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    Results 1 to 3 of 3
    1. #1
      Join Date
      Dec 2007
      Location
      New York
      Posts
      146
      Country Flag: United States

      309 Master with 4 wheel Disc

      Can the original style 1969 disc/drum Master Cylinder "309" be used when converting rear drums to discs?

      69 Nova SS, 5xx, big Squishy CStraub cam, M-23W, 4.10 12 bolt.


    2. #2
      Join Date
      Nov 2004
      Location
      Dallas Texas
      Posts
      496
      Country Flag: United States

      master cyl

      as long as it doesnt have the residual check valve in the port- it hold about 2lbs of pressure so you have a "good" pedal with drums it may cause a slight drag on the disc pads that are supposed to float next to the rotor. that valve should be removeable.
      Rich
      69 Trans Am "TireBird"
      M6 / LS6 minitubbed DSE Sub
      C5 frt LS1 rear disc brakes
      https://www.pro-touring.com/forum/showthread.php?t=14992
      69 R/S Z28 302
      15 Camaro ZL1
      90 Formula next project

    3. #3
      Join Date
      Dec 2007
      Location
      New York
      Posts
      146
      Country Flag: United States
      Quote Originally Posted by zman1969 View Post
      as long as it doesnt have the residual check valve in the port- it hold about 2lbs of pressure so you have a "good" pedal with drums it may cause a slight drag on the disc pads that are supposed to float next to the rotor. that valve should be removeable.
      Thanks Rich
      69 Nova SS, 5xx, big Squishy CStraub cam, M-23W, 4.10 12 bolt.


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