Projects HELP 66 Olds Dual master cylinder conversion

Hi I'm working on a '66 Olds B body, full size, Delta 88. I just want to convert it to a dual master cylinder. I'm wondering if anyone knows of a dual master cylinder that can use the existing booster. I want to keep it mostly stock but would like the added safety of Dual master. My brakes went out last month, luckily I was in a residential neighborhood so the E-Brake got me by. Any help would be greatly appreciated.

 

67 was the first year for the dual master cylinder so I would try a 67 to 70 master cylinder.

 

I've got a 65 Dynamic 88 and put a 67-68 tandem master cylinder on it, the only thing you need to check is the "depth of the hole" in the back of the master where the rod pushes on. Some PB units used a longer rod meaning a deeper hole in the master. I am putting a # for one possible master. I also lived in Flagstaff for 5 years , sorry I ever moved. Was one of the people that built Buster's Restaurant.

RAYBESTOS Part # MC36236{#2536236} Professional Grade; Bore Size=1"
Power brakes; Bendix Master Cylinder

Pat

 

Thanks Pat, I'll order one and give it a try. Can the rods be changed? You're saying I need the shallow hole MC right? Don't know how long since you've been here but its a whole other town. you probably wouldn't recognize it. I still love it though

 

It depends on your power brake unit. They make a ; Bendix and a Delco Moraine PB unit the master is specific to that particular unit. If you take off the master you have now and look at the back of it it will determine which MC you need. To make the job easier you should go to a junk yard and get the distribution block and fittings from a non-disk brake GM car to facilitate the swap. I moved from Flag in 85 and went back a couple of times the latest being in 2004 when my son graduated NAU.

Pat

 

So that master worked great! Another question... Did you put a proportioning valve in it?

 

Yes I did mention that, on a drum brake car it's a distribution block and it makes it easier to run your lines front and rear

 

But it's just a straight dist block. Not proportioning valve?

 

Thats correct. It contains the switch to light up the light on the dash when the brakes fail.

Pat

 

Did you have to cut out part of your fender wall?

I don't see how else to get the brake line to clear. Btw there was an article lee last week I saw that said busters is closing.