Brake Line Help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70-Chevy · 01-06-2020, 03:58 PM

After tearing my truck down 10 years ago to do a ground up with it, I've lost my memory on some things and how they go. Along with ordering newer parts a few years ago on Black Friday specials, I want to make sure I'm doing this right.

WHAT I PREVIOSULY ORDERED
1) Willwood 4 wheel disc brake kit with the attached proportioning valve. Its part number WIL-261-13270-BK.
2) Classic Tubing line kit as attached, part number CST-CT1027-SS.

WHERE IM AT IN THE BUILD
1) Disc brakes all installed.
2) Main line routing complete.
3) Trying to connect lines to the proportioning valve.

QUESTIONS
1) Has anyone else used this proportioning valve? There is an adjustment on the backside that I assume is used to adjust the pressure for the rear wheels.
2) Please confirm, the from port on the proportioning valve is for the front wheels, correct?
3) And the rear port is for the rear, wheels, correct?
4) The brake line kit did not come with a TEE to connect the line of the M/C and then split to the left and right wheels. Anyone know where I can order this TEE?

LS short box · 01-06-2020, 06:02 PM

I believe that prop valve has two out puts for the front brakes. So you run two lines to the front brakes. Best to give Wilwood a call.

**1971Stepside** · 01-06-2020, 06:31 PM

I just ordered this same MC and Prop Valve. Shipped today. If it doesn't come with instructions I will be interested in what you find out. Call AZPerformance and Travis will know.

roboticjunky · 01-06-2020, 06:57 PM

1. I have one like this one. Yes, the knob is to adjust the amount of pressure going to the rear brakes.
2. Output for the rear brakes is on the opposite side of the knob. The other two on the bottom of the valve are for the front brakes. If you are using only 1 line for the front brakes, then one of the front output ports will have to be plugged.
3. Yes. (see answer above)
4. Should be able to get a tee from a local auto parts store.

Here's instructions and a diagram of your valve.
https://www.wilwood.com/PDF/DataSheets/ds715.pdf

70-Chevy · 01-06-2020, 10:36 PM

Robotic,
What lines did you use from the PV? Did you make your own? Thanks for the input!

roboticjunky · 01-07-2020, 06:04 AM

I made my own lines out of nickel copper tubing. All the ports on that valve are 3/8-24 inverted flare.

I used 3/16" tubing for my front brakes and from my master cylinder. I used 1/4" tubing to my rear axle then 3/16" tubing to my rear brakes.

**bigmac73** · 01-15-2020, 02:05 PM

Chris
where did you get the fender emblems made for the big block

70-Chevy · 01-15-2020, 02:24 PM

A guy on Facebook makes them. They weren100 bucks for the pair. He can make anything you want.

01-06-2020, 03:58 PM	#1
70-Chevy -Chris Join Date: Sep 2002 Location: Moyock, NC Posts: 622	Brake Line Help After tearing my truck down 10 years ago to do a ground up with it, I've lost my memory on some things and how they go. Along with ordering newer parts a few years ago on Black Friday specials, I want to make sure I'm doing this right. WHAT I PREVIOSULY ORDERED 1) Willwood 4 wheel disc brake kit with the attached proportioning valve. Its part number WIL-261-13270-BK. 2) Classic Tubing line kit as attached, part number CST-CT1027-SS. WHERE IM AT IN THE BUILD 1) Disc brakes all installed. 2) Main line routing complete. 3) Trying to connect lines to the proportioning valve. QUESTIONS 1) Has anyone else used this proportioning valve? There is an adjustment on the backside that I assume is used to adjust the pressure for the rear wheels. 2) Please confirm, the from port on the proportioning valve is for the front wheels, correct? 3) And the rear port is for the rear, wheels, correct? 4) The brake line kit did not come with a TEE to connect the line of the M/C and then split to the left and right wheels. Anyone know where I can order this TEE? Attached Images __________________ 1970 Chevy C-10 P/U, Shortbed, Fleetside - 5/7 drop, 496, TH400, 12 bolt. BUILD THREAD - http://67-72chevytrucks.com/vboard/s...d.php?t=404481 2012 F250 Super Duty P/U - intake, exhaust, tuner, 4" lift with 35's 2017 Chevy Suburban (Wifes Car) - Fully Loaded & Stock "Some people spend an entire lifetime wondering if they made a difference in the world. But, the Marines don't have that problem." Ronald Reagan, President of the United States; 1985

01-06-2020, 06:02 PM	#2
LS short box Registered User Join Date: Jun 2015 Location: Carlos MN Posts: 2,138	Re: Brake Line Help I believe that prop valve has two out puts for the front brakes. So you run two lines to the front brakes. Best to give Wilwood a call.

