The title pretty much says it.

The '67 had manual drums. I'm putting in '72 Chevelle front discs and '88 Camaro rear drums. I've got a '68 Corvette master, and the '72 Chevelle everything else.

I've got the distribution block for the '72, and the...shoot...the other stock valve that goes in the front brake line...metering valve?

So, if I'm going to all discs, do I just use the factory distribution block, ditch that (metering?) valve, and use an aftermarket proportioning valve in the rear line?

I should have the front brakes installed at the wheels soon, and then it will be time to move on to the master/booster and its attending lines and the rest of the mess, so I'd like to get all this figured out so I don't end up bending 20 sets of hard lines. I do so hate to bend hard lines!

The 71-72 power disc system should not have the prop valve that mounts under the master cylinder. They used a single combo valve that mounted to the frame. You don't need any valve in the rear line either, that was some goofy thing that they only did during the 70 model year. What you need is a line kit for a 71-72 and you should be all set.

Right. I've got the combo valve that mounts to the frame.

You're saying that even though I'm putting rear discs on it I don't need a valve in the rear line?

This is my expeirence and it works great for me. I have converted other vehicles to 4 wheel disc and have not been happy with the systems proportioning valve, so what I do on most of them is remove the "guts" from the proportioning valve and turn it into a manifold. It gives a much better pedal and looks stock, all the lines still go to the same places makes it easy if you buy pre bent lines.

throw out all the stock parts. buy a combination valve for 4 wheel disk brakes and add an adjustable valve in the rear line to fine tune the rear discs. the combination valve becomes the distribution block.

Thanks for the replies.

jbalch,
Where would a person be able to obtain one of thes combo valves? I'm sure the adjustable valve can be bought from Jeg's or Summit.

I don't have much hope of using prebent lines. I've got to "wire" in a line lock as well.

remember the inline tube web site that I mentioned before? they sell everything you'll need, the valve for 4 wheel disk cars along with the manual valve and every imaginable fitting and line you'll need.