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05-27-2013, 11:05 AM | #1 |
Senior Member
Join Date: Mar 2006
Location: Clarkrange Tennessee
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1/2 ton or 3/4 ton brake cylinder booster
I am converting my 67 to disc brakes and also upgrading the rear to disc brakes too. My question is should I use a 1/2 ton or 3/4 ton brake booster?
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05-30-2013, 09:09 PM | #2 |
67-72 parts collector,…
Join Date: Nov 2002
Location: Mid-MO
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Re: 1/2 ton or 3/4 ton brake cylinder booster
I would just use a 71-72 1/2-ton booster, master cylinder and prop valve.
I'm not sure there is much difference. Many people use aftermarket boosters.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
05-31-2013, 02:20 AM | #3 |
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Location: Louisville,Ky
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Re: 1/2 ton or 3/4 ton brake cylinder booster
Just make sure its for disc front and rear you should be fine.
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05-31-2013, 08:22 AM | #4 |
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Re: 1/2 ton or 3/4 ton brake cylinder booster
Plus, these can be bought from local parts stores for around $150 as opposed to $299-399 for CPP or other aftermarket brands.
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05-31-2013, 10:50 AM | #5 |
68 C 10
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Re: 1/2 ton or 3/4 ton brake cylinder booster
Do you even really need the booster if your going for a clean firewall look. How do they perform without one?
thanks. Kevin
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Kevin "Life is Hard But its Harder when your Stupid" John Wayne 68 C10 70 C20 http://67-72chevytrucks.com/vboard/s....php?t=602326# |
05-31-2013, 11:49 AM | #6 | |
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Re: 1/2 ton or 3/4 ton brake cylinder booster
Quote:
You may need to purchase a rear disc specific prop valve from an aftermarket source. Some disc brake kits have you disassemble and modifiy the stock prop valve. Some people don't run a stock prop valve. They run an adjustable prop valve installed in the rear disc brake line.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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05-31-2013, 11:51 AM | #7 | |
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Re: 1/2 ton or 3/4 ton brake cylinder booster
Quote:
It's just something you have to get use to,...
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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06-07-2013, 03:53 PM | #8 | |
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Re: 1/2 ton or 3/4 ton brake cylinder booster
Quote:
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06-07-2013, 07:05 PM | #9 | |
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Re: 1/2 ton or 3/4 ton brake cylinder booster
Quote:
Look here at the picture: http://www.classicperform.com/Instru...structions.pdf Notes: This modification will disable the proportioning valve on a disc drum combination valve and convert it to a disc disc type combination valve. Instructions: 1. Remove the hex shaped proportioning valve assembly from the rear of the combination valve. See the illustration to identify the different parts of the combination valve. 2. Using a thin set of pliers, carefully reach inside the combination valve and remove the small rubber piston from the isolation valve. This will disable the proportioning valve. 3. Reinstall the hex shaped proportioning valve assembly into the combination valve. 4. Double check that the proportioning valve has been tightened correctly, and that there are no leaks.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 06-07-2013 at 07:17 PM. |
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06-07-2013, 07:15 PM | #10 |
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Re: 1/2 ton or 3/4 ton brake cylinder booster
X2 on what lolife said.
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06-08-2013, 09:21 AM | #11 | ||
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Join Date: May 2004
Location: Columbus OH
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Re: 1/2 ton or 3/4 ton brake cylinder booster
Quote:
"Power brakes" came along because of discs. While they are better in several ways, peddle effort vs. stopping power is not one of them, you need the booster. There are "remote booster" kits available for many applications. This puts the booster behind the dash or under the floor, but leaves the master cylinder alone. There is also a set-up that puts the booster and master cylinder together behind the dash. It is an angled bracket that mounts them parallel to the firewall, in the cab. This eliminates the whole thing from the engine compartment.
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06-08-2013, 12:22 PM | #12 | |
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Re: 1/2 ton or 3/4 ton brake cylinder booster
Quote:
I have used manual (no power booster) 4 wheel disc brakes for the last 13 years, on two differant C10s. First with a corvette master and now with a chrysler master. With the correct Master Cylinder bore and the right pedal ratio the effort required to stop is not much more than power brakes. Mine is even less than the factory manual disc/drum brakes that came on these trucks. I tow a double axle car trailer with a 3200 pound car on it and have no problem stopping it. And right now the trailer brakes are not working. Most all race cars in most forms of racing these days have 4 wheel disc and don't use a brake booster.
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06-08-2013, 08:43 PM | #13 | |
just can't cover up my redneck
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Location: Columbus OH
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Re: 1/2 ton or 3/4 ton brake cylinder booster
That is a completely unfair analogy. Those racecars are sporting huge diameter rotors and have very aggressive pad compounds. These are not only prohibitively expensive but the would be eaten up in daily street driving.
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You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. |
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06-08-2013, 09:28 PM | #14 |
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Re: 1/2 ton or 3/4 ton brake cylinder booster
I'm with Longhair on this. Disc brakes need power assist.
I own two Corvettes. One with power assist, one without. There's a big difference in braking power.
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06-12-2013, 01:16 AM | #15 | |
Still plays with trucks
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Location: Spokane, WA
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Re: 1/2 ton or 3/4 ton brake cylinder booster
Quote:
http://www.summitracing.com/parts/wi...1179/overview/
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
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06-12-2013, 01:21 AM | #16 | |
Still plays with trucks
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Location: Spokane, WA
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Re: 1/2 ton or 3/4 ton brake cylinder booster
Quote:
Power brakes are a must with a heavy truck. Another option is a 1-ton truck hydra-boost conversion rather than a vacuum booster setup.
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miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
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06-12-2013, 02:27 AM | #17 |
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Join Date: Mar 2006
Location: Clarkrange Tennessee
Posts: 1,787
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Re: 1/2 ton or 3/4 ton brake cylinder booster
All I really wanted to know if I should use a 1/2 ton or 3/4 ton booster on my 67 C10? LOL
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