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Old 03-26-2022, 03:28 PM   #1
Peanut74
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Join Date: May 2018
Location: Prattville, AL
Posts: 590
MC and Proportioning valve advise

Ok, now that the windshield is installed I working on the brakes. I am at the point to where I need to order a power master cylinder and an adjustable proportioning valve. I have read all the threads that I found on the site but they did not match my setup.

What I have:
-'67 cab/ pedals
-'71 frame/ All brake lines (3/16"OD front line, 1/4"OD rear line)
-'71 front disc brakes
-'71 power brake pedal rod
-Rear disc brakes (Single piston calipers)

What power master cylinder and adjustable proportioning would you recommend? Would like to stay with a OEM MC if possible.
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1967 C10 "Snowball" (Currently in a million pieces down from a bazillion)
1989 Toyota DLX pickup "The Hulk"
2012 Jeep JKU "Crush"
1976 Chevy short bed with a 327 and 3 on the tree (Sold it to buy the Blazer)
1971 Chevy Blazer (Sold it)
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Old 03-27-2022, 11:44 PM   #2
Peanut74
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Location: Prattville, AL
Posts: 590
Re: MC and Proportioning valve advise

Finally found a thread that had some useful information:

http://67-72chevytrucks.com/vboard/s...aster+cylinder

Looks like I should get a 77-82 Corvette MC or early GM, Autozone P/N NM1521. I will research them tomorrow and see how the fit up. As for the proportioning valve I think I will look at the adjustable Willwood valves. Will probably call them to help me sort out the one I need.
__________________
--------------------------------------------------------
1967 C10 "Snowball" (Currently in a million pieces down from a bazillion)
1989 Toyota DLX pickup "The Hulk"
2012 Jeep JKU "Crush"
1976 Chevy short bed with a 327 and 3 on the tree (Sold it to buy the Blazer)
1971 Chevy Blazer (Sold it)
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Old 03-28-2022, 07:59 AM   #3
Alex69c10
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Join Date: Feb 2022
Location: Merritt Island, FL
Posts: 55
Also in the same boat! It’s a bit of a nightmare to find. I just want something I can bolt to my booster with proportioning valve and will mate to my inline tube kit!

Surprising there’s few definitive threads on it.
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Old 03-28-2022, 08:50 AM   #4
Grumpy old man
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Location: Gods country East,Tn
Posts: 8,545
Re: MC and Proportioning valve advise

The disc drum CPP master , mates up to the stainless inline tube brake line kit .

https://67-72chevytrucks.com/vboard/...d.php?t=711288



https://www.inlinetube.com/products/sctb67d4

https://www.classicperform.com/Store...ck/6772BBD.htm

Double check part #'s before ordering .
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1967 Factory short bed - Old school
'71 - 350 / 4bolt / 487 heads / Edelbrock C3BX
Muncie M-22 4 speed / Hurst Comp plus
Factory 12 bolt posi 3.73 / 255-70-15
Smoothed firewall / Factory cowl induction
Power disc brakes / power steering / 3.5-5" drop
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