Looking for ideas on brakes/boosters/masters - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bbcmudtruck · 12-22-2014, 12:22 PM

I want to shave my firewall this winter and I'm looking for ideas on what you guys did with the big old bulky brake booster and master cylinder. I have a 73+ complete brake system. The prop valve is located down on the front cross member, just like it would be on the square body trucks. What I would like to see are ideas and solutions to having a cleaner firewall. IE smaller boosters, relocated boosters/masters etc. I would also like to get some ideas on how to plumb the brakes in order to keep as much is hidden as possible. Thanks!

no1udknow · 12-22-2014, 12:30 PM

I used a 85 booster and master cyl, it sits pretty high, might clear fenders. At first I was worried it wouldn't clear the hood. The other option is a hydro boost, I have seen lots of guys do that, and then tuck the booster under the truck up in the frame.

dirtyjim · 12-22-2014, 08:16 PM

I'm running a late model astro van booster flush mounted, I would guess its around 9" and a mid 80's aluminum c10 master cylinder. right now my brake lines are stock from a 85 c10 and my prop valve is mounted on the front frame crossmember. when I replace my body mounts I'm going to pull the front clip and run new ss brake lines, they will come straight back from the master cyl. then down the firewall and run inside the frame to the prop valve. I think that would be about as clean as you could get them without running a under floor street rod style master cyl mount.

*Fitz* · 12-22-2014, 08:26 PM

Quote:

Originally Posted by bbcmudtruck

I want to shave my firewall this winter and I'm looking for ideas on what you guys did with the big old bulky brake booster and master cylinder. I have a 73+ complete brake system. The prop valve is located down on the front cross member, just like it would be on the square body trucks. What I would like to see are ideas and solutions to having a cleaner firewall. IE smaller boosters, relocated boosters/masters etc. I would also like to get some ideas on how to plumb the brakes in order to keep as much is hidden as possible. Thanks!

Short of going to a booster and master that mounts under the floor, your only alternative is a dual diaphragm booster in the stock location. 7 in in diameter.

bs46488 · 12-22-2014, 08:32 PM

Hydro boost.

mooseknuckles · 12-22-2014, 10:12 PM

wildwood master cylinder, manual brakes...

bbcmudtruck · 12-22-2014, 11:30 PM

Quote:

Originally Posted by mooseknuckles

wildwood master cylinder, manual brakes...

What exactly would that consist of? Thanks!

SierraMtns · 12-23-2014, 12:13 AM

Quote:

Originally Posted by bbcmudtruck

What exactly would that consist of? Thanks!

It would be this. Nice clean set up.

http://67-72chevytrucks.com/vboard/s...d.php?t=650420

12-23-2014, 12:56 AM

Quote:

Originally Posted by bbcmudtruck

What exactly would that consist of? Thanks!

lol. it would consist or crappy braking. yes im aware of how to change pedal leverage but your gonna loose pedal travel in the process. hydroboost and fab it under the floor. I use hydroboost on all my junk

bbcmudtruck · 12-23-2014, 09:35 AM

Thanks for the info hahah. That was going to be my next question. What does everyone use for hydro boost? Any part sources or pictures of installation?

bs46488 · 12-23-2014, 01:56 PM

I use hydroboost because of a low vacuum issue. I didn't want to mount a spare tank to keep the vacuum up.

A hydrobooster is also much smaller than your standard 11" power booster, so you get a lot more wiggle room in the engine bay.

I fab my systems with factory boosters/masters, but a great bolt on solution is here:

http://www.hydratechbraking.com/

bbcmudtruck · 12-24-2014, 11:02 AM

Thank you!

12-24-2014, 09:14 PM

Oh if you go Hydro dont forget a face mask. Your first stop may net you a broken nose

SaltyC20 · 12-24-2014, 10:47 PM

Have you considered CaptainFab's booster bracket? It tucks the booster closer to the firewall and allows the use of universal boosters.

http://www.67-72chevytrucks.com/vboa...d.php?t=347484

bbcmudtruck · 12-25-2014, 12:11 PM

No sure haven't. Does he have a website or somewhere I can see this setup installed?

12-25-2014, 08:42 PM

I took a 1/4 inch plate and fabbed my own hydro to firewall plate. Depending on years they used hydro boost on the factory 71 up one ton up chassis. I held one in my hands one time. It had inverted flare fittings. You can make your own hyd lines at home from stainless braided hyd line and hyd stainless an fittings. So you can do any style ends you want. I used a hydro from a dmax on my 72 blazer, umm wait I first used one front the 80s on my 454 solid roller motor that had no vac then dmax . Making the tang in the plate req me to finalize the hole with a half round file

12-22-2014, 12:22 PM	#1
bbcmudtruck Registered User Join Date: Nov 2012 Location: ravenwood, mo Posts: 709	Looking for ideas on brakes/boosters/masters I want to shave my firewall this winter and I'm looking for ideas on what you guys did with the big old bulky brake booster and master cylinder. I have a 73+ complete brake system. The prop valve is located down on the front cross member, just like it would be on the square body trucks. What I would like to see are ideas and solutions to having a cleaner firewall. IE smaller boosters, relocated boosters/masters etc. I would also like to get some ideas on how to plumb the brakes in order to keep as much is hidden as possible. Thanks!

