My car is a 71 B-body. Is the Midland Ross power booster the same for drums and discs? I'm wanted to convert to discs (HD drums right now) but needing clearification if I can use the same booster, just change the master.

Thanks

Anyone?

My '68 B-body came with power drum brakes (Midland-Ross booster).

I did the front 11-3/4" A-body disc brake swap.

Finding a '67 and up Bendix disc brake booster is the next step if your looking to go the OEM route.

I found a Bendix disc brake booster from a 1967 C-body.

Booster Dewey is rebuilding it right now.

He's changing out the C-body input shaft to a b-body input shaft ($40).

As a side note, early C-body boosters used a different vacuum check valve, a twist-to-lock type, cogged hole in front cover.

Later b-body and Hemi-style boosters used a push-in type valve, round-hole in front cover.

Raybestos makes the Hemi style which can be had on Amazon for $11.

http://www.amazon.com/dp/B000C6ZPVG/ref=pe_175190_21431760_M3T1_SC_dp_1

The C-body valve I found NOS (picture attached).

Front Bendix booster covers are interchangeable and Mr Dewey offered me that option for +$50. I declined since I had the correct valve.

Aside from that, you just need to purchase a 4-bolt disc brake master cylinder and an adjustable proportioning valve for the rear brake bias adjustment.

There's more than one way to skin this cat, but in my case, I tried to keep it looking stock.

John

Running the original drum brake booster is a detriment, as it does not produce enough assist for disc brakes.

I recommend installing the new reproduction Bendix dual diaphragm booster.

BTW, I carry all the conversion parts including the repro Bendix booster and 11.75" caliper brackets. E-mail me if you are interested.

I just called Dewey's Booster Exchange and talked to them about my midland Ross booster. He told me that they are the same and work just fine. I just did the same front brake conversion as you for my 71 bee. I would think he would be the guy to know if they work

The Bendix booster works nicely with a disc/drum brake system in heavy cars. Originally, that was the primary application.

WIth this application how much vacuum is needed.

The Bendix booster is smaller in diameter and longer. It was used on Hemi cars, Imperials, C-bodies and '66-'70 B-bodies equipped with disc brakes.