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Hot Rods Master Cylinder options for drums

Discussion in 'The Hokey Ass Message Board' started by thebearded1!, Feb 27, 2019.

  1. thebearded1!
    Joined: Apr 27, 2018
    Posts: 150

    thebearded1!
    Member
    from Maryland

    I've got a hot rod project i'm working the kinks out of it has drums all the way around and the master cylinder is leaking and needs rebuilt. Looking into the mc in the car, it's a dual mc with this cast number 5452810 says its a GM part. The previous owner told me he knew it was a gm part and possibly from a vette. This would mean it was made for all discs and doesn't have the residual valves for the drums. Rather than adding the valves to the lines and rebuilding the mc can anyone recommend a mc i can use for a 1600lbs roadster, 4 drums and mc below floor?
     
    lothiandon1940 likes this.
  2. 1932tub
    Joined: May 31, 2005
    Posts: 361

    1932tub
    Member

    I used one from an early 70's Torino, it had residual pressure valves fitted. I have a 9" and F100 front brakes
    works well. Bought the m/c new cheap as, not worth rebuilding anything.
     
    lothiandon1940 likes this.
  3. VANDENPLAS
    Joined: Dec 14, 2009
    Posts: 1,740

    VANDENPLAS
    Member

    Popular options are vette drum/drum master
    Or mustang drum/drum master.

    What wheel cylinders were used on the car?
    Best to match your master diameter to your wheel cyls.
     
  4. V8 Bob
    Joined: Feb 6, 2007
    Posts: 2,422

    V8 Bob
    ALLIANCE MEMBER

    JFYI, Corvettes never had a drum/drum master; they went from single drum to dual disc/disc.
     
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  5. VANDENPLAS
    Joined: Dec 14, 2009
    Posts: 1,740

    VANDENPLAS
    Member

    Then what am I thinking of ???

    Chevelle, nova maybe ?
     
    lothiandon1940 likes this.
  6. Heavy Old Steel
    Joined: Feb 1, 2019
    Posts: 50

    Heavy Old Steel
    Member
    from Virginia

    10-1329 master cylinder from 67 chevy C 10 pickup drum/drum front and rear. Has 1" bore. Commonly used for single to dual chamber conversions on older chevy trucks 30 bucks at Oreileys
    I bought one but have to finish running brake lines before I can test it.
    You dont run a proportioning valve with drum/drum setup.
     
    bobss396 likes this.
  7. A dual Nova or Chevelle master would be ok. So would a '67-ish Mustang master.
     
    lothiandon1940 likes this.
  8. ricko1966
    Joined: May 4, 2017
    Posts: 35

    ricko1966
    Member

    If no power assist beware of master cylinder bore diameter. Four wheel drum no power assist 1600lb car I'd look at a VW bug master cylinder,they had a remote reservoir, they never had power brakes the weight is comparable, they were all 4 wheel drum brake until they quit selling them in the U.S. and they used the same master from 1967 on.
     
    Last edited: Feb 27, 2019
  9. ramblin dan
    Joined: Apr 16, 2018
    Posts: 1,483

    ramblin dan

    I wanted to go to a dual piston setup and used a 1966 or later AMC master. Can't remember exactly what year or bore but it worked great in my 58. I'm sure someone will correct me if I'm wrong but I believe AMC was the one of the first car companies to implement the dual masters in the mid sixties.
     
    1oldtimer likes this.
  10. ricko1966
    Joined: May 4, 2017
    Posts: 35

    ricko1966
    Member

    I thought everyone went dual in 1967 by law. IDK
     
  11. V8 Bob
    Joined: Feb 6, 2007
    Posts: 2,422

    V8 Bob
    ALLIANCE MEMBER

    Cadillac was the first to use a dual master in '62. Not sure about AMC, but dual masters were DOT required in '67.
     
  12. wvenfield
    Joined: Nov 23, 2006
    Posts: 4,669

    wvenfield
    Member

    I used a 67 Chevelle. I imagine it's probably the same M/C others have already noted.

    Local parts store even had it in stock.
     
    lothiandon1940 likes this.
  13. 325w
    Joined: Feb 18, 2008
    Posts: 5,133

    325w
    Member
    from texas

    Mustang style had several bore size options. Used their 7/8's on several with good success.
    Their 1 inch was eaiser to find so used them.
     
    lothiandon1940 likes this.
  14. JeffB2
    Joined: Dec 18, 2006
    Posts: 7,462

    JeffB2
    Member
    from Phoenix,AZ

    Over in the 1952-59 Ford Social group the 1967-68 Mustang Drum brake master has been popular over the years no extra valves are needed, Autozone part # M1485 this is a rebuilt (why you ask ?) That way you will have a better chance of getting a USA made Bendix or Raybestos casting newer masters are almost always from India or China and there has been issues with some.
     
  15. thebearded1!
    Joined: Apr 27, 2018
    Posts: 150

    thebearded1!
    Member
    from Maryland

    Thanks for the replies everyone! Sorry I didn't respond i didn't get any notifications on this thread so i thought no one had answered. I was reading the casting number wrong and it turns out the MC that was in the car was from GM 68-70 camaro, chevelle, el camino, etc. I ended up ordering one from Rock Auto for that donor car and it worked out fine.
     
    wvenfield and lothiandon1940 like this.
  16. fordflambe
    Joined: Apr 9, 2007
    Posts: 352

    fordflambe
    Member

    Put this early camaro drum/drum non-power MC on my 31 Chevy years ago. Its much smaller than the corvette dual MC. Dont know how it would work with power or under floor?

    Im using a tri-five swing pedal to operate it.

    AUT_9305.JPG MasterCyl.JPG
     

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