will this brake setup work for me? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Adam12 · 10-05-2003, 10:50 PM

brake setup
Will this set up work for my 70 1/2 ton? I have drum brakes all around and need some help stopping while I save for one of the aftermarket disc kits. If this will work can I keep it with an aftermarket disc kit? If It wont work does anyone have a setup that they would sell me?

Tx Firefighter · 10-05-2003, 10:55 PM

Hard to tell how much difference between our trucks and the cars listed, as far as brake stuff goes.

For 125 though, you can easy find someone who will sell you a power booster for your truck. Just put a want to buy ad in the parts board. Then, you'll know it will work.

Longhorn Man · 10-05-2003, 11:12 PM

The booster won't work properly...it is for a disc/drum set up.
Whats wrong with non power set ups?

Adam12 · 10-05-2003, 11:21 PM

My truck is extremly hard to stop I have checked everything I can think of I will change all the wheel cylinders next. Today I changed the mastercylinder and that seemed to help a little. I will put an ad on the parts page. Thanks,
Adam

Tx Firefighter · 10-05-2003, 11:24 PM

Something is wrong then.

manual 4 wheel drums should stop fine.

My 69 wouldn't ever stop either. Finally figured out the front brake hoses were deteoritated inside, not allowing the front brakes to work. New hoses transformed the truck.

Adam12 · 10-05-2003, 11:27 PM

I will check those this week then, I might as well go ahead and replace them anyway. Thanks for the help, I swear I learn so much on these boards.

Adam12 · 10-05-2003, 11:38 PM

Also, My pedal does not get stiff until it is almost alll the way down I'd say about 80% down before I feel the truck start stopping, and the pedal does not hit the ground (anymore)

Longhorn Man · 10-05-2003, 11:40 PM

New shoes are cheap, and replacing the springs and adjusters is a good move too.

While your typical drum brakes are not all that great, esp the non-power veriety, they are not as bad as many people will make you think.
Just ensure all is in good working order, turn the drums when new shoes go in, and modify your driving habits a bit...and all will be good.

68LSS1 · 10-06-2003, 12:10 AM

I've got a power booster/master cyl combo. Been sitting 3 years. Bought new year prior (total 4 years old). I want to keep the booster bracket as I might need that. Going to 9" dual diaphragm, 4 wheel disc.

boraxman · 10-06-2003, 09:46 AM

I have a master cyl/booster off my '70 1/2 ton. Im doing DB conversion. PM me if interested. Will take $75 shipped.

Injected68LS1 · 10-07-2003, 11:39 PM

One thing that really help drum brakes is too get the best pads you can afford. I use the carbon metallic pads and they help considerably. Also make sure you have your entire system bled properly.

gregbr · 10-08-2003, 12:35 AM

The brakes on my 70 GMC (non power brakes, 4 wheel drums) worked OK, but you had to stand on them with both feet to stop quickly. I added the power brake booster and kept the same master cylinder, 4 drum brakes, etc. I had to lenghten the rod to the pedal an inch or so. It works great now, just touch the pedal like a new car.

10-05-2003, 10:50 PM	#1
Adam12 I hate trannys Join Date: Dec 2001 Location: Bakersfield,CA Posts: 160	will this brake setup work for me? brake setup Will this set up work for my 70 1/2 ton? I have drum brakes all around and need some help stopping while I save for one of the aftermarket disc kits. If this will work can I keep it with an aftermarket disc kit? If It wont work does anyone have a setup that they would sell me? __________________ 70 SWB 481 ci, TH-400, Edlebrok Victor Jr. intake, Holley street avenger 770, Dynomax ceramic coated headers. Dual flowmasters. and only 3516134 more little things to do.

10-05-2003, 10:55 PM	#2
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Hard to tell how much difference between our trucks and the cars listed, as far as brake stuff goes. For 125 though, you can easy find someone who will sell you a power booster for your truck. Just put a want to buy ad in the parts board. Then, you'll know it will work. __________________ I'm on the Instagram- @Gearhead_Kevin

10-05-2003, 11:21 PM	#4
Adam12 I hate trannys Join Date: Dec 2001 Location: Bakersfield,CA Posts: 160	My truck is extremly hard to stop I have checked everything I can think of I will change all the wheel cylinders next. Today I changed the mastercylinder and that seemed to help a little. I will put an ad on the parts page. Thanks, Adam __________________ 70 SWB 481 ci, TH-400, Edlebrok Victor Jr. intake, Holley street avenger 770, Dynomax ceramic coated headers. Dual flowmasters. and only 3516134 more little things to do.

