Hey guys, I took a look under my hood this morning and noticed that under my master cylinder and booster is what looks to be a proportioning valve. The guy I bought my rear end from gave me the piece and it looks exactly the same as what I have in my car already. My question is since I have drum brakes now and the rear that I'm putting in (the 9 bolt posi with disc brakes) I'm assuming I have to change the proportioning valve anyway correct? I didn't think that it would have been there since I have drums in the rear but I just want to make sure before I do the swap and blow my car up. You guys have been great and thanks for all the help.

 

Change to the proportioning valve for the 9-bolt rear and you will not blow anything up. The bias is differnet for drums & discs.

 

Thanks blackz87 atleast now it will easier then I thought. I thought I would have to change everything around under the hood.

 

I hope you also got the parking brake assembly for the 9-bolt. That was another important item when I swapped in my 9-bolt.

 

Yep he gave everything for it including the sway bar and rear springs with the bushings. I'm having the calipers rebuilt as we speak so everything will be good to go when I bolt her in. I can't wait.

 

If you change out the proportioning valve would you be interested in selling it? I blew out a rear wheel cylinder and mine is locked down and conveniently the part has been discontinued!!!!!!!

 

I got one I changed because I swapped rears to a disc brake. But the line configuration may be different. I will dig around and find it. Can you post a pic of your valve?

 

Digital Camera is down it has 2 lines on top 2 lines down and 1 line that is angled