1970 GS 455 Drum Brake Master Cylinder Part Number

Discussion in 'The Bench' started by Brett Slater, Dec 8, 2018.

  1. copperheadgs1

    copperheadgs1 copperheadgs1

    Brett it’s the same. Stop worrying.
     
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  2. copperheadgs1

    copperheadgs1 copperheadgs1

    I have one of those tractor style dipsticks around as well.
     
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  3. copperheadgs1

    copperheadgs1 copperheadgs1

    EF550277-9888-4DA7-B0DC-9E5A0A840802.jpeg He is the answer. This is in the 70 Buick Service manual. Only two stamps were used in 70 for A body. CT is only one for drum. Same for power and manual. EA is disc. Can’t believe I forgot that was there
     
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  4. Brett Slater

    Brett Slater Super Moderator Staff Member

    What do you know....
     
  5. BYoung

    BYoung Stage me

    Interestingly, that chart is nowhere to be found in the 1971 Service Manual.
     
  6. copperheadgs1

    copperheadgs1 copperheadgs1

    You are correct. I looked too.
     
  7. copperheadgs1

    copperheadgs1 copperheadgs1

    Interestingly Olds used the same CT code in 70 for drum D433F3B3-1AD5-4443-A583-CA950C762DFD.jpeg but disc brake was different because Olds started using single bale master starting in 69 I believe. It is code EB and if memory serves me correctly 71 Buick disc was EB as well.
     

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