1968 Eldordo master brake booster and master cylinder

[Scot Minesinger]

My understanding:  In 1968 disc brakes were standard on the Eldorado and optional on RWD Cadillacs.  In 1967 disc brakes were optional on Eldorado only, not available on RWD.  In 1969 disc brakes were standard on all Cadillacs.  In 1968 the Eldorado power brake booster/master cylinder was unique (maybe same as a 1967?). 

Anyway need to replace or rebuild a 1968 Eldorado master brake cylinder and booster.  Prefer to replace with good re-build or new to avoid wait for rebuild of what is on the car.  Having some trouble finding one. 

Can this be changed to a 1969 or 1970, which is available readily as a re-built unit?  It would be OK if had to change a few fittings or provide relatively easy modifications, authenticity not critical, stopping is though.

[savemy67]

Hello Scot,

A Master Parts listing (sorry, I don't have one) would indicate any differences in boosters and M/C's, '68 - 70.  Do you have access to the '68 Eldorado?  Close examination of it and your '70 rear drive DeVilles should help you determine how extensive any modifications need to be.  I guess you have checked the usual suspects (RockAuto, USA Parts, etc.) for rebuilts with no luck.  In another post you indicated you might want to undertake rebuilding these units yourself.  Why not start now?

Christopher Winter

[Scot Minesinger]

Christopher,

Well, really have a lot on my schedule this year and thru August 2017.  I just cannot take on another responsibility right now.  I could go into it, but that is for another post on another forum.  Whatever does not kill you makes you stronger right, wait until you see me next.

The parts catalogs do not really always help with differences, guessing firewall is different on 1968 Eldorado compared to a 1969. 

[Glen]

Scot, my 68 ELDO has a 1970 Eldo master cylinder and booster in it.  It was a straight bolt in change.  I was driving the car as my daily driver and I could not find a good master cylinder and booster, so I took them out of the parts car and it works very well. 

[Scot Minesinger]

Glen,

Thanks!  That is exactly the info I was looking for.