01-06-2020, 06:31 PM	#3
1971Stepside Almost Satisfied Join Date: Mar 2002 Location: Springfield, MO Posts: 2,932	Re: Brake Line Help I just ordered this same MC and Prop Valve. Shipped today. If it doesn't come with instructions I will be interested in what you find out. Call AZPerformance and Travis will know. __________________ 1971 C10 Stepside. LSx 6.0 with BTR Stage IV, Speed Engineering Headers, 4L80e transmission w/3200 Circle-D Stall. 3.73. Posi. Purchased this truck when I was 17. I started the rebuild (or take apart) in 1993. I have drug it around all over the country in pieces. Finally back on the road in 2021. "I can't complain, but sometimes I still do. Life's been good to me so far."

01-06-2020, 06:57 PM	#4
roboticjunky Registered User Join Date: Oct 2015 Location: IN Posts: 209	Re: Brake Line Help 1. I have one like this one. Yes, the knob is to adjust the amount of pressure going to the rear brakes. 2. Output for the rear brakes is on the opposite side of the knob. The other two on the bottom of the valve are for the front brakes. If you are using only 1 line for the front brakes, then one of the front output ports will have to be plugged. 3. Yes. (see answer above) 4. Should be able to get a tee from a local auto parts store. Here's instructions and a diagram of your valve. https://www.wilwood.com/PDF/DataSheets/ds715.pdf

01-06-2020, 10:36 PM	#5
70-Chevy -Chris Join Date: Sep 2002 Location: Moyock, NC Posts: 622	Re: Brake Line Help Robotic, What lines did you use from the PV? Did you make your own? Thanks for the input! __________________ 1970 Chevy C-10 P/U, Shortbed, Fleetside - 5/7 drop, 496, TH400, 12 bolt. BUILD THREAD - http://67-72chevytrucks.com/vboard/s...d.php?t=404481 2012 F250 Super Duty P/U - intake, exhaust, tuner, 4" lift with 35's 2017 Chevy Suburban (Wifes Car) - Fully Loaded & Stock "Some people spend an entire lifetime wondering if they made a difference in the world. But, the Marines don't have that problem." Ronald Reagan, President of the United States; 1985

01-07-2020, 06:04 AM	#6
roboticjunky Registered User Join Date: Oct 2015 Location: IN Posts: 209	Re: Brake Line Help I made my own lines out of nickel copper tubing. All the ports on that valve are 3/8-24 inverted flare. I used 3/16" tubing for my front brakes and from my master cylinder. I used 1/4" tubing to my rear axle then 3/16" tubing to my rear brakes.

01-15-2020, 02:05 PM	#7
bigmac73 Senior Member Join Date: Mar 2012 Location: Chesapeake, Va Posts: 1,275	Re: Brake Line Help Chris where did you get the fender emblems made for the big block __________________ Mike 72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider. 421 SBC / TH350 3000RPM Stall Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks

01-15-2020, 02:24 PM	#8
70-Chevy -Chris Join Date: Sep 2002 Location: Moyock, NC Posts: 622	Re: Brake Line Help A guy on Facebook makes them. They weren100 bucks for the pair. He can make anything you want. __________________ 1970 Chevy C-10 P/U, Shortbed, Fleetside - 5/7 drop, 496, TH400, 12 bolt. BUILD THREAD - http://67-72chevytrucks.com/vboard/s...d.php?t=404481 2012 F250 Super Duty P/U - intake, exhaust, tuner, 4" lift with 35's 2017 Chevy Suburban (Wifes Car) - Fully Loaded & Stock "Some people spend an entire lifetime wondering if they made a difference in the world. But, the Marines don't have that problem." Ronald Reagan, President of the United States; 1985



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