Installing Power Brakes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jarwood · 10-17-2011, 09:17 PM

Members,

I am wanting to install power brakes to my 72 GMC. Can anyone lead me in the direction of where to buy the parts and how hard the install is.

Thanks,
James

AustinScott · 10-18-2011, 01:10 AM

performance online sells a kit.
I just bought all new stuff from them to swap out my old stock power drumbrake setup.
It should be here by the end of the week.
I can post up some info when it arrives if you would like.

I purchased the below items..

Booster & MC Kit

Front Power Brake Line Kit

Disc conversion kit

Scott

fastwillie 696969 · 10-18-2011, 02:37 AM

are you keeping the rears a drum setup or disc brakes too
i got mine from cpp

hugger6933 · 10-18-2011, 07:22 AM

If you are gonna keep the current configuration[drum,drum] it would be a matter of pulling the m/c loose from the firewall. After that you would be ready for the booster install and then bolt the m/c back up to the booster.
There was a write up about two weeks ago on someone that went to a booster system and did'nt break the lines loose or anything like that so no bleeding was needed. It appears to me it is as simple as replacing the m/c because you just unbolt and place the booster in between. Then all that would be left is to plumb it by adding manifold vaccum

**bigsnookmaster** · 10-18-2011, 08:08 AM

Quote:

Originally Posted by hugger6933

If you are gonna keep the current configuration[drum,drum] it would be a matter of pulling the m/c loose from the firewall. After that you would be ready for the booster install and then bolt the m/c back up to the booster.
There was a write up about two weeks ago on someone that went to a booster system and did'nt break the lines loose or anything like that so no bleeding was needed. It appears to me it is as simple as replacing the m/c because you just unbolt and place the booster in between. Then all that would be left is to plumb it by adding manifold vaccum

It would currently be a disc/drum being a 72. You need the booster and correct rod that goes into the booster, with the bracket for the booster. You also might need a different proportioning valve, but I'm not sure on that. Good luck

oldblue1968chevy · 10-18-2011, 11:18 AM

You have the right MC and PROPORTIONING VALVE CURRENTLY.

Just get some brackets from the board/junkyard and a booster, if the booster is good then your lucky paint it up and run it, it its bad well you've saved yourself the $ for a core

hugger6933 · 10-18-2011, 11:57 AM

Sorry, still half asleep when I posted, but he still should have all he needs exept the booster, line,and brackets

68 IRON · 10-18-2011, 02:40 PM

Quote:

Originally Posted by Jarwood

Members,

I am wanting to install power brakes to my 72 GMC. Can anyone lead me in the direction of where to buy the parts and how hard the install is.

Thanks,
James

James, I was lookin' for this last week. Heres the link everyone is talkin' about.
http://67-72chevytrucks.com/vboard/s...d.php?t=221598
Looks pretty straight forward to me...I like easy!
Oh, and another thing.....Welcome to the board!

Jarwood · 10-18-2011, 08:23 PM

Thanks,

It does have disc front and drum rear. So I can use my current master cylinder and by a booster. Then after install bleed everything correct?

chevytruckluver · 10-18-2011, 09:05 PM

Welcome to the site from Texas!
If you will take the master loose from the firewall, and dont take the brake lines loose you wont even have to bleed the lines. Just slip the booster in between and bolt it all together.

**lolife99** · 10-18-2011, 09:26 PM

Just buy a 71-72 booster.
Look here in the classifieds to get the correct mounting bracket.
(You might even find a booster also)

10-17-2011, 09:17 PM	#1
Jarwood Registered User Join Date: Oct 2011 Location: Jefferson, Georgia Posts: 248	Installing Power Brakes Members, I am wanting to install power brakes to my 72 GMC. Can anyone lead me in the direction of where to buy the parts and how hard the install is. Thanks, James Attached Images

10-18-2011, 01:10 AM	#2
AustinScott Registered User Join Date: Dec 2007 Location: Southington CT Posts: 548	Re: Installing Power Brakes performance online sells a kit. I just bought all new stuff from them to swap out my old stock power drumbrake setup. It should be here by the end of the week. I can post up some info when it arrives if you would like. I purchased the below items.. Booster & MC Kit Front Power Brake Line Kit Disc conversion kit Scott

10-18-2011, 02:37 AM	#3
fastwillie 696969 ~Rest In Peace~ Join Date: May 2005 Location: CALIFORNIA NOR CAL Posts: 9,707	Re: Installing Power Brakes are you keeping the rears a drum setup or disc brakes too i got mine from cpp __________________ is it fast ? it has a lighting bolt donut? B___H please, I can remove 90% of your so called "beauty" with a kleenex

10-18-2011, 07:22 AM	#4
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,280	Re: Installing Power Brakes If you are gonna keep the current configuration[drum,drum] it would be a matter of pulling the m/c loose from the firewall. After that you would be ready for the booster install and then bolt the m/c back up to the booster. There was a write up about two weeks ago on someone that went to a booster system and did'nt break the lines loose or anything like that so no bleeding was needed. It appears to me it is as simple as replacing the m/c because you just unbolt and place the booster in between. Then all that would be left is to plumb it by adding manifold vaccum

10-18-2011, 11:18 AM	#6
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: Installing Power Brakes You have the right MC and PROPORTIONING VALVE CURRENTLY. Just get some brackets from the board/junkyard and a booster, if the booster is good then your lucky paint it up and run it, it its bad well you've saved yourself the $ for a core __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

10-18-2011, 11:57 AM	#7
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,280	Re: Installing Power Brakes Sorry, still half asleep when I posted, but he still should have all he needs exept the booster, line,and brackets

10-18-2011, 08:23 PM	#9
Jarwood Registered User Join Date: Oct 2011 Location: Jefferson, Georgia Posts: 248	Re: Installing Power Brakes Thanks, It does have disc front and drum rear. So I can use my current master cylinder and by a booster. Then after install bleed everything correct?

10-18-2011, 09:05 PM	#10
chevytruckluver Eat, Sleep, Drive a Chevy Join Date: Apr 2010 Location: the town of the cow, Texas Posts: 1,152	Re: Installing Power Brakes Welcome to the site from Texas! If you will take the master loose from the firewall, and dont take the brake lines loose you wont even have to bleed the lines. Just slip the booster in between and bolt it all together. __________________ Trey Silence may be Golden, but Duct Tape is Silver! 72 Short Step 57 "big window" short step

10-18-2011, 09:26 PM	#11
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,701	Re: Installing Power Brakes Just buy a 71-72 booster. Look here in the classifieds to get the correct mounting bracket. (You might even find a booster also) __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823



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