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Thread: Camaro SS 4 piston calipers
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11-01-2018 #1
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Camaro SS 4 piston calipers
I have a 68 camaro with drums all around. I’m going to be installing some 4 piston Brembo off a 6th gen camaro. My question is what type off MC should I go with. I was thinking of going with a wilwood tandem MC. And adding a residual pressure vale for the drum rears. Just to note. I plan on adding rear disk some time in the future. Any help would be appreciated.
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11-02-2018 #2
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Don't need a pressure valve in the rear. Are you doing manual or power brakes?
Andrew1970 GTO Version 3.0
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11-02-2018 #3
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Pretty sure a 10 psi RPV is needed for rear drums....
Don1969 Camaro - LSA 6L90E AME sub/IRS
1957 Buick Estate Wagon
1959 El Camino - Ironworks frame
1956 Cameo - full C5 suspension/drivetrain
1959 Apache Fleetside
11-02-2018 #4
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Why? I thought those were only needed when the MC is mounted lower than the wheel cylinder?
Originally Posted by dhutton
Andrew1970 GTO Version 3.0
1967 Cougar build
GM High-Tech Performance feature
My YouTube Channel Please Subscribe!
Instagram @dr__efi
I deliver what EFI promises.
Remote Holley EFI tuning.
Please get in touch if I can be of service.
"You were the gun, your voice was the trigger, your bravery was the barrel, your eyes were the bullets." ~ Her
11-02-2018 #5
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Rear drums need some preload on them or they will not brake effectively. The preload keeps the pads just kissing the drums.
Don1969 Camaro - LSA 6L90E AME sub/IRS
1957 Buick Estate Wagon
1959 El Camino - Ironworks frame
1956 Cameo - full C5 suspension/drivetrain
1959 Apache Fleetside
11-02-2018 #6
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They are manual brakes. And will stay that way. Is there a way for me to use the original master. With the new disk brakes.
11-12-2018 #7
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I would fully expect that you will be moving a much greater volume of fluid with 4 pistons each with, say, 40mm or so diameter versus 2 with about 12mm, and that the result would be that you'd need a larger bore MC. MAYBE a Corvette one would work, but still look the same. I have Corvette brakes on my GTO, but I don't think the pistons are all that big. Been a long time since I had them apart. The bore size difference is 1.125 compared to 1.000 for the drum brake cars, which is a little more than a 25% increase in fluid moving capability. Originally Posted by Titan1021
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