Jason Coupe DeVille Resto - Rebuilt Original Power Brake Booster and Master Cylinder Installed

I've had a newer aftermarket power brake booster and master cylinder in my 64 Coupe DeVille the past few years and it has very few miles (and on the way to good home now), and has been a great brake setup, but as I continue to restore my car to an "Original Look" this was one of the areas I wanted to return to original in appearance.   It is also one of the areas I would get dinged a point or two when I take the car to the Grand National for Judging, and I  just like the original setup better anyway! I've had an original rebuilt Delco Morraine waiting to go in my 64 for well over a year and finally got around to installing it this week.

According to the shop manual the Delco Morraine is zinc plated. It doesn't list it as yellow zinc or silver zinc.  My booster and master cylinder came silver-grey which is the natural color of zinc anyway so I think I'm in the ballpark!  Also looking at Fig 6-10 in the shop manual the cap looks a little lighter and the hold down clamp is black.  The cover was scruffed up a bit anyway and painted it with the Tank Tone paint I bought from Eastwood sometime back, and painted the hold down clamp black. I put a washer beneath it to protect the paint until it cures more.

I have a car show this weekend and was a bit nervous about removing and replacing the brakes booster and master cylinder, but all is installed, brake system has been bled and all is working perfectly!  I used a vacuum pump to bleed the brakes which was a first for me, and now I'm asking myself why I didn't use this method 30 years ago!

 Below are pictures of the aftermarket setup I have had in the car, the rebuilt original Delco Morraine setup I've had waiting in the wings for over a year to installed, and everything installed in the car and ready for this weekend's meet-up and car show with the NC Eastern CLC Members in Clayton, NC.





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Comment by Eunan on August 9, 2022 at 7:44am

Will do.

Hopefully I get the booster installed in coming weeks...

Comment by Mike Travers on August 8, 2022 at 3:36pm

Eunan - Thanks for the reply. Your information is indeed very helpful. Jason got me fixed up with a rebuildable unit but I may still purchase a new unit from O'Reilly. Please keep me posted once you install yours so I can check on the fit & finish.

Comment by Eunan on August 8, 2022 at 2:04am


Mike, yes, I found the Delco brake booster.

I have a 63 Deville but the 64 booter will work,

I have not installed it yet, but it should be good the first one I got was assembled sideways so had to order it again. 

I got it at Oreilly Autoparts you have to be careful ordering it won't come up in their system.

They have to order direct form the vender some of the workers have no idea how to, so you have to find the right person i went to 3 stores before they ordered the booster.

The Part number is 54-71301 

Hope this helps...


Comment by Mike Travers on July 22, 2022 at 9:51pm

Eunan - Did you ever find a 64 Delco booster? I'm in need of a Delco booster for my '63 but it sounds like a 64 Delco would work, as well.

Comment by Eunan on May 30, 2022 at 9:58am

Yes, that's the information I needed. I ordered a 64 booster (Delco) but the measurements at the fire wall were 3 9/16" side to side and 3 3/4" top to bottom. So, I'm guessing jurying assembly the casing got put together wrong

I've ordered another booster hopefully the next one fits 

Thank you for the information very helpful...

Comment by Jason Edge on May 30, 2022 at 7:57am

What bolt pattern are you talking about? Booster to car body or master cylinder to booster? 
The bolt pattern from booster to the car is the same regardless 1963 or 1964, Bendix or Delco.
The bolts/openings in firewall, center to center are approx 3 3/4" sided to side and, 3 9/16" top to bottom.
Since the original 1963 Bendix brake setup has 4 bolts from master cylinder to the booster, obviously, nothing else is going to mate up to it. That is a 1964 Delco, 1963, Delco, 1964 Bendix with 2 bolts from master cylinder to booster is not going to mate up to a 1963 Bendix... booster or master cylinder. It has always been my understanding that for a direct mate up you want to use the same brand --> Delco to Delco, Bendix to Bendix. I think I remember you can say attach a 1964 Bendix to Delco and vice versa with some mods. I think the rod length is the issue and has the be changed out but I have never done it, would be hard pressed to ever do it, and would instead try and find the right booster or master cylinder for your application or better yet buy a matched booster/mc pair.  There are placed that will rebuild these and if someone needs a core to farm out I have a few of these originals, but my stock is always changing.

For illustrations of the different original brake setups, see our Brake Illustrations and Pictures Help Page.   Here is one picture you will find there, the 1963 Bendix with the 4 bolts from master cylinder to booster.

Comment by Eunan on May 29, 2022 at 10:07pm

I'm aware there are different types of brake boosters but the bolt pattern on the back would have to be the same to bolt up to the car. I'm looking for the dimension off a 64 to see if they match

Comment by Tony and Ginny 429 on May 29, 2022 at 8:43pm

There or two kinds of brake boosters used in our Cadillacs

Delco and Bendix so you might be matching up  the wrong brand to your car 

Just my best guess ?

Bendix is difficult to locate at this point in time so the Delco booster  and MC are being used more for replacement these days 


Comment by Eunan on May 29, 2022 at 4:55pm

Someone was saying a 64 Deville brake booster would fit on a 63 Deville 

I ordered one, part 54--71301 but it doesn't fit it would fit sideways.

Can anyone confirm the bolt pattern on the 4 studs on the back of a 64 booster

The 63 is 33/4" across the top and 31/2" top to bottom center/center 

Comment by Tony and Ginny 429 on December 23, 2016 at 4:13pm
Nice job on the Escalade front brakes ( look pretty )
Saved a nice piece of change doing it yourself
Used the best parts available ( not junk like a shop might ) And mostly you know the job was done right - priceless
Not a hard job very rewarding to do and have fresh brakes is just a nice thing



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