10-05-2003, 11:24 PM	#5
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Something is wrong then. manual 4 wheel drums should stop fine. My 69 wouldn't ever stop either. Finally figured out the front brake hoses were deteoritated inside, not allowing the front brakes to work. New hoses transformed the truck. __________________ I'm on the Instagram- @Gearhead_Kevin

10-05-2003, 11:27 PM	#6
Adam12 I hate trannys Join Date: Dec 2001 Location: Bakersfield,CA Posts: 160	I will check those this week then, I might as well go ahead and replace them anyway. Thanks for the help, I swear I learn so much on these boards. __________________ 70 SWB 481 ci, TH-400, Edlebrok Victor Jr. intake, Holley street avenger 770, Dynomax ceramic coated headers. Dual flowmasters. and only 3516134 more little things to do.

10-05-2003, 11:12 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	The booster won't work properly...it is for a disc/drum set up. Whats wrong with non power set ups?

10-05-2003, 11:38 PM	#7
Adam12 I hate trannys Join Date: Dec 2001 Location: Bakersfield,CA Posts: 160	Also, My pedal does not get stiff until it is almost alll the way down I'd say about 80% down before I feel the truck start stopping, and the pedal does not hit the ground (anymore) __________________ 70 SWB 481 ci, TH-400, Edlebrok Victor Jr. intake, Holley street avenger 770, Dynomax ceramic coated headers. Dual flowmasters. and only 3516134 more little things to do.

10-05-2003, 11:40 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	New shoes are cheap, and replacing the springs and adjusters is a good move too. While your typical drum brakes are not all that great, esp the non-power veriety, they are not as bad as many people will make you think. Just ensure all is in good working order, turn the drums when new shoes go in, and modify your driving habits a bit...and all will be good.

10-06-2003, 12:10 AM	#9
68LSS1 Registered User Join Date: Dec 2002 Location: Tampa Posts: 1,191	I've got a power booster/master cyl combo. Been sitting 3 years. Bought new year prior (total 4 years old). I want to keep the booster bracket as I might need that. Going to 9" dual diaphragm, 4 wheel disc. __________________ '68 Short Step LS1/T56, Hydratech, Fatman Fabrications Stage III, Baer, Hot Rods to Hell, US Body, S&W, etc

10-06-2003, 09:46 AM	#10
boraxman Keepin an eye out Join Date: Feb 2003 Location: So.Cal Posts: 3,920	I have a master cyl/booster off my '70 1/2 ton. Im doing DB conversion. PM me if interested. Will take $75 shipped. __________________ 1970 Chevy C10 SWB 5.3 1996 Toyota Tacoma SR5 4x4 2007 Vespa GTS 250 Scooter ZIP 91351

10-07-2003, 11:39 PM	#11
Injected68LS1 Registered User Join Date: Jul 2003 Location: So. Cal. Posts: 389	One thing that really help drum brakes is too get the best pads you can afford. I use the carbon metallic pads and they help considerably. Also make sure you have your entire system bled properly. __________________ 1968 Chev SWB with 1998 Corvette LS1 305hp and 320 ftlb to the wheels (stock engine!) AEM EMS and wideband O2 sensors Bowtie Overdrive's 700R4, stage 3 Baer 4 wheel discs and 20s http://iciclelanding.com/aperture?album=2049&view=album

10-08-2003, 12:35 AM	#12
gregbr Senoir Member Join Date: Mar 2002 Location: Rock Hill, SC USA Posts: 1,214	The brakes on my 70 GMC (non power brakes, 4 wheel drums) worked OK, but you had to stand on them with both feet to stop quickly. I added the power brake booster and kept the same master cylinder, 4 drum brakes, etc. I had to lenghten the rod to the pedal an inch or so. It works great now, just touch the pedal like a new car. __________________ 67 Chevy, Small back glass, Factory 4WD, Factory Shortbed, Factory V8, Lifted 4" 70 GMC Sierra Grande, Factory Shortbed, Factory 402/400 turbo, Super Custom Interior. Numbers matching with SPID & Build Sheet. 68K Original Miles. Restored 2010 70 GMC Restoration Pictures http://67-72chevytrucks.com/gallery/...00&ppuser=4424

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