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Old 02-05-2008, 09:47 AM   #1
tcb-1
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Question 6 Lug Disc Brake Conversion Question!!!

okay guys, here's the story. Got my 6 lug, disc brake conversion from GMCPauls, thanks Amber! Got a proportioning valve from CPP. Good there too.

Now it comes to plumbing the proportioning valve. It appears as if I will have to run a line from each front brake to separate inlets into the proportioning valve. (My '69 only had one outlet for the front and one for th rear).

Okay, the lines run from each front brake caliper to a central tee at the frame and then ONE line goes up to the proportioning valve.


Now, am I going to have to remove the tee and run 2 separate lines to the prop valve? Will I need to get brake lines bent for a '71 - '72??

thanks gang!!!
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Old 02-05-2008, 10:38 AM   #2
71 super
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Re: 6 Lug Disc Brake Conversion Question!!!

Can you show a picture of the prop valve you have? It should have 1 line from front of M/C to valve and one line from back of m/c to the prop valve. These should travel down the frame and tee to the front lines and hoses and the rear line should follow the crossmember have a union near starter and travel to the rear of the truck. The 71-72 lines are very similar to the earlier models in routing , and there are NOT two lines coming from the front brakes to the prop valve, only one.
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Old 02-05-2008, 10:47 AM   #3
tcb-1
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Re: 6 Lug Disc Brake Conversion Question!!!

here's the instruction sheet:

http://www.classicperform.com/Instructions/PDF/PVK.pdf
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Old 02-05-2008, 11:29 AM   #4
Riveted1
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Re: 6 Lug Disc Brake Conversion Question!!!

"In some cases, the right front line will be
plugged off at the proportioning valve and the left front line
will go to a “T” fitting. From the “T” fitting, the front lines
then split off and go to the left and right wheels. "

Your question is answered right there!
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Old 02-05-2008, 11:34 AM   #5
tcb-1
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Re: 6 Lug Disc Brake Conversion Question!!!

OMG..... I only read instructions when I don't know what's going on. I think I should start reading post haste.....

I am a dork.

Thanks Riveted, I'm glad your there for me!
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Old 02-05-2008, 11:39 AM   #6
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Re: 6 Lug Disc Brake Conversion Question!!!

No problem, I'm definitely guilty of the same thing.... Sometimes it helps to have another perspective

Let us know how the install goes!
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Ground beef: A cow with no legs.

----------------
'66 Chevy SWB "Penny"
'67 Chevy Big Window SWB- aka "Pearl"
'72 Burb- "Betty" "It's not a hearse dammit"
'99 Chevy Ext. cab Silverado
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