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#1 |
Registered User
Join Date: Jan 2011
Location: Wisconsin
Posts: 224
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I need ya help, Brake Booster Size?
Alright ya'll I can't deside to go with the factory size 11" brake booster or go with a Dual 8" brake booster. I'm gonna have tall valve covers on my 400 small block. So I want as much room as I can get. If anyone has pics of the clearance between the booster and the valve cover of either stock or custom that would be great. Thanks ya'll
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Always remember those that had your back Never forget those that turned it Demon 68- C20 (conv. 5 lug) 406sb, TH400, 12 Bolt, Red Slut 09- 1500 Crew Cab Z71, 2.5" Lift, Comp Cam, Deleted AFM/DoD, Diablo tuner |
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#2 |
Registered User
Join Date: Jan 2011
Location: Redmond, OR
Posts: 758
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Re: I need ya help, Brake Booster Size?
Here is my 400SB (the above one looks like a BB). The truck was originally manual brakes, but the booster set-up I put on was from a factory truck (69 I think).
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68 Chev C20- son has it now 83 K20 - bought from son 70 C20 - in progress |
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#3 |
Registered User
Join Date: Nov 2008
Location: Italy
Posts: 1,278
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Re: I need ya help, Brake Booster Size?
Have you seen the look of a 8" booster? I installed one and it looked all wrong. The extra length just looked weird. I promptly sold it and bought an 11". Looks way better.
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'68 C-10 SWB 383 Stroker (Sold 3/2/2013) '87 R2500 LWB 454 TBI converted to Carb ![]() |
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#4 |
Registered User
Join Date: Jan 2011
Location: Wisconsin
Posts: 224
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Re: I need ya help, Brake Booster Size?
Thanks for the pics and the input ya'll. Its great to be able to get to talk to other people with my same interests as me. Does anyone have a pic of the 8in booster?
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Always remember those that had your back Never forget those that turned it Demon 68- C20 (conv. 5 lug) 406sb, TH400, 12 Bolt, Red Slut 09- 1500 Crew Cab Z71, 2.5" Lift, Comp Cam, Deleted AFM/DoD, Diablo tuner |
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#5 |
Senior Member
Join Date: Jul 2010
Location: South Dakota
Posts: 4,093
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Re: I need ya help, Brake Booster Size?
interested
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1969 Chevy c20(Miss Hackjob) |
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#6 |
Registered User
Join Date: Nov 2008
Location: Italy
Posts: 1,278
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Re: I need ya help, Brake Booster Size?
I found a photo of the 8" booster I installed. In looking at it, I think the firewall bracket pushed it to far forward and the master cylinder seemed too big. The front of the master cylinder was literally in line with the front of the valve cover.
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'68 C-10 SWB 383 Stroker (Sold 3/2/2013) '87 R2500 LWB 454 TBI converted to Carb ![]() |
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#7 |
Redefining LowBudget
Join Date: Mar 2009
Location: lebanon Cow Hampshire
Posts: 4,538
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Re: I need ya help, Brake Booster Size?
look at your frame and see which hole the frame engine mounts are in....my 500 caddy is in the front holes and I could still pull the vavle covers and heads without moving the booster
check build for pic
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1970 C10 CST fleetside 472 ....big dreams little cash... SunShine Syndicate.. ![]() Mikes Sandwich Fair Run OCT 8th 2011
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#8 | |
Account Suspended
Join Date: Jan 2007
Location: Tucson
Posts: 2,183
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Re: I need ya help, Brake Booster Size?
Quote:
My big block is a 10.4 in (tall deck) motor so the valve covers sit a bit higher, so i use a dual diaphragm 8 inch. |
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#9 |
sharp as a marble
![]() Join Date: Jan 2007
Location: atlantic beach,florida
Posts: 1,082
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Re: I need ya help, Brake Booster Size?
I personally do not like 8" boosters. I installed one on my Blazer, and it took less than 24 hours to remove it. There is just not enough volume in them to make the pedal feel proper. I now have a 9" booster on it, and would think it would give you plenty of room to do what ever. The 11" are the best for a stock appearing setup, but I am very happy with the way my brakes feel.
