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Old 09-02-2011, 05:07 AM   #3
lolife99
67-72 parts collector,…
 
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Join Date: Nov 2002
Location: Mid-MO
Posts: 22,717
Re: proportion valve?

The oem 71-72 prop valves have only 1 front line outlet.
(since the line has a tee fitting, down on the crossmember)
The 73-87 prop valves have 2 front line outlets, with two individual lines that run to each front wheel.
The 73-87 prop valve will work,... you just have to "plug" one of the front outlet ports.
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Keith

Convert to disc brakes.
http://67-72chevytrucks.com/vboard/s...d.php?t=444823
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