Brake booster support brackets...help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

SIXT8LOU · 07-10-2015, 12:38 AM

I am im the process of disk conversion for my 68 C10...i could use a little help with the installation of these brake booster brackets. A few pics would really be useful, do i need both of them? I am using a 72 set up with a brand new booster/MC/port.valve set up from Brothers. thanks

dazza · 07-10-2015, 05:45 AM

Here are a few from before I pulled mine. First two are the same photo, just one highlighting where they are. Third one is a closer shot but I've highlighted where the upper end attaches. They don't show exactly where the upper one attaches to the firewall but I'm pretty sure it's right about where it is in the pics.
I'm sure I have others, would just have to do a bit of searching because I have somewhere between 8-9000 photos taken when pulling things apart.

SIXT8LOU · 07-10-2015, 10:03 AM

thanks alot, it looks like i have to use both of them,,,ive seen a few pics where only one bracket is used (the larger one) on C10s and the other one on k10s, but never both of them on the same truck. thanks again...i will continue to cruise the site for more pics...

dazza · 07-10-2015, 10:10 AM

mines a k10 btw.
I actually grew up in Norco too!

SIXT8LOU · 07-10-2015, 10:15 AM

thats great...you know what they say....Nor..co. is north corona..lol....hahaha

**HeavyD** · 07-10-2015, 11:45 AM

Is the firewall thatbflimsybto need both brackets? I get the one that supports under as the booster assembly does have some heft, but wasnt the side bracket overkill?

Has anyone seen the firewall area crack or anythi g from the weight?

BrianG · 07-10-2015, 12:09 PM

The one that is more tubular goes to the backside of the emergency brake bolt (69-72 style emergency brake actuator). If you have a 68 cab you won't have this bolt or the raised portion of the cab or even a hole for it, and in fact, the fuse block may or may not be in the way even if you were to try to put it there. I've seen lots of pictures of people adding the aftermarket power brake setups (usually the CPP ones) and have noticed that they don't run the brackets. I'd also be interested to know if they are really necessary.

Old school57 · 08-21-2025, 02:49 PM

I’m in need of both does anyone know where i can find them.

**MikeB** · 08-22-2025, 05:08 PM

71-72 C10 booster and support bracket.

ivory68 · 08-23-2025, 10:32 AM

I did the ECE front disk conversion on my '68. No brackets. Until now, I didn't know there were brackets for the newer years.

LNP · 08-23-2025, 10:51 AM

Does anyone know if a 69 C-10 is suppose to have one? My truck was manual brakes when I got it. I switched it to power disc using the CPP kit. If it does and someone can give me measurments for it I can make me one. Thanks

**MikeB** · 08-23-2025, 11:42 AM

Quote:

Originally Posted by LNP

Does anyone know if a 69 C-10 is suppose to have one? My truck was manual brakes when I got it. I switched it to power disc using the CPP kit. If it does and someone can give me measurements for it I can make me one. Thanks

My red truck in the above photos is a 69 that had manual brakes from the factory. The power brake version must have had a booster support bracket because I think the stud you see was already on the firewall. Or if it wasn't, a hole was there and I pushed a bolt though it from the inside.

It's been 30 years, but I think there was another bracket that I got from a junkyard along with all the 71-72 power brake parts. But I don't know where it goes.

Jim Boy · 08-23-2025, 10:04 PM

I have been running my 68 for 21 years without the brackets. No problems what so ever. Have a good one eh.

LNP · 08-25-2025, 09:53 AM

Quote:

Originally Posted by MikeB

My red truck in the above photos is a 69 that had factory brakes from the factory. The power brake version must have had a booster support bracket because I think the stud you see was already on the firewall. Or if it wasn't, a hole was there and I pushed a bolt though it from the inside.

It's been 30 years, but I think there was another bracket that I got from a junkyard along with all the 71-72 power brake parts. But I don't know where it goes.

Thanks. Any chance you could measure it for me? The stud at the firewall will be one of the parking brake pedal assembly studs.

**MikeB** · 08-25-2025, 04:09 PM

Quote:

Originally Posted by LNP

Any chance you could measure it for me? The stud at the firewall will be one of the parking brake pedal assembly studs.

Stud to stud is 12.5". Bracket has slotted holes at each end.

LNP · 08-26-2025, 09:39 AM

Quote:

Originally Posted by MikeB

Stud to stud is 12.5". Bracket has slotted holes at each end.

