lever arm you see welded to the top of the pedal serves as a stop to keep the pedal from being able to travel back towards the driver far enough to pull the pushrod out of the master cylinder.  If the rod comes out of the master cylinder, there will be no brakes. 
   Most master cylinders for manual brake cars have a positive rod retention clip built into the piston.  The rod snaps in place and is very difficult to get out. MOST DISC BRAKE MASTER CYLINDERS DO NOT HAVE THAT FEATURE, since they were mostly designed for use with a power booster.
   When swapping master cylinders and brake parts, BE SURE there is no way the rod can be pulled out of the master cylinder, by either a positive lever stop on top of the pedal, or by positive rod retention clip in the master cylinder, or both.


   74 Maverick non-power disc/drum master cylinder with 15/16" bore is very popular and has the clip
   67-70 Mustang power disc/drum master cylinder with 1.0" bore does not have the clip.

Boosters for 67-69 had curved input shaft
Boosters for 1970 had straight input shaft
65-66 pedal support
64-1/2 Pedal support is identical except the square hole on the driver side, (denoted by a red square in the picture) where the clutch pedal stop bolts on, is a 1" long vertical slot so the clutch pedal height can be adjusted.  That is an easy mod to add to a 65-66 by simply slotting the hole.
64-1/2 -66
pedal support
67-68 pedal support
The 67 - 68 power brake pedal pivots from a 3/8" diameter bolt that goes through two holes up high in the support.
The holes locations are shown by two yellow markers in the picture.
Early 67 pedal supports did not have the 3/8" holes.  If adding the power brake pedal, the support must be drilled. Hole location is critical for the pedal to fit properly.
The 69 power brake pedal pivots from a 3/8" diameter bolt that goes through two holes up high in the support.
The hole locations are shown by a yellow marker in the picture.
The manual brake pedal pivots from the pot metal bushings.
69 Mustang and Cougar
pedal support
70 Mustang and Cougar
pedal support
The 70 power brake pedal pivots from a 3/8" diameter bolt that goes through two holes up high in the support.
The hole locations are shown by a yellow marker in the picture.
The manual brake pedal pivots from the pot metal bushings.
Typical installation of brake pedal and stop light switch.
67-69 Midland (clamp type) power brake booster
Note curved end on the input shaft on the left.
67-69 Bendix (crimped type) power brake booster
Note curved end on the input shaft on the left.
This booster requires a spacer between the booster and firewall. 
67-69 Midland (clamp type) power brake booster
Note spacer on front of booster where master cylinder bolts on.
67-69 Bendix (crimped type) power brake booster
Note curved end on the input shaft on the left.
This booster requires a spacer between the booster and firewall.  Spacer is shown clearly in this picture.
1970 Bendix booster is identical to the 67-69 Bendix booster with the exception of the input rod being straight instead of curved.
This template is used to modify the firewall when converting from manual brakes to factory type power brake booster on 67-70 Mustangs and Cougars.
  Most important thing is the big hole for the booster must be raised up from the original master cylinder hole position.  Usually the hole does not have to be as large as shown, but it must be enlarged some or the booster input shaft and housing will bind up.

AS VIEWED FROM DRIVER SEAT
If your pedal support has WORN OUT BUSHINGS, click HERE for how to fix it.
If you want to add POWER BRAKES to your 65-68 Mustang or Cougar, click HERE for more info.
Updated 7-21-2009
The following pictures show how to modify a 67-68 pedal support to install an adjustable clutch pedal stop.

I sell the stop kit for $20 plus USPS Small Flat Rate Box shipping cost.

This stop is provided in my cable clutch kits that include the clutch pedal.  (CK-167-P).

The stop kit can be made adjustable on any 64-1/2 to 66 pedal support by simply elongating the existing square hole where the clutch pedal stop bolts on.  It also comes with the CK-165-P cable kit with clutch pedal.

64-1/2 pedal supports came from the factory with an adjustable pedal stop.