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04-04-2024, 10:13 AM
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#1 |
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Registered User
Join Date: Nov 2020
Location: Perry, UT
Posts: 5
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Moraine Master Cylinder
I have a 1972 GMC C2500 with front discs, trying to find a rebuild kit for the master cylinder. The one I got from Dorman was to small (1.125"), I need 1.25" piston. I can't seem to find anything. PN on the MC is 5472003, anyone know of a source or if another PN fits in it's place?
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04-04-2024, 08:44 PM
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#2 |
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All stock and staying that way
  
Join Date: Jul 2003
Location: Elkland, PA
Posts: 2,084
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Re: Moraine Master Cylinder
The casting number 5472003 master looks just like the one on my 1972 Cheyenne Super 20.
 https://www.ebay.com/itm/38639294460...Bk9SR8TjwrvVYw
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1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion..  1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor...  2017 Sierra 1500 SLT 4WD, Black, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 67k miles, 3.6, 8L45, 3.23 LS, 18" wheels Last edited by 1970cstblazer; 04-05-2024 at 08:06 AM. |
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04-05-2024, 07:50 AM
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#3 |
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All stock and staying that way
Join Date: Jul 2003
Location: Elkland, PA
Posts: 2,084
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Re: Moraine Master Cylinder
Original GM part number is 2623214.
Raybestos has them MC39075 
__________________
1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 67k miles, 3.6, 8L45, 3.23 LS, 18" wheels |
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