Hey Guys,

We put a new proportioning valve on my 72 Frame and its really close to the Header. They are almost touching, has Anyone had any issues with this?

When I put front discs on my car it came with a prop valve that mounted on the drivers side frame,it is really close to the header and at first I was concerned but it has been a bit over 2 years and has not caused a issue.

Hey Guys,

We put a new proportioning valve on my 72 Frame and its really close to the Header. They are almost touching, has Anyone had any issues with this?

AHHHHHHHHH lemmie see. I know! Move the valve.

AHHHHHHHHH lemmie see. I know! Move the valve.

YEA Thanks

YEA Thanks

Well short of denting the header pipe what else is there that you could do? It seems pretty obvious. It is just another approach.

When putting headers on people had all sorts of trouble getting around steering columns. They jacked engines up, unbolted motor mounts ....all sorts of stuff. Removing the column is an obvious answer that most people overlooked. In the final analysis removing the column is likely easier than other things that were done when installing headers.

Moving the valve is essentially the same approach.

Well short of denting the header pipe what else is there that you could do? It seems pretty obvious. It is just another approach.

When putting headers on people had all sorts of trouble getting around steering columns. They jacked engines up, unbolted motor mounts ....all sorts of stuff. Removing the column is an obvious answer that most people overlooked. In the final analysis removing the column is likely easier than other things that were done when installing headers.

Moving the valve is essentially the same approach.


Thanks for the reply, my fault. I was thinking more in the fluids in the system. Would the brake fluid break down and cause any type of breaking malfunction.

Yes, you are correct moving the valve would fix the issue and no worries.

Thanks again

Steven Rod.

Would the brake fluid break down and cause any type of breaking malfunction.

It will boil if it gets hot enough. That's why we "lose our pedal" if a caliper hangs up and overheats the fluid. Liquid cannot be compressed, thus the concept of hydraulics. Conversely, as soon as the fluid boils it creates gas which DOES compress and your pedal goes soft. Once you stop and it cools down your pedal comes back. Mine wasn't all that close to the headers but I moved the valve so that I didn't have to find out the hard way.

Thank you all, I will work on this issue.

Hey Guys,

We put a new proportioning valve on my 72 Frame and its really close to the Header. They are almost touching, has Anyone had any issues with this?
:confused:are the headers coated for heat reduction????
if yes i would not worry.....:thumbsup:

Mine is about an inch away and has been a problem. It does get hot, but I have never had a problem with pedal feel.

mine too is close but not in conflict (67). what they were real close to were the brake lines at the frame crossmember. since I have my motor out I made me some custom brake lines to go under the crossmember slightly further. would suggest some heat wrap insulation if it is a major concern for you.

We gear clamped a piece of header wrap on the pipe in the area of the valve. Seemed to do the trick.

Mine is actually touching and it hasnt caused any problems yet.

Mine is real close no problems at all

In Line Tube sells a conversion kit that locates the proportioning valve under the master cylinder. I've had the same problem in the past and in stop and go traffic (Woodward Dream Cruise) I would lose my brakes until I got moving again. The relocation kit is clean and functional. http://www.inlinetube.com/PDF%20catalogs/Chevelle%20Only%20Catalog%20150.pdf

Well I am pondering this same dilemma. Attached a pic of my 70 Malibu showing proximity to the new HEDMAN Elite shorties, which I bought to give me ground clearance since my car is now lowered. She has not been on the road since this conversion, but the wet test is this weekend. My block is the 1970 OEM dist. block with pressure sensor (I think just a differential pressure switch, to detect either end system failure). The GM sensor is awful close to the new header collector, so I'm afraid meltdown is imminent. For posterity, here is a picture of the BEFORE condition:

http://i699.photobucket.com/albums/vv357/DET17/IMG_0130.jpg