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I have a 61 Uni that I am planning on doing a complete brake upgrade on. I do have a couple of questions that I have been unable to answer using "search".
-Where is the best place to pull vacuum for a dual-bowl power master cylinder upgrade? (I can't see any vacuum ports on the intake manifold or on the carb)
-If no port exists, is it better to tap into the intake manifold for vacuum, or to ad a spacer under the carb and get vacuum that way?
I just installed that unit on my '63 Unibody with the inline 6. On my intake manifold there was a fitting hole that was plugged. I got a brass fitting and ran the vacuum from there. You can see it in the pic.
It was a great upgrade and my (4 wheel drum) brakes work great now. A huge upgrade.
Do yourself a favor and inspect your wheel cylinders- mine were totally full of gunk and dirt. New replacements were less than $15 each.
I plan on replacing the entire brake system all at the same time. I have the disc brake conversion kit for the front, and I plan on replacing both rear drums, wheel cylinders, and hardware, along with all new brake lines.
Problem I see is that MC has the same size reservoir front and back. Which means its is set up for either all disc ( 4wd as in the Corvette it came from ) or 4 wheel drum. If you plan on using a disc/drum setup . . there needs to be a disc/drum MC. Also, if using this Corvette MC on a 4 wheel drum setup . . where is the residual valve needed for drum brakes?? Many times that valve was in the port of the drum brake MC. How have they incorporated that in the Corvette MC ??
I believe the one in the pic is specific to the drum/drum set-up. They are also available in a disc/drum and disc/disc set-up. They have the proportioning valve built in according to Classic Performance.
I ordered the one that is designed for the disc/drum setup...so we will see.
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