Disc Brake Proportioning Valve Problems - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72 GMC K1500 · 12-28-2005, 09:51 PM

I have a 1972 GMC K1500 with power disc brakes. The brakes were terrible so I started replacing almost all of the major components of the system. The old master cylinder had the front chamber plumbed to the rear portion of the proportioning valve and the rear was visa versa. I have since changed it to the configuration in the picture where the front chamber feeds the front of the valve. Is this correct?
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Name: 101_0174 (2).JPG
Views: 2270
Size: 53.1 KB

12-28-2005, 09:51 PM	#1
72 GMC K1500 Registered User Join Date: Mar 2005 Location: Castle Rock, CO Posts: 24	Disc Brake Proportioning Valve Problems I have a 1972 GMC K1500 with power disc brakes. The brakes were terrible so I started replacing almost all of the major components of the system. The old master cylinder had the front chamber plumbed to the rear portion of the proportioning valve and the rear was visa versa. I have since changed it to the configuration in the picture where the front chamber feeds the front of the valve. Is this correct? __________________ 1972 GMC K1500, sbc 350, turbo 350 Castle Rock, CO

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