HELP!!! Disc proportioning valve question

[bjohn3x]

Hey guys I need some help. I have a drum/drum valve on my truck, but have upgraded to discs in the front. I got a new disc/drum valve from a 76 chevy truck, looks like this:

It does not appear to have the correct amount of ports (1 extra), or doesn't seem to be a direct bolt in. I think it's because it is a "combination valve" that has metering built in. Anyways, please tell what ports are for what. thanks!

[71meangreenc10]

from left to right, (top left) plug it, (middle) inlet from front master cylinder, (right) inlet from rear master cylinder,
Bottom left-front lines
Bottom right-rear lines
Thats how mine is and I have the same valve as pictured.....

[arkracing]

Sounds right to me.

the front 2 - angled toward the front and the lower one go to your front lines, 1 to the Right and 1 to the left. I guess it would work if you plugged the top one...never thought about it.

[bjohn3x]

I think maybe in 1976 there is a separate line for left and right, but in 69, there are only two lines, 1 back 1 front.

71meangreenc10, thanks for the info, so on your truck the rear drums are connected to the big "adapter" looking thing in the back? It's a pretty big port, did you have to get another connector for it? Any pics?