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01-23-2013, 07:05 PM
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#1 |
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Building Dreams out of Dimes!
Join Date: May 2005
Location: Bonham, Tx
Posts: 892
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What proportioning valve for disk/disk conversion?
I changed out my rear drums for disks. Does anyone have a recommendation for what proportioning valve I should run or what will work?
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1981 Chevy short/wide. SB400 350th |
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01-23-2013, 07:54 PM
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#2 |
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Old Heap Driver
Join Date: Mar 2008
Location: Newport News, Va
Posts: 2,642
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Re: What proportioning valve for disk/disk conversion?
You'll also need a different master cylinder. I'd contact one of the aftermarket brake companies, Wilwood, etc and get recommendations.
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_____________________________ Bryan '99 Silverado 1500, 4.3, 5-speed, reg cab, short bed '50 Chevy 2DR Hard Top, 350/350, M2 Front End, 3:08 gear, cruiser. '40 F**d Sedan, all Chevy power, Heidt's front end, TCI rear, nice driver. |
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01-24-2013, 01:51 AM
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#3 |
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Registered User
Join Date: Jul 2010
Location: Lafayette, IN
Posts: 622
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Re: What proportioning valve for disk/disk conversion?
I used the Right Stuff PV72 when I converted my dually to rear disc. Got it from Jegs.
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01-24-2013, 09:02 AM
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#4 |
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Account Suspended
Join Date: Aug 2007
Location: USA
Posts: 1,223
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Re: What proportioning valve for disk/disk conversion?
you should be able to go to the local auto parts store and ask for a M/C for a 78 corvette. then look online do a search for a PV4 porpotioning valve and then your good to go.
here Iv used this guy before. http://compare.ebay.com/like/2501981..._lwgsi=y&cbt=y |
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01-24-2013, 11:16 AM
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#5 |
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Registered User
 
Join Date: May 2005
Location: Tallahassee Fl
Posts: 773
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Re: What proportioning valve for disk/disk conversion?
It will work with the existing setup. I swapped to disc when I swapped out my 10 Bolt. I cannot imagine it working much better than it does, but I am not a brake engineer.
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01-24-2013, 01:41 PM
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#6 | |
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Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,230
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Re: What proportioning valve for disk/disk conversion?
Quote:
 K
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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01-25-2013, 07:14 AM
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#7 |
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Registered User
Join Date: Sep 2010
Location: Lake Havasu City Arizona
Posts: 863
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Re: What proportioning valve for disk/disk conversion?
You should also change the combination valve located on the front crossmember. The factory one contains a residual pressure valve for the rear drum brakes which is not ideal on a disc brake. Wilwood makes a combo valve with an adjustable prop valve all in one. Speedway Motors sells one also. The one mrhino links to is also a great option. Wilwood makes a nice adjustable that you can add to any brake system. And you still need to change the master. I used the corvette master (manual non power) for several years on my old C10 with Lincoln rear disc worked good.
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