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10-07-2008, 04:52 PM | #1 |
Registered User
Join Date: Aug 2008
Location: Summerville SC
Posts: 217
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Master Cylinder and Proportioning valve
Alright I am in the middle of doing my disk brake conversion and have read other threads about it but am still a little lost. I am doing a complete disk brake swap. I have wilwood disk brake conversion on the rear. And a performance online kit for the front that uses Chevelle rotor and Camaro calipers. My question is the truck had complete drum brakes. So I know that the proportioning valve needs to be changed for the disk but will I have to change the Master Cylinder. Some people have told me to use a corvette master cylinder. Is this a good idea.
Here is one I saw on ebay. The truck is a 70 C10 SBC, TH400, Posi Rearend http://cgi.ebay.com/ebaymotors/63-67...=p4506.c0.m245 |
10-09-2008, 08:33 AM | #2 |
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Join Date: Nov 2007
Location: Baltimore, Ohio
Posts: 65
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Re: Master Cylinder and Proportioning valve
Disc brakes need more fluid to work as compared to the wheel cylinders. You will need a master cylinder designed for 4 wheel discs. And Dual reservoir, for saftey issues.
Depending upon the calipers, you'll need either a 15/16" bore, 1" bore or 1 1/8" bore master cylinder. I'd suggest that you call both companies that you bought parts from and tell them what you have. They should both be able to tell you which bore you'll need. |
10-09-2008, 04:50 PM | #3 |
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Join Date: Oct 2006
Location: fort worth texas
Posts: 395
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Re: Master Cylinder and Proportioning valve
im going back manual with 4 wheel disc. i found master cylinder at autozone 30 bucks. 73 corvette.
Last edited by prostreet1967; 10-09-2008 at 04:55 PM. |
10-16-2008, 08:22 PM | #4 |
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Join Date: Oct 2002
Location: Wa. State
Posts: 352
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Re: Master Cylinder and Proportioning valve
When I converted to "stock" 4 wheel disk on my 72 K5 I used a 3/4 ton master/power booster, and stock prop. valve. The rears lock way before the fronts so I think an adjustable prop. for the rear circuit might be a good idea....
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