Author Topic: 70 Proportioning Valve  (Read 902 times)

Offline MR291

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70 Proportioning Valve
« on: September 13, 2007 - 10:44:13 PM »
I have upgraded my front brakes to discs and am now putting a proportioning valve on.  Is there a way to identify which valve I need.  Does not have to be correct but something I can use.

I currently have the one in the picture.  It has the numbers 3258924 and 3422936.

Appreciate it.
« Last Edit: September 13, 2007 - 10:47:09 PM by MR291 »




Offline Topcat

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Re: 70 Proportioning Valve
« Reply #1 on: September 13, 2007 - 11:05:30 PM »
http://www.inlinetube.com/Prop%20Valves/BLK252.htm

hope this helps.

In 1971 for GM and 1972 for Chrysler, the one piece combination valve replaced the multiple piece design. The combination valve keeps front and rear systems separate, splits the left and right front lines, houses the sending unit for the brake failure warning light and provides the proper brake line pressure for the front disc and rear drum systems. This is why it is important to know what is correct for your car and how your car can (or will) be converted from drum to disc. There are three basic disc conversions for 1967-70 cars: 1) Factory original conversion, 2) Combination valve conversion and 3) Adjustable valve conversion. Each conversion has its benefits. The staff at Inline Tube will help you determine the best disc conversion configuration for your vehicle. Valves, distribution blocks and dual master conversions are illustrated and listed below.


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« Last Edit: September 13, 2007 - 11:07:13 PM by Topcat »
Mike, Fremont, CA.


Offline Bullitt-

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Re: 70 Proportioning Valve
« Reply #2 on: September 14, 2007 - 08:43:18 AM »
would not the proper valve be dependent on the upgrade being done?   
Wade  73 Rallye 340..'77 Millennium Falcon...13 R/T Classic   Huntsville, AL
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Offline stinger

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Re: 70 Proportioning Valve
« Reply #3 on: September 22, 2007 - 05:01:18 PM »
I'm currently in the same boat,did the disc conversion,new master,going manual brakes/disc/drum.bought the stainless line kit and they don't fit the dist-block,the fittings are the wrong size.I was hopeing to use the dist.block and fit in an adjustable p-valve but it looks like I'll be looking for the correct dist-block and p- valve now.