brake booster recommendations - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Snake72 · 01-23-2018, 10:32 AM

So I've been shopping for brake booster w/ master cylinder and prop valve combos and i'm seeing a lot of mixed reviews of the CPP and POL units. Leaking, poor fit, wrong rod, etc. Read a few good things about Tuff Stuff. Anybody have recommendation on direct replacement???

Truck is a 72 with factory power disc/drum. Old unit was leaking and I have literally replaced every single brake component on the entire truck, booster is my last piece.

Also, whats the difference between delco and bendix boosters? Do I get single or dual diaphram? stock 11" booster? I dont really want to drop 500 on a wilwood unit but they sure get great reviews

**Ironangel** · 01-23-2018, 11:29 AM

Howdy Snake, when one of my 72's blew a diaphragm I took unit to an Oreilly's. The difference between a Delco and Bendix unit is in the stamped design of the case. Cant go wrong if you just match the design and diameter of the existing unit. I dont remember which one because it's been years, but i do remember the replacement unit will look exactly like the one that's blown. Pretty sure there's a core charge involved.

Bigdav160 · 01-23-2018, 01:20 PM

Dual diaphragm is more powerful than single and used on 3/4 ton trucks. Some people choose to use them on their 1/2 tons but they are physically larger and possibly uglier to some eyes.

Andy4639 · 01-23-2018, 01:39 PM

x3 go to O-Reilly's with old booster and have them match it up. Dual diaphragm is best.
This is for a 71 but should be the same thing.

https://www.oreillyauto.com/shop/bra...rake%20booster

Snake72 · 01-23-2018, 03:49 PM

thanks guys!

demian5 · 01-23-2018, 05:23 PM

Get the biggest booster you can. I bought the 9" for my impala from CPP with the combo valve and master cylinder and am disappointed with the braking assist during the second application of the brakes. the first is fine, but an immediate again requires more pedal effort. AND when I first got it, the check valve was bad.

elkniks · 01-23-2018, 08:55 PM

You also need to consider if you want the goldish factory style finish or if black is good. I am pretty sure I bought the Tough Stuff unit and it works fine. I am only running about 10.5 inches of vacuum and the pedal is a little stiff but not that noticeable.

redbaron · 01-23-2018, 11:27 PM

Here is a link to a thread I posted a couple years ago on our K10 project. http://67-72chevytrucks.com/vboard/s...d.php?t=661200

Snake72 · 01-24-2018, 10:20 AM

Thanks for the info guys, are the original bendix or delco units dual diaphram? Or was that 3/4 ton trucks? The way I understand it, delco are gold cad which I prefer, bendix are black, is this right? I know they have different patterns on the booster and I have my original in storage currently, so I'll have to look at it.

Leaning towards a tuff stuff or right stuff 11" delco style, are they a direct swap with bendix units if thats what I originally had?

I have not had the truck running yet since getting the motor built, mild 383 but the cam has 108 LSA so I hope it produces enough vacuum. Or I'll need to hit the squat rack and leg press a little more...

Z10 · 02-20-2018, 09:11 PM

Here's my set up with a Tuffstuff and Willwood.

68 P.O.S. · 02-23-2018, 11:46 AM

I bought one of these a couple years ago http://67-72chevytrucks.com/vboard/s...d.php?t=720837

01-23-2018, 10:32 AM	#1
Snake72 Registered User Join Date: Jan 2017 Location: Iowa Posts: 239	brake booster recommendations So I've been shopping for brake booster w/ master cylinder and prop valve combos and i'm seeing a lot of mixed reviews of the CPP and POL units. Leaking, poor fit, wrong rod, etc. Read a few good things about Tuff Stuff. Anybody have recommendation on direct replacement??? Truck is a 72 with factory power disc/drum. Old unit was leaking and I have literally replaced every single brake component on the entire truck, booster is my last piece. Also, whats the difference between delco and bendix boosters? Do I get single or dual diaphram? stock 11" booster? I dont really want to drop 500 on a wilwood unit but they sure get great reviews

