Brake Master Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Wilson_ · 09-02-2008, 05:15 AM

I have a question about my truck I just bought. Its a 67 gmc 2wd shortbed. It has disk brakes in the front and I was told that it did not come equipped with them from the factory. It does not have a booster and the brake master is leaking, can I just buy a brake master for a 67 with out a booster?

Thanks for your help

tommypic · 09-02-2008, 05:20 AM

The master cylinders are the same if I remember correct , just go to parts house tell them its for a 67-72 . they will want to know if its got disk . hope this helps

Wilson_ · 09-02-2008, 05:29 AM

Quote:

Originally Posted by tommypic

The master cylinders are the same if I remember correct , just go to parts house tell them its for a 67-72 . they will want to know if its got disk . hope this helps

Thanks for the reply, I guess I worded the question wrong. My truck has disks on the front. Do I have to use the booster? Because It does not have one right now.

Thanks again

Sport/Truck · 09-02-2008, 06:58 AM

Quote:

Originally Posted by Wilson_

Thanks for the reply, I guess I worded the question wrong. My truck has disks on the front. Do I have to use the booster? Because It does not have one right now.

Thanks again

No, you don't have to use one.

(here's an idea for your avatar

)

s/t

Longhorn Man · 09-02-2008, 08:10 AM

no you do not need a booster, millions of disk brake vehicles have been built without it.
You DO need to figure out what master cylinder you have, becouse a drum/drum master cylinder is NOT the same as a disk/drum master cylinder.

myoldchevytruck · 09-02-2008, 09:52 AM

Quote:

Originally Posted by Wilson_

I have a question about my truck I just bought. Its a 67 gmc 2wd shortbed. It has disk brakes in the front and I was told that it did not come equipped with them from the factory. It does not have a booster and the brake master is leaking, can I just buy a brake master for a 67 with out a booster?

Thanks for your help

Do you have any pics of the setup currently in your truck now?

sneakysnake · 09-02-2008, 10:42 AM

With discs up front I'd lean towards you needing a 71-72 but its possible that it may be newer than that. You should be able to take it to a parts store and match it.

MrBeast · 09-02-2008, 10:49 AM

If I was in your shoes, I would get a BMC for a 72 with front discs, that way you know it is going to work, does your truck have 5 lugs or 6?

Wilson_ · 09-02-2008, 03:02 PM

Quote:

Originally Posted by Longhorn Man

no you do not need a booster, millions of disk brake vehicles have been built without it.
You DO need to figure out what master cylinder you have, becouse a drum/drum master cylinder is NOT the same as a disk/drum master cylinder.

The PO said that the rear end was changed to a 72 (the rear end has leaf springs not coils) so maybe they switched the front end too?
not sure

Quote:

Originally Posted by myoldchevytruck

Do you have any pics of the setup currently in your truck now?

I will get some asap

Quote:

Originally Posted by sneakysnake

With discs up front I'd lean towards you needing a 71-72 but its possible that it may be newer than that. You should be able to take it to a parts store and match it.

LOL the parts stores IE kragen and auto zone do not have the smartest people working there, but thanks I will look around and see what I can find

Quote:

Originally Posted by MrBeast

If I was in your shoes, I would get a BMC for a 72 with front discs, that way you know it is going to work, does your truck have 5 lugs or 6?

Is the 72 MC/with booster a bolt on ordeal? It is 5 lug all around

Thanks for all your help guys!!!

Wilson_ · 09-02-2008, 03:04 PM

Quote:

Originally Posted by Sport/Truck

No, you don't have to use one.

(here's an idea for your avatar

)

s/t

I had that on another forum, and the pic was soo small the mods thought it wass a ballsac

MrBeast · 09-02-2008, 03:33 PM

Quote:

Originally Posted by Wilson_

Is the 72 MC/with booster a bolt on ordeal? It is 5 lug all around

Thanks for all your help guys!!!

If it is a 5 lug it has been converted to a 70-72, so the mc will work well with them because it is all OE equipment, 67-69's were 6 lugs in a 2wd.

Wilson_ · 09-02-2008, 04:58 PM

Quote:

Originally Posted by MrBeast

If it is a 5 lug it has been converted to a 70-72, so the mc will work well with them because it is all OE equipment, 67-69's were 6 lugs in a 2wd.

Sweet, just what I wanted to hear!!!

I will pick one up asap!

Next question, will i need to get a new proportioning valve?

Thanks

Here are the pics that were asked for

Wilson_ · 09-03-2008, 06:23 AM

I have another question
in the pic above there are studs going threw to the engine bay side
on the 72 master/w booster it is opposite they go into the cab

how do I go about mounting it? the studs would just hit each other. or do i have the wrong pic?

Thanks

Wilson_ · 09-03-2008, 06:43 AM

ok I have been digging around looking at pics and it looks like I need a bracket or spacer of some sort
As seen in this pic

Is this correct??

