1959 Chevy SWB Brake Upgrade questions. - Hot Rod Forum : Hotrodders Bulletin Board
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Old 10-05-2010, 01:27 AM
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1959 Chevy SWB Brake Upgrade questions.

I have a 1959 Chevy truck that has been Camaro Clipped before I purchased it. The problem is that the person that clipped it did not update the brake mastercylinder. Now I have had the O.E mastercylinder on it since 1999...and lets just say I have always had to leave plently of room between me and the car in front of me. All the complete brake conversion kits seem to cost in excess of $300 bucks. This is probably a fair price...but this is just an old rat rod. I really feel that a bracket could be made myself and any GM brake mastercylinder that is disk/drum from the 70's to 80's would work. I really don't need a power booster...and with 2psi residual valve and an adjustable combination valve. It would seem like I could put a decent brake system together for about $100 bucks. My question is...has anyone out there made there own bracket? I find them for about $80.00 bucks online just for the bracket. What specific brake mastercylinder would be best? Has anyone done this? Would it be better just to save up for the complete kit. I really want to build my own for the Lifetime warranty if you build it yourself.

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Old 10-05-2010, 02:17 AM
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wow...80 bucks for brackets.
the brackets i wanted for my conversion cost 400 bucks.
i settled for next best brakes w/ 100 buck brackets.

best to have 7/8" bore mc for manual disc/drum.
1" bores work ok; you just have to push pedal harder.

can use a drum/drum mc just be sure and remove the residual pressure valve from primary mc port.

reservoir size is not important. smaller reservoirs just need to be topped off when pads get thin.

get largest piston surface area calipers you can afford.
largest and widest rotors for the front.

residual pressure of 10psi for rear drum useful if not already built into your existing mc; will minimize pedal travel.

2psi disc residual not necessary.

adjustable proportioning valve useful if rears lock up before front brakes. can test your brakes before buying proportioning valve.

rubber hoses do not expand significantly like people thinks; typically rated for around 3000psi. no need for ss flex hoses.
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Old 10-05-2010, 03:53 AM
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Thanks

Thanks for the information. I was informed through various magazines that I need 2psi instead of 10psi because the brake mastercylinder is located below the cab and not on the firewall. Thanks once again. You seem very knowlegable on the subject.
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Old 10-05-2010, 11:31 AM
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If the mc is low elevation I would use 2psi residual pressure valve for the disc calipers. It won't hurt to use 2 psi for discs anyway.

Drums should have 10psi residual pressure valve. A drum mc should have 10psi residual pressure valve from the factory.

If you wanna use existing drum/drum mc verify primary residual pressure valve removed and secondary residual pressure valve installed. If mc has no residual pressure valves then I would add a 10psi residual pressure valve inline to the drums.
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