Thanks

07-10-2015, 12:38 AM	#1
SIXT8LOU Registered User Join Date: Oct 2007 Location: Corona,Ca Posts: 146	Brake booster support brackets...help I am im the process of disk conversion for my 68 C10...i could use a little help with the installation of these brake booster brackets. A few pics would really be useful, do i need both of them? I am using a 72 set up with a brand new booster/MC/port.valve set up from Brothers. thanks Attached Images __________________ 68 C/10 short bed 77 C/20 silverado long bed 05 GMC Duramax Crew

07-10-2015, 05:45 AM	#2
dazza Registered User Join Date: Aug 2002 Location: California Posts: 971	Re: Brake booster support brackets...help Here are a few from before I pulled mine. First two are the same photo, just one highlighting where they are. Third one is a closer shot but I've highlighted where the upper end attaches. They don't show exactly where the upper one attaches to the firewall but I'm pretty sure it's right about where it is in the pics. I'm sure I have others, would just have to do a bit of searching because I have somewhere between 8-9000 photos taken when pulling things apart. Attached Images __________________ --------------------------------------------------------- I'm not crazy, I'm chosen, there's a difference. ---------------------------- '72 K10 SWB, 350, sm465/np205 ---- ----

07-10-2015, 10:03 AM	#3
SIXT8LOU Registered User Join Date: Oct 2007 Location: Corona,Ca Posts: 146	Re: Brake booster support brackets...help thanks alot, it looks like i have to use both of them,,,ive seen a few pics where only one bracket is used (the larger one) on C10s and the other one on k10s, but never both of them on the same truck. thanks again...i will continue to cruise the site for more pics... __________________ 68 C/10 short bed 77 C/20 silverado long bed 05 GMC Duramax Crew

07-10-2015, 10:10 AM	#4
dazza Registered User Join Date: Aug 2002 Location: California Posts: 971	Re: Brake booster support brackets...help mines a k10 btw. I actually grew up in Norco too! __________________ --------------------------------------------------------- I'm not crazy, I'm chosen, there's a difference. ---------------------------- '72 K10 SWB, 350, sm465/np205 ---- ----

07-10-2015, 10:15 AM	#5
SIXT8LOU Registered User Join Date: Oct 2007 Location: Corona,Ca Posts: 146	Re: Brake booster support brackets...help thats great...you know what they say....Nor..co. is north corona..lol....hahaha __________________ 68 C/10 short bed 77 C/20 silverado long bed 05 GMC Duramax Crew

07-10-2015, 11:45 AM	#6
HeavyD Senior Member Join Date: Sep 2004 Location: Wakaw, Sask, Canada Posts: 3,183	Re: Brake booster support brackets...help Is the firewall thatbflimsybto need both brackets? I get the one that supports under as the booster assembly does have some heft, but wasnt the side bracket overkill? Has anyone seen the firewall area crack or anythi g from the weight? __________________ "You can take the man out of PA, but you can't take PA out of the man"

07-10-2015, 12:09 PM	#7
BrianG Registered User Join Date: May 2011 Location: Oakley, Michigan Posts: 735	Re: Brake booster support brackets...help The one that is more tubular goes to the backside of the emergency brake bolt (69-72 style emergency brake actuator). If you have a 68 cab you won't have this bolt or the raised portion of the cab or even a hole for it, and in fact, the fuse block may or may not be in the way even if you were to try to put it there. I've seen lots of pictures of people adding the aftermarket power brake setups (usually the CPP ones) and have noticed that they don't run the brackets. I'd also be interested to know if they are really necessary.

08-21-2025, 02:49 PM	#8
Old school57 Registered User Join Date: Dec 2016 Location: Snohomish washington Posts: 76	Re: Brake booster support brackets...help I’m in need of both does anyone know where i can find them.

08-22-2025, 05:08 PM	#9
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 4,038	Re: Brake booster support brackets...help 71-72 C10 booster and support bracket. Attached Images __________________ Mike 1969 Custom/10 LWB -- owned for 37 years. 350/TH350, 3.08 posi, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. Hedman stainless headers. Old Air installation in progress. 1982 Custom Deluxe 10 SWB -- converted from 250-six to roller cam 350 w/ Vortec heads -- sold 1981 C10 Silverado LWB, 305, TH350C -- sold, but wish I still had it! 1969 C10 (not the current one) which I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 26 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!

08-23-2025, 10:32 AM	#10
ivory68 Registered User Join Date: Oct 2013 Location: San Diego, Ca Posts: 30	Re: Brake booster support brackets...help I did the ECE front disk conversion on my '68. No brackets. Until now, I didn't know there were brackets for the newer years. Attached Images

08-23-2025, 10:51 AM	#11
LNP Registered User Join Date: Mar 2014 Location: Pekin, Illinois Posts: 451	Re: Brake booster support brackets...help Does anyone know if a 69 C-10 is suppose to have one? My truck was manual brakes when I got it. I switched it to power disc using the CPP kit. If it does and someone can give me measurments for it I can make me one. Thanks __________________ Harley 1969 Chevy C-10 Long Bed, 350cid, 700R4

08-23-2025, 10:04 PM	#13
Jim Boy Registered User Join Date: Nov 2017 Location: Wasaga Beach Ontario Canada Posts: 224	Re: Brake booster support brackets...help I have been running my 68 for 21 years without the brackets. No problems what so ever. Have a good one eh.



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