The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

**1970cstblazer** · 07-07-2023, 01:30 PM

Per the 1979 parts book, the correct 1971-72 Blazer master cylinder with power brakes is 5472650, which is described as Moraine oval with two wire bails for retention. The master cylinder on my 1972 Blazer parts donor is like the one in the first post. My 1970 Blazer with front drums has the smaller unit as posted above.

Another pic of an untouched original 1972 Blazer from this forum:

A beautifully restored Blazer from a member of this board

07-07-2023, 01:30 PM	#4
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,330	Re: Is this factory master cylinder? Per the 1979 parts book, the correct 1971-72 Blazer master cylinder with power brakes is 5472650, which is described as Moraine oval with two wire bails for retention. The master cylinder on my 1972 Blazer parts donor is like the one in the first post. My 1970 Blazer with front drums has the smaller unit as posted above. Another pic of an untouched original 1972 Blazer from this forum: A beautifully restored Blazer from a member of this board Attached Images __________________ 1970 K/5 Blazer CST 4WD, Bronze, 93k ACT. miles, 350, 4 speed, positraction, 16.5" x 8.25" wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration in progress... 1972 Cheyenne Super 20 2WD, DK 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, 41k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 60k miles, 3.6, 8L45, 3.23 LS, 18" wheels Last edited by 1970cstblazer; 07-07-2023 at 02:08 PM.