Another proportioning valve questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Nima** · 06-06-2006, 12:34 PM

Hey all:
I couldn't find the answer to this question on the threads that I read. I changed the front to disc and i bought one of these new brass proprotioning valve. I read that I can connect the front brake lines seperately to the valve or I can just use of the the outlet and use a T fitting in the line. Is this correct? If yes, what are the advantages of disadvantages of each rout? I don't know if I could verbalize my question right!

Thanks

Americanrider · 06-06-2006, 01:52 PM

I have noticed that around 76 & up the P-valves used the 2 front lines from the valve, but they where mounted on the front crossmember. I don't know exactly when they changed the line routs, maybe as far back as 73?

71-72's have the single line that T's near the front crossmember and had the single front line from the P-valve which as we know was mounted near the MC.

06-06-2006, 12:34 PM	#1
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,178	Another proportioning valve questions Hey all: I couldn't find the answer to this question on the threads that I read. I changed the front to disc and i bought one of these new brass proprotioning valve. I read that I can connect the front brake lines seperately to the valve or I can just use of the the outlet and use a T fitting in the line. Is this correct? If yes, what are the advantages of disadvantages of each rout? I don't know if I could verbalize my question right! Thanks __________________ 1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner

06-06-2006, 01:52 PM	#2
Americanrider Registered User Join Date: Dec 2004 Location: NW, WA. Posts: 1,421	Re: Another proportioning valve questions I have noticed that around 76 & up the P-valves used the 2 front lines from the valve, but they where mounted on the front crossmember. I don't know exactly when they changed the line routs, maybe as far back as 73? 71-72's have the single line that T's near the front crossmember and had the single front line from the P-valve which as we know was mounted near the MC.



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