Boosters can be adapted but a stock booster, that's specifically designed for the particular vehicle, is the best choice for a '67 - up Mustang.

The reason the stock booster, for a '65/'66 model, isn't a good choice on them is because the mounting bracket sets the booster outward from the firewall. With it, there isn't enough room behind the drivers shock tower to install a dual reservoir MC onto the stock '65/'66 booster.

Last edited by ultrastang (5/11/2014 3:18 PM)

I totally agree the factory equipment booster is best for 67-70 Mustangs.  I keep the Bendix boosters in stock and sell them exclusively with my 67-69 power brake kits.  You have to have the factory adapter plate, a stamped steel spacer that goes between the booster and the firewall.  Rebuilt boosters do not come with the plate normally.   I also have the plates and they are included with my boosters. 

In my opinion, the Bendix is a better booster and does not have a bunch of small parts attached to it like the Midland does.

MustangSteve wrote:

I totally agree the factory equipment booster is best for 67-70 Mustangs.  I keep the Bendix boosters in stock and sell them exclusively with my 67-69 power brake kits.  You have to have the factory adapter plate, a stamped steel spacer that goes between the booster and the firewall.  Rebuilt boosters do not come with the plate normally.   I also have the plates and they are included with my boosters. 

In my opinion, the Bendix is a better booster and does not have a bunch of small parts attached to it like the Midland does.

Steve, I take it the stamped steel spacer is specific to the bendix booster? I don't have a spacer on my midland booster and the dog ear bracket is riveted to the back of the booster housing.
If I went with your bendix kit, what else would I need to complete the install on a factory power disc brake car with an automatic? Does your kit have all the necessary gaskets and rubber boot? I won't need the pedal either.
 

I have a Midland booster and have two questions about it:
1) I would like to delete the spacer between the booster and the MC.  See attached pic of spacer. It appears this spacer allows breathing and pressure equalization for the large front hole of the booster.  If I delete the spacer the MC will seal against the rubber seal of the large front hole, thus not allowing breathing and pressure equalization.  How critical is the spacer and the breathing it permits?  Can I run the booster without the spacer and if so will there be any adverse affects?

2)  There is a curious star shaped spacer like thing inside the booster that sits between the booster pushrod and its "seat" inside the booster.  See pic.  It's made of 8 individual pie shaped metal pieces which are held in place by a circular rubber piece. I'm guessing this thing acts to slightly soften the initial contact of the booster diaphram as it makes contact on the booster pushrod.  Mine is broken as you can see in the pic.  Is this part necessary for operation of the booster? Can it be deleted with no issues? Can this part be purchased? 


Above: Booster to MC spacer.

Above: When the black plastic part is removed you can see the "slots" which allow breating action within the spacer.

Above: Star-spacer. This is ths sice which faces the MC and the plunger that goes into MC.

Above: Back side of star spacer.  Note the thicker rubber on this side.  Does this act as a cushion?


Above: My star spacer is broken.  Three of the pie shaped metal pieces have separated from the rubber part which should be holding them in place.
End post.

Last edited by 67StangMan (9/27/2015 3:26 PM)

HenryJ wrote:

Thanks ultrastang.
Finding an oem remanufactured Midland booster isn't too easy and the few I've seen are around $400 dollars. I'm trying to find a rebuild kit for mine as another option. Does anyone have any experience with using a bendix as a 'bolt in' replacement?
 

Booster Dewey rebuilt my Midland booster for $165 plus shipping. He does great work, but doesn't sell parts for self rebuilds. 
 

Thanks for the Harmon Classic Brakes link Brian.