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- The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=4)

- - 1987 r30 proportioning valve (https://67-72chevytrucks.com/vboard/showthread.php?t=597009)

gmcdeadhead

09-16-2013 06:59 PM

1987 r30 proportioning valve

does any one no the gm part number for a 1987 r30 proportioning valve, thanks.

Keith Seymore

09-17-2013 08:39 AM

Re: 1987 r30 proportioning valve

I believe I do -

These are the brake system release charts that were used to release the parts for production. Scroll down on the 1987 chart to "combo valve":

http://67-72chevytrucks.com/vboard/s...d.php?t=510519

Looks like it's a 1257203 or a 1257087 (depending on wheelbase).

K

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