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#10 |
Registered User
Join Date: Aug 2009
Location: Alden NY
Posts: 2,705
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Re: I need ya help, Brake Booster Size?
There are two different length brackets that were used on these trucks. The shorter one was used for the double diaphragm booster and the longer one for the larger diameter single (if I am not mistaken) Double D's were used on 4X4's and the 20 and 30 series I am fairly sure. Tee It Up or Too Much stuff who do a lot of parting out will be gospel on this.
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1961 C1 Corvette 1959 El Camino 350 TPI, 9" 4 w disc 69 Blazer K5 - sold July '20 2021 Durango RT 5.7 |
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#11 | |
Registered User
Join Date: Jan 2011
Location: Wisconsin
Posts: 224
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Re: I need ya help, Brake Booster Size?
Quote:
__________________
Always remember those that had your back Never forget those that turned it Demon 68- C20 (conv. 5 lug) 406sb, TH400, 12 Bolt, Red Slut 09- 1500 Crew Cab Z71, 2.5" Lift, Comp Cam, Deleted AFM/DoD, Diablo tuner |
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#12 |
Registered User
Join Date: Jan 2011
Location: Wisconsin
Posts: 224
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Re: I need ya help, Brake Booster Size?
I'm also comtemplating using the angled bracket to get the booster away from the valve cover. But I don't know what that would look like. I'm not too worried about it looking factory. The motor, trans, and rearend aren't factory anymore.
__________________
Always remember those that had your back Never forget those that turned it Demon 68- C20 (conv. 5 lug) 406sb, TH400, 12 Bolt, Red Slut 09- 1500 Crew Cab Z71, 2.5" Lift, Comp Cam, Deleted AFM/DoD, Diablo tuner |
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#13 | |
Registered User
Join Date: Jan 2011
Location: Wisconsin
Posts: 224
|
Re: I need ya help, Brake Booster Size?
Quote:
__________________
Always remember those that had your back Never forget those that turned it Demon 68- C20 (conv. 5 lug) 406sb, TH400, 12 Bolt, Red Slut 09- 1500 Crew Cab Z71, 2.5" Lift, Comp Cam, Deleted AFM/DoD, Diablo tuner |
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#14 |
Registered User
Join Date: Jan 2011
Location: Wisconsin
Posts: 224
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Re: I need ya help, Brake Booster Size?
Bump
__________________
Always remember those that had your back Never forget those that turned it Demon 68- C20 (conv. 5 lug) 406sb, TH400, 12 Bolt, Red Slut 09- 1500 Crew Cab Z71, 2.5" Lift, Comp Cam, Deleted AFM/DoD, Diablo tuner |
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#15 |
sharp as a marble
![]() Join Date: Jan 2007
Location: atlantic beach,florida
Posts: 1,082
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Re: I need ya help, Brake Booster Size?
With the 8" the pedal was too hard to push. I will post a couple of pictures here to show you my dual diaphragm 9" booster master. I have short valve covers, and have boat loads of room.
The Blazer picture ( yellow) is before the booster change. The other is my truck, and is a 9" ' Last edited by cparman; 03-09-2011 at 08:13 PM. |
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#16 |
Registered User
Join Date: Jul 2009
Location: Russellville, Arkansas
Posts: 1,699
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Re: I need ya help, Brake Booster Size?
Go Hydraboost, you'll have lots of room.
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#17 |
Registered User
![]() Join Date: Feb 2011
Location: Oklahoma
Posts: 744
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Re: I need ya help, Brake Booster Size?
Sorry to crash your thread, but I just bought a brake booster and there's no hardware that came with it. Any one know the size and type? Is it studs? Is there a back bracket to stablize the weight? We have a great hardware company here in Tulsa. As long as I know what it is they have it.
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http://67-72chevytrucks.com/vboard/s...ban+Retro:fro: |
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#18 | |
Registered User
![]() Join Date: Feb 2011
Location: Oklahoma
Posts: 744
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Re: I need ya help, Brake Booster Size?
Quote:
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http://67-72chevytrucks.com/vboard/s...ban+Retro:fro: |
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