69 3/4 ton power drum brakes pro valve pic request
 

hey guy's i am going to be installing the correct booster on my truck..

some one along the line changed mine to a 1/2 ton model.

i need a picture of the pro valve and line connections of a 69 c20 so i can do this right one time..

here's a few pictures...i will be installing a Bendix (cardone) REBUILT BOOSTER

i have got the correct brackets after many moon's of searching..

the 1/2 ton booster has a longer shaft sticking out the back than the 3/4 ton does. i just want to see the line connections and provalve used.

THIS WILL CONVERT from a single diaphragm to a double diaphragm

1969 C-20 POWER DRUM BRAKES PRO VALVE PICTURE REQUEST

THANKS IN ADVANCE :metal:

Re: 69 3/4 ton power drum brakes pro valve pic request
 

ttt :)

Re: 69 3/4 ton power drum brakes pro valve pic request
 

not sure if this helps or not. i actually just changed out the master cylinder today. no power, though.

Re: 69 3/4 ton power drum brakes pro valve pic request
 

to the top. TTT
PLEASE anybody?

Re: 69 3/4 ton power drum brakes pro valve pic request
 

I dont think there is any diff between power and non power. That block basicly splits the front and rear and houses the warning light switch. The four wheel drum brakes do not use a proportioning valve. I think thats how it works. Even the disc trucks use the same prop valve between 1/2 and 3/4 ton. They are just plumbed different. If yours looks like GMCBubba you should be good to go.

Re: 69 3/4 ton power drum brakes pro valve pic request
 

my 70 k20 has a prop valve and so does my 66 mustang so yes drum/drum systems do need a valve. the one in gmcbubba's photo looks just like the one on my 1970 k20

Re: 69 3/4 ton power drum brakes pro valve pic request
 

Marc - what specifically do you want to see?

Re: 69 3/4 ton power drum brakes pro valve pic request
 

the valve and the way the lines are hooked up. :)
i ordered the booster last friday should be here soon, i just want to be ready.

i am hoping i don't have to swap lines from front to rear on the master cyl.

Re: 69 3/4 ton power drum brakes pro valve pic request
 

rage'nrat638
Here's a couple pics from my 69 3500 it's got factory pwr brakes and 4 drums. These were shot in the fffffreezing dark of night, good thing the flash worked. see if this works...

Re: 69 3/4 ton power drum brakes pro valve pic request
 

thanks man..thats the stuff..from the looks of it..i think my master cyl will work i just need to change the booster :metal:

thanks everyone!!! and of course i will save the pictures for future use :)

Re: 69 3/4 ton power drum brakes pro valve pic request
 

got the booster today...i am good to go. no need to reverse the lines. my master cyl will fit right on the new booster. thanks for the help guys. i will post pictures when it's installed for a FYI..:metal:

I HAVE NO CLUE :crazy: why someone would have installed a 1/2 ton booster on my truck single diaphragm. this new one is a dual diaphragm

Re: 69 3/4 ton power drum brakes pro valve pic request
 

got this dude installed every thing fit perfect. thanks to a board vendor for getting me the correct firewall bracket set-up.

installed the correct booster on my 69 c-20 that has not been correct for the four years i have had the truck.. it's great to have this problem strightened out. :metal:

Re: 69 3/4 ton power drum brakes pro valve pic request
 

what is that you have installed just south of the proportioning block in the brake line?

looks like a nice, easy swap. will it be that easy to just add power brakes to my manual set-up?