1970 GS 455 Drum Brake Master Cylinder Part Number

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

  1. Brett Slater

    Brett Slater Super Moderator Staff Member

    I'm not sure if this is original to the car but looking at it's condition and factoring in that it was the first thing to go when I got it up here last year, I'm assuming it is?

    So, what say you?

    20181208_191228.jpg
     
  2. CJay

    CJay Supercar owner Staff Member

    Does it have bleeder screws? And is there a 2 digit code stamped in the small machined area at the front?
     
  3. Brett Slater

    Brett Slater Super Moderator Staff Member

    Stand by....
     
  4. Brett Slater

    Brett Slater Super Moderator Staff Member

  5. Brett Slater

    Brett Slater Super Moderator Staff Member

    There's some code on there but it's impossible to make out.
     
  6. CJay

    CJay Supercar owner Staff Member

    swipe it with a razor blade
     
  7. CJay

    CJay Supercar owner Staff Member

    Is that on your kitchen counter? lol
     
  8. Brett Slater

    Brett Slater Super Moderator Staff Member

    Maybe....
     
  9. dl7265

    dl7265 No car then Mopar

    Repo goes in da dumpster . You need a “
    CT “ .
     
  10. Brett Slater

    Brett Slater Super Moderator Staff Member

    As well as a different part number.

    20181209_075532.jpg
     
  11. CJay

    CJay Supercar owner Staff Member

    Brett using his newly printed assembly manual!
     
    Brett Slater likes this.
  12. Brett Slater

    Brett Slater Super Moderator Staff Member

    This thing is amazing!!
     
  13. CJay

    CJay Supercar owner Staff Member

    Now all you need is a parts and illustration manual!
     
  14. Brett Slater

    Brett Slater Super Moderator Staff Member

    There's another one??
     
  15. mrolds69

    mrolds69 "The Cure"

    Afraid so...lol
     
    Brett Slater likes this.
  16. CJay

    CJay Supercar owner Staff Member

    The parts and illustration manuals are the ones that the Buick dealer would use to look up parts. They come in really handy.
     
  17. Brett Slater

    Brett Slater Super Moderator Staff Member

    You mean the huge one that's like a foot thick?

    I have that one. My father calls it the bible.
     
  18. copperheadgs1

    copperheadgs1 copperheadgs1

    The assembly number isn’t neccesarily the casting number but it might be.
     
  19. Brett Slater

    Brett Slater Super Moderator Staff Member

    Weirder things have happened.

    Part of me thinks this might be original to the car, especially considering the previous owner only put 8K miles on it in the 36 years he owned it.

    I'd have to ask if he could recall replacing it.
     
  20. Mike Trom

    Mike Trom Platinum Level Contributor

    I thought all of the original master cylinders had bleeders on the side and the repo's did not? I had my original rebuilt since all of the repros did not have the bleeders.
    CT was the code for mine I believe but that was for a '68.
     
    dl7265 likes this.

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