01-23-2018, 11:29 AM	#2
Ironangel Senior Member Join Date: Feb 2010 Location: Falls City, Nebraska "100 Miles From Nowhere" Posts: 2,219	Re: brake booster recommendations Howdy Snake, when one of my 72's blew a diaphragm I took unit to an Oreilly's. The difference between a Delco and Bendix unit is in the stamped design of the case. Cant go wrong if you just match the design and diameter of the existing unit. I dont remember which one because it's been years, but i do remember the replacement unit will look exactly like the one that's blown. Pretty sure there's a core charge involved. __________________ Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American"

01-23-2018, 01:20 PM	#3
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: brake booster recommendations Dual diaphragm is more powerful than single and used on 3/4 ton trucks. Some people choose to use them on their 1/2 tons but they are physically larger and possibly uglier to some eyes. __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe

01-23-2018, 01:39 PM	#4
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: brake booster recommendations x3 go to O-Reilly's with old booster and have them match it up. Dual diaphragm is best. This is for a 71 but should be the same thing. https://www.oreillyauto.com/shop/bra...rake%20booster __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

01-23-2018, 03:49 PM	#5
Snake72 Registered User Join Date: Jan 2017 Location: Iowa Posts: 239	Re: brake booster recommendations thanks guys!

01-23-2018, 05:23 PM	#6
demian5 Registered User Join Date: Aug 2016 Location: Lake Forest, CA Posts: 2,177	Re: brake booster recommendations Get the biggest booster you can. I bought the 9" for my impala from CPP with the combo valve and master cylinder and am disappointed with the braking assist during the second application of the brakes. the first is fine, but an immediate again requires more pedal effort. AND when I first got it, the check valve was bad. __________________ "Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC

01-23-2018, 08:55 PM	#7
elkniks Registered User Join Date: Mar 2015 Location: Seaside,CA Posts: 142	Re: brake booster recommendations You also need to consider if you want the goldish factory style finish or if black is good. I am pretty sure I bought the Tough Stuff unit and it works fine. I am only running about 10.5 inches of vacuum and the pedal is a little stiff but not that noticeable. Last edited by elkniks; 01-23-2018 at 08:58 PM. Reason: additional info

01-23-2018, 11:27 PM	#8
redbaron Registered User Join Date: Mar 2008 Location: Kimberly, Id Posts: 390	Re: brake booster recommendations Here is a link to a thread I posted a couple years ago on our K10 project. http://67-72chevytrucks.com/vboard/s...d.php?t=661200 __________________ Mike 1972 C10 Cheyenne SWB Black Supercharged Project 1972 K10 Cheyenne SWB Copper and White http://67-72chevytrucks.com/vboard/s...d.php?t=654175 1969 Camaro Protouring LS7 T-56 Project

01-24-2018, 10:20 AM	#9
Snake72 Registered User Join Date: Jan 2017 Location: Iowa Posts: 239	Re: brake booster recommendations Thanks for the info guys, are the original bendix or delco units dual diaphram? Or was that 3/4 ton trucks? The way I understand it, delco are gold cad which I prefer, bendix are black, is this right? I know they have different patterns on the booster and I have my original in storage currently, so I'll have to look at it. Leaning towards a tuff stuff or right stuff 11" delco style, are they a direct swap with bendix units if thats what I originally had? I have not had the truck running yet since getting the motor built, mild 383 but the cam has 108 LSA so I hope it produces enough vacuum. Or I'll need to hit the squat rack and leg press a little more...

02-20-2018, 09:11 PM	#10
Z10 Registered User Join Date: Aug 2012 Location: Midland, TX Posts: 1,267	Re: brake booster recommendations Here's my set up with a Tuffstuff and Willwood. Attached Images __________________ 1969 RS/SS Z10 Camaro Pace coupe 1972 GMC Short Step buildhttp://67-72chevytrucks.com/vboard/s...=1#post6356218 1979 Mazda RX7 1979 Pontiac Trans Am WS6 & 1979 Pontiac Trans Am 10th Anniversary 1999 Honda Valkyrie 2006 Corvette Z06 2010 BMW 650i

02-23-2018, 11:46 AM	#11
68 P.O.S. Registered User Join Date: Jan 2007 Location: Puyallup, WA Posts: 1,661	Re: brake booster recommendations I bought one of these a couple years ago http://67-72chevytrucks.com/vboard/s...d.php?t=720837 __________________ 72 C10 lwb fleetside -stock 350/350 combo



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