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Old 01-14-2018, 05:12 PM   #1
twp1
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1972 Blazer Rear Disc Brakes

Has anyone removed the rear drum brakes and installed disc brakes? What kit did you use and any other info will help! Would like to install disc on the back of mine.
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Old 01-14-2018, 05:34 PM   #2
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Re: 1972 Blazer Rear Disc Brakes

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Has anyone removed the rear drum brakes and installed disc brakes? What kit did you use and any other info will help! Would like to install disc on the back of mine.
Why?
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Old 01-14-2018, 05:39 PM   #3
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Re: 1972 Blazer Rear Disc Brakes

There may be a few more but....here's a few considerations:
Unless you're going with bigger tires and more mods...spend the money on something else....the front disc brakes do 80% of the stopping......stock or near stock...drums are fine...but:

If you use the stock axle with a kit, You will have to address e-brake if you want one...... if you swap in a later model with the disc and e-brake already on it....it may not clear the factory wheels...
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Old 01-14-2018, 05:39 PM   #4
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Re: 1972 Blazer Rear Disc Brakes

Why not?
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Old 01-14-2018, 05:40 PM   #5
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Re: 1972 Blazer Rear Disc Brakes

thanks for the info.
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Old 01-14-2018, 05:48 PM   #6
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Re: 1972 Blazer Rear Disc Brakes

LMC has a kit that will fit 15" wheels and has the e-brake cables! Has anyone used it?
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Old 01-14-2018, 09:10 PM   #7
Tom Vogel
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Re: 1972 Blazer Rear Disc Brakes

I used a kit from Wilwood, and they clear my 10x15” torque Thrusts, and they come with an emergency brake.
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Old 01-14-2018, 09:28 PM   #8
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Re: 1972 Blazer Rear Disc Brakes

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Why not?
Rear drum brakes are more than sufficient, and will give you less problems than rear disc. The biggest issue with rear disc is the parking brake.
The only advantage I could see is that it might look better if you have aftermarket rims.
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Old 01-17-2018, 10:11 PM   #9
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Re: 1972 Blazer Rear Disc Brakes

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Rear drum brakes are more than sufficient, and will give you less problems than rear disc. The biggest issue with rear disc is the parking brake.
The only advantage I could see is that it might look better if you have aftermarket rims.

I have aftermarket rims so Iím interested in this thread........
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Old 01-17-2018, 10:26 PM   #10
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Re: 1972 Blazer Rear Disc Brakes

GMC-YA68 installed rear disc and i would like him to post some pic's! And if anyone else has installed rear disc please let us know what kind and the pic's of process!!
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Old 01-17-2018, 10:27 PM   #11
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Re: 1972 Blazer Rear Disc Brakes

Tom,

can you post some pic's of yours being installed or installed?
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Old 01-17-2018, 11:32 PM   #12
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Re: 1972 Blazer Rear Disc Brakes

Captain fab makes a nice set up
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Old 01-18-2018, 01:13 AM   #13
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Re: 1972 Blazer Rear Disc Brakes

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GMC-YA68 installed rear disc and i would like him to post some pic's! And if anyone else has installed rear disc please let us know what kind and the pic's of process!!
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Captain fab makes a nice set up
I will pull a wheel off on mine this weekend. They worked out perfectly. I used an adjustable brake proportioning valve from Hydratech and Captain Fabs brackets, along with the Toronado calipers and it's been working flawlessly. Capt sends all the info on which rotors (i forget what I used, but he can chime in, or I will go find me receipt) and calipers to use in his invoice or email. Easy Peasy....
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Old 01-18-2018, 09:24 PM   #14
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Re: 1972 Blazer Rear Disc Brakes

I used CPP Big Brake Kit and they work great (even with 11 inches of vacuum)! The kit comes very complete with parking brake cables and hoses. I would buy again. The only problem I found was the fit of their rotors on the axles, I had to make 0.015" shims to center rotor on axle. I also have a set of Captain Fab brackets unused if anyone is interested.
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Old 01-19-2018, 12:51 AM   #15
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Re: 1972 Blazer Rear Disc Brakes

At some point in my blazer's life someone swapped in an old 14 bolt. I was redoing the whole brake system and decided I wanted rear discs but also wanted to have the drum in hat parking brake... So i replaced the axle flanges for the drum brakes with ones I had machined to mount late model discs on. I used the brackets, calipers and rotors from a lated model dually. Had to turn down the hubs to get the rotors to slide on. Probably would have been easier just to swap axles.
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Old 01-19-2018, 04:27 AM   #16
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Re: 1972 Blazer Rear Disc Brakes

Grab a late model Tahoe/Yukon/Sierra/Silverado 6 lug disc brake rear off craigslist. Remove all brackets and weld on some DIY4X spring perches. Parts available at any auto parts store... price range $250-$450
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Old 01-19-2018, 12:55 PM   #17
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Re: 1972 Blazer Rear Disc Brakes

If you want to part it together yourself you can use the rear calipers off a 77 Eldorado, they have a built in parking brake.
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Old 01-19-2018, 07:46 PM   #18
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Re: 1972 Blazer Rear Disc Brakes

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If you want to part it together yourself you can use the rear calipers off a 77 Eldorado, they have a built in parking brake.
the Eldorado calipers are small and only use a lever to apply pressure. the Tahoe calipers are twin piston and use a drum in hat emergency brake... that would be my preference.
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Old 01-19-2018, 11:04 PM   #19
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Re: 1972 Blazer Rear Disc Brakes

Do not back up with the parking brake on if you do the drum in hat axle (don't ask me how I know!).
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Old 01-30-2018, 12:48 PM   #20
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Re: 1972 Blazer Rear Disc Brakes

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the Eldorado calipers are small and only use a lever to apply pressure. the Tahoe calipers are twin piston and use a drum in hat emergency brake... that would be my preference.
What master cylinder and booster are you running with that set up?
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Old 02-01-2018, 03:14 AM   #21
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Re: 1972 Blazer Rear Disc Brakes

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What master cylinder and booster are you running with that set up?
So I have a unique setup. I have large twin piston calipers front and rear. I also upgraded to hydro-boost from the 2005 GMC 2500 that my rear axle came out of... I used a wildwood adjustable proportioning valve to be able to adjust as needed...

There is a lot of good information to read over here....

http://www.pirate4x4.com/tech/billavista/Brakes/
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Old 02-01-2018, 02:27 PM   #22
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Re: 1972 Blazer Rear Disc Brakes

I havent pulled the trigger on these yet but this is the option i was thinking
www.littleshopmfg.com

I talked to him and he said he can def get a setup that will work...
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Old 02-03-2018, 08:38 PM   #23
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Re: 1972 Blazer Rear Disc Brakes

That kit looks like it would be worth trying!!!!!
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Old 02-04-2018, 04:38 PM   #24
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Re: 1972 Blazer Rear Disc Brakes

https://www.littleshopmfg.com/gm-62-...-brakes-6-lug/

direct link. Price is right
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Old 02-12-2018, 09:00 AM   #25
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Re: 1972 Blazer Rear Disc Brakes

So I bought the Little Shop disc brake set up and the install went smooth and quick! Once I get the blazer back together I will let you know how they work!!
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