I realize this has been discussed before, however it is not sinking in. My situation is that I have a 69 with stock power discs, a BB and Hedman Elite headers. The headers are about a 1 mm away from what, I understand as, the distribution block mounted on the frame. I have several questions:
1. Is it truly a Distribution Block mounted on the frame?
2. Is the proportioning valve mounted on the Master Cylinder? When I disassemble the car there was nothing mounted near the master cylinder, is it needed?
3. What does each of these valve/blocks do?
4. Is there a better solution to the header dilema other than beating my coated headers with a hammer? If relocating is an option does someone offer a relocation kit?
I have all SS lines from In-line Tube, however when I ask some of these questions to the tech line the guy acted like I was bothering him and did not reply to my email completely. The lines I purchased are for a 71-72 because I did not have the valve on the MC. This post is long and redundant, but I am spinning my wheels trying to figure this out. Photos would be appreciated. Sorry for the length of the post guys.

In 69 the prop. valve is mounted on master. I believe in 71 they went to a combo valve mounted on the frame. You could bend bracket slightly for more clearance. Most guys on the site have the same problem and I havn't heard of anyone with brake problems.

A stock '69 disc brake system should have a "metering valve" under the master cylinder. It was designed to hold off actuation of the front discs for a moment until the rear drums engaged.

You apparently don't have the metering valve. But you can drive safely without it. At most you might notice the front brakes engaging before the rears, but you shouldn't have any problems.

As far as distribution block goes, I don't know of any relocation kits.

Since I purchased an aftermarket valve and mounted it on the frame is it considered a combo? I believe it was from Ground Up. If so I guess I don't need the one on the MC, right??? I will have to verify my receipt with part numbers.
Thanks for the info so far...

A couple of things:

First off the stock valve that hangs under the MC is not a "proportioning valve". It's only purpose is what I said: it delays the onset of the front brakes for an instant. That's it. Like I said, you can get by without this piece...but it's nice to have.

Second, you say you've mounted an aftermarket Prop valve--where is it? Is it plumbed into the front lines or the rear? It should be on the lines going to the rear, because the rear will lock up before the fronts. The whole point of an aftermarket adjustable prop valve is to dial down the rear brake pressure till rear lock-up just stops.

The aftermarket prop valve that I have is mounted on the frame on the drivers side. The front and rear lines are both connected.

I think I got myself confused. All the aftermarket prop valves I've seen have one inlet and one outlet, with a knob to adjust the amount of pressure allowed through. It sounds like what you're talking about is an original design, non-adjustable proportioning valve. If what you got from Ground UP was a combination valve you should be okay, as it should also perform the "metering valve" operation of the old valve that was underneath the MC.

Excellent-I was sweating it out. Not the work but just the hassle. I do have an original style prop valve from GU. Again, I have not been able to access my part numbers yet, but I will verify. Thanks alot Larry.