i'm about to convert to fron discs and install a brakebooster, i have a brakebooster, but i can't install it without doing some modifications .. what booster and master cylinder should i use on a 71 mach1 ?
Well, i have a manual transmission so the pedal should be the same.
What i'd realy like is the ford partno that should be stamped on the brakebooster that i should use (and the mastercylinder)
btw. anyone knows how musch less brake pressure rear drums should have compared to the discs ? since i couldent get hold of an original proportioning valve i had to buy one from wilwood, but thatone has knob on it so i have to adjust it myself ..
You will need a booster and master cylinder from a 71-73 Mustang with power discs. The pedal is different for power and non-power applications. The stud for the pushrod is in a different location by @ 2". If you can only find an automatic power pedal assembly, just trim the pedal pad down to the same size as your manual brake pedal. Use a cut=off wheel or a hacksaw/sawz-all.
http://www.Advanceautoparts.com lists a booster and master cylinder setup for a 71 Mustang for $127, part # 50-3402 by A1-Cardone. There is also a good pic of it there as well.
The power booster has 4 studs on the back. Your pedal support has 4 nuts welded to the inside to accept the bolts for the master cylinder and the seal plate. You will have to drill out these nuts, or get a power brake pedal support for a manual trans car, as the automatic unit does not have the clutch pedal pivot supports installed. I think I used a 3/8" drill to drill out the threads on one of the cars I converted to power brakes.
If you can't find the pedal locally, I have an automatic power brake pedal for sale. I also have used boosters, prop valves and master cylinders.
Also, the 71 and 72-3 cars used a different master, the only difference being the size of the line nut on the front port of the master. Keep this in mind when ordering brake parts and lines.
<font size=-1>[ This Message was edited by: Hemikiller on 5/29/02 12:47am ]</font>
and i think it will be Alot easyer to fit this type of booster than the one i have (from a 69)...
but what about the brakepedal ? what exactly is the difference in them ? is it yust the location of the connection, or does the arm itself look different ? i was thinking about moving the connection or welding a new.
if anyone have a pic of the pedal, please post it here
btw, what other donor cars have the same booster and master ? when i was at the yunk yard he had a booster from a 69 oldsmobile that looked alot like the pic at AdvanceAutoParts, is this the same ?
/71 Mach1, 351C, 4speed toploader
<font size=-1>[ This Message was edited by: zICRONIx on 5/29/02 4:16pm ]</font>