Thanks

**truckdude239** · 09-03-2008, 07:21 AM

yes you will need that bracket, check out the parts board as that is where everyone sells there stuff. or pay for a 25 buxs membership here which is good for a year and go over to the parts board and post a wtb over there. just remenber guys any selling in this thread will get it locked

i hope i helped

MrBeast · 09-03-2008, 08:13 AM

Quote:

Originally Posted by truckdude239

yes you will need that bracket, check out the parts board as that is where everyone sells there stuff. or pay for a 25 buxs membership here which is good for a year and go over to the parts board and post a wtb over there. just remenber guys any selling in this thread will get it locked

i hope i helped

That is spot on, you will need that bracket, the best thing you really can do is either find somthing here on the board, or go junkyard hopping and find all the goodies you will need.

tommypic · 09-03-2008, 08:25 AM

Wilson that will be the best 25$ you ever spent . I know I have learned alot on here and its worth that to keep this site up . O yea like truckdude239 you will need the brackets . here is a link to member selling what you need http://67-72chevytrucks.com/vboard/s...oster+brackets

msgross · 09-03-2008, 08:27 AM

they sell those combo booster/mc at autozone. I think they require a core charge if you don't have a rusty one to turn in. The combo package was only like $10 more than the booster itself. You will need to find the booster bracket with push rod for the pedal too...

gn4u2c2 had some for sale on the parts board...

09-02-2008, 05:15 AM	#1
Wilson_ Registered User Join Date: Sep 2008 Location: Santa Rosa, CA Posts: 451	Brake Master Question I have a question about my truck I just bought. Its a 67 gmc 2wd shortbed. It has disk brakes in the front and I was told that it did not come equipped with them from the factory. It does not have a booster and the brake master is leaking, can I just buy a brake master for a 67 with out a booster? Thanks for your help

09-02-2008, 05:20 AM	#2
tommypic Registered User Join Date: Jan 2008 Location: Piedmont , SC Posts: 728	Re: Brake Master Question The master cylinders are the same if I remember correct , just go to parts house tell them its for a 67-72 . they will want to know if its got disk . hope this helps __________________ My ZipCode = 29673 2008 Silverado Z71 LTZ Wrecked New Ride SOLD 71-72 Custom A/C Parts Truck < selling parts 67 Chevy ShortStep SOLD 67 GMC SWB Step <-- For Sell 67 Chevy SWB Step <-- working on 2000 Road King <-- SOLD 97 F150 my ride for now 2006 Escape wifes ride HELP SUPPORT THE BOARD http://67-72chevytrucks.com/vboard/payments.php Great How To Thread http://67-72chevytrucks.com/vboard/s...d.php?t=157669 Vendor Sites http://67-72chevytrucks.com/links/browselinks.php?c=2

09-02-2008, 08:10 AM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Brake Master Question no you do not need a booster, millions of disk brake vehicles have been built without it. You DO need to figure out what master cylinder you have, becouse a drum/drum master cylinder is NOT the same as a disk/drum master cylinder.

09-02-2008, 10:42 AM	#7
sneakysnake It's a catastrophic success. Join Date: Jan 2003 Location: Oklahoma Posts: 2,077	Re: Brake Master Question With discs up front I'd lean towards you needing a 71-72 but its possible that it may be newer than that. You should be able to take it to a parts store and match it.

09-02-2008, 10:49 AM	#8
MrBeast high-Tech Red Neck Join Date: Feb 2008 Location: Livingston, MT/On my boat WA/BC/AK Posts: 2,294	Re: Brake Master Question If I was in your shoes, I would get a BMC for a 72 with front discs, that way you know it is going to work, does your truck have 5 lugs or 6? __________________ "He used to be a pretty nice feller, now he's a welder!"

09-03-2008, 06:23 AM	#13
Wilson_ Registered User Join Date: Sep 2008 Location: Santa Rosa, CA Posts: 451	Re: Brake Master Question I have another question in the pic above there are studs going threw to the engine bay side on the 72 master/w booster it is opposite they go into the cab how do I go about mounting it? the studs would just hit each other. or do i have the wrong pic? Thanks Last edited by Wilson_; 09-03-2008 at 06:23 AM.

09-03-2008, 06:43 AM	#14
Wilson_ Registered User Join Date: Sep 2008 Location: Santa Rosa, CA Posts: 451	Re: Brake Master Question ok I have been digging around looking at pics and it looks like I need a bracket or spacer of some sort As seen in this pic Is this correct?? Thanks

09-03-2008, 07:21 AM	#15
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: Brake Master Question yes you will need that bracket, check out the parts board as that is where everyone sells there stuff. or pay for a 25 buxs membership here which is good for a year and go over to the parts board and post a wtb over there. just remenber guys any selling in this thread will get it locked i hope i helped __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

09-03-2008, 08:25 AM	#17
tommypic Registered User Join Date: Jan 2008 Location: Piedmont , SC Posts: 728	Re: Brake Master Question Wilson that will be the best 25$ you ever spent . I know I have learned alot on here and its worth that to keep this site up . O yea like truckdude239 you will need the brackets . here is a link to member selling what you need http://67-72chevytrucks.com/vboard/s...oster+brackets __________________ My ZipCode = 29673 2008 Silverado Z71 LTZ Wrecked New Ride SOLD 71-72 Custom A/C Parts Truck < selling parts 67 Chevy ShortStep SOLD 67 GMC SWB Step <-- For Sell 67 Chevy SWB Step <-- working on 2000 Road King <-- SOLD 97 F150 my ride for now 2006 Escape wifes ride HELP SUPPORT THE BOARD http://67-72chevytrucks.com/vboard/payments.php Great How To Thread http://67-72chevytrucks.com/vboard/s...d.php?t=157669 Vendor Sites http://67-72chevytrucks.com/links/browselinks.php?c=2

09-03-2008, 08:27 AM	#18
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: Brake Master Question they sell those combo booster/mc at autozone. I think they require a core charge if you don't have a rusty one to turn in. The combo package was only like $10 more than the booster itself. You will need to find the booster bracket with push rod for the pedal too... gn4u2c2 had some for sale on the parts board... __________________ The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer"



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