12-22-2014, 12:30 PM	#2
no1udknow Registered User Join Date: Jan 2014 Location: Sacramento,California Posts: 696	Re: Looking for ideas on brakes/boosters/masters I used a 85 booster and master cyl, it sits pretty high, might clear fenders. At first I was worried it wouldn't clear the hood. The other option is a hydro boost, I have seen lots of guys do that, and then tuck the booster under the truck up in the frame. __________________ Built not bought! My dad always tried to convince me HEI was pointless! Welding is a lot like sex, you don't have to be great with the rod as long as you thoroughly prep the surface and your good at grinding My build : 68 C10 Short Bed Conversion

12-22-2014, 08:16 PM	#3
dirtyjim Registered User Join Date: Feb 2013 Location: alvin, texas Posts: 622	Re: Looking for ideas on brakes/boosters/masters I'm running a late model astro van booster flush mounted, I would guess its around 9" and a mid 80's aluminum c10 master cylinder. right now my brake lines are stock from a 85 c10 and my prop valve is mounted on the front frame crossmember. when I replace my body mounts I'm going to pull the front clip and run new ss brake lines, they will come straight back from the master cyl. then down the firewall and run inside the frame to the prop valve. I think that would be about as clean as you could get them without running a under floor street rod style master cyl mount. __________________ 1967 C10 lwb two tone, 305 & rat fink style floor shifted 700r4, 20" steelies 2004 2500HD utility bed aka Brutus

12-22-2014, 08:32 PM	#5
bs46488 Registered User Join Date: May 2014 Location: San Diego, CA Posts: 547	Re: Looking for ideas on brakes/boosters/masters Hydro boost.

12-22-2014, 10:12 PM	#6
mooseknuckles Registered User Join Date: Sep 2009 Location: ottawa,canada Posts: 4,550	Re: Looking for ideas on brakes/boosters/masters wildwood master cylinder, manual brakes... __________________ my build threads '86 C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415628 '67 C10 http://67-72chevytrucks.com/vboard/s...d.php?t=635078 '63 GMC http://67-72chevytrucks.com/vboard/s...d.php?t=674682

12-23-2014, 09:35 AM	#10
bbcmudtruck Registered User Join Date: Nov 2012 Location: ravenwood, mo Posts: 709	Re: Looking for ideas on brakes/boosters/masters Thanks for the info hahah. That was going to be my next question. What does everyone use for hydro boost? Any part sources or pictures of installation?

12-23-2014, 01:56 PM	#11
bs46488 Registered User Join Date: May 2014 Location: San Diego, CA Posts: 547	Re: Looking for ideas on brakes/boosters/masters I use hydroboost because of a low vacuum issue. I didn't want to mount a spare tank to keep the vacuum up. A hydrobooster is also much smaller than your standard 11" power booster, so you get a lot more wiggle room in the engine bay. I fab my systems with factory boosters/masters, but a great bolt on solution is here: http://www.hydratechbraking.com/

12-24-2014, 11:02 AM	#12
bbcmudtruck Registered User Join Date: Nov 2012 Location: ravenwood, mo Posts: 709	Re: Looking for ideas on brakes/boosters/masters Thank you!

12-24-2014, 09:14 PM	#13
Madspeed Guest Posts: n/a	Re: Looking for ideas on brakes/boosters/masters Oh if you go Hydro dont forget a face mask. Your first stop may net you a broken nose

12-24-2014, 10:47 PM	#14
SaltyC20 Registered User Join Date: Nov 2014 Location: Chandler, Arizona Posts: 47	Re: Looking for ideas on brakes/boosters/masters Have you considered CaptainFab's booster bracket? It tucks the booster closer to the firewall and allows the use of universal boosters. http://www.67-72chevytrucks.com/vboa...d.php?t=347484 __________________ 1968 Chevy C20

12-25-2014, 12:11 PM	#15
bbcmudtruck Registered User Join Date: Nov 2012 Location: ravenwood, mo Posts: 709	Re: Looking for ideas on brakes/boosters/masters No sure haven't. Does he have a website or somewhere I can see this setup installed?

12-25-2014, 08:42 PM	#16
Madspeed Guest Posts: n/a	Re: Looking for ideas on brakes/boosters/masters I took a 1/4 inch plate and fabbed my own hydro to firewall plate. Depending on years they used hydro boost on the factory 71 up one ton up chassis. I held one in my hands one time. It had inverted flare fittings. You can make your own hyd lines at home from stainless braided hyd line and hyd stainless an fittings. So you can do any style ends you want. I used a hydro from a dmax on my 72 blazer, umm wait I first used one front the 80s on my 454 solid roller motor that had no vac then dmax . Making the tang in the plate req me to finalize the hole with a half round file



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