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Master Cylinder: 67-77 GM Disc Front 1 1/8\" - GM Approved (read notes)
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Note: NOT FOR  DRUM BRAKE FRONT ..

THIS IS FOR GM U.S. Single Piston DISC BRAKE FRONT

BORE IS  1 1/8"

1967-1977 Cast Iron with Bleeders 1-1/8" Bore; Deep Hole 9/16" & 1/2" Ports on Left Side with Bleeder Valves

Licensed GM Restoration Part Exact Copy of Original w/ casting number 5468309

For those with a need for a original casting master that is on SOME of the later 60's & early 70's GM vehicles.  

   Rear pipe thread is larger then the FRONT pipe thread as normal.

  This is Correct for early years with FACTORY DISC BRAKE OPTION.. not 1 inch.

   NOTE.. so you don't miss this or get confused.....In the transition years to front disc.. many boosters had a LONG pin push rod  coming out of them..but they gave away to a industry wide SHORT pin, which normally  signified the booster was for a Disc Brake car.  

   SO.. (stay awake now plz)..some people over the years welded a bit of pin extension onto the booster (desparate) or cut it down.

   No need to worry with this Master as it comes with a removeable bullet type sleeve (shown above) in the MC piston bore supplied for optional use.. .. to allow for short pin indent boosters  or visa versa - ... or pull the sleeve and its accepts the long booster piston rod.

    Note: The casting # is:  5468309, Exact Copy of Original w/ casting numbers.

    Note: This is a more correct for early 67-72 era cars that had FACTORY disc brakes...

     This is a GM Approved copy of what is on SOME GM vehicles from around 67 to 77.. easily spotted by the use of individual bleeders for front & Rear chambers of the master.

  Note: Bore: 1 1/8th inches..  (drum front used 1 inch so not this master if you have drum brakes.)

   Note: Cast Iron with Bleeders ;  9/16" & 1/2" Ports on Left Side with Bleeder Valves.

 Licensed GM Restoration Part.

 

 


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