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

alfeefish · 01-18-2008, 06:40 AM

I have added disk brakes to my 67. How well will It stop without the booster?

Longhorn Man · 01-18-2008, 06:53 AM

it'll stop fine, you'll just need to press harder.

alfeefish · 01-18-2008, 07:00 AM

Better than drum?

ChevLoRay · 01-18-2008, 07:58 AM

It should, but there's a lot riding on the "IF's"....

The vacuum booster just increases the force applied to the master cylinder. If you are young and strong of leg, you should be able to lock the brakes and scare the crap out of everyone else on the road with you!!

68gmsee · 01-18-2008, 09:22 AM

Quote:

Originally Posted by alfeefish

Better than drum?

Supposedly, you will have to depress the pedal harder with disc brakes. You have less surface area, but the main reason is that drums brake shoes actually expand against the drum when stopping. The best explanation I've found, is in "How stuff Works." Believe it or not, they have a good example of how they operate.

I don't believe I've ever seen a front disc brake vehicle without power...

http://auto.howstuffworks.com/drum-brake1.htm

OJOE · 01-18-2008, 09:33 AM

if you seen mike nutts build he has this set up. it stops just fine , but you do have to make up for the booster with your leg.

panhandler62 · 01-18-2008, 09:36 AM

Quote:

Originally Posted by 68gmsee

I don't believe I've ever seen a front disc brake vehicle without power...

http://auto.howstuffworks.com/drum-brake1.htm

I had a 72 Camaro .. dics/drum setup. It didn't have power brakes.

68gmsee · 01-18-2008, 11:42 PM

Quote:

Originally Posted by panhandler62

I had a 72 Camaro .. dics/drum setup. It didn't have power brakes.

Re: "Never seen disk brakes without power." I guess what I should have said is "worked on" or "driven."

I've replaced a lot of brake shoes and pads on vehicles, but I've never worked on or driven a disk brake vehicle without power. So, I really have no personal knowledge of how much more pressure you would use on one versus the other...

Bus Ted Knuckle · 01-18-2008, 09:39 AM

Quote:

Originally Posted by 68gmsee

I don't believe I've ever seen a front disc brake vehicle without power...

http://auto.howstuffworks.com/drum-brake1.htm

My Dad's 72 Chev truck had manual disc brakes. Manual discs were standard equipment were they not?

PanelDeland · 01-18-2008, 07:58 AM

There's no clear answer to your question.Manual discs should work fine.So should manual drums.That is if they are in good shape.Actually drums should have more friction surface and theoretically should be better at stopping your truck but the discs radiate heat away faster and the heat is what causes brake fade.I'm in the process of converting to power discs,mostly because I want a lower stance and I do a lot of driving in heavy traffic.The reduced fade should be good for that.Serviceability is also enhanced by discs.You probably wont see much difference in pedal pressure but you will have better repetetive braking.Hope this helps you.

kenm78 · 01-18-2008, 12:47 PM

No matter what brake style you have " Brakes are only as good, as they can disapate the heat they generate"

Longhorn Man · 01-18-2008, 01:29 PM

there were millions of cars ahnd trucks made with disks and no booster.

**truckdude239** · 01-19-2008, 09:23 PM

mine has no booster and it is disc/drum and it stops fine . hell it stop better then alot of new cars i drive at work

Shyguy · 01-20-2008, 12:58 AM

My '71 C-10 came with manual disc brakes. I like the way they feel, but they do take more force to operate.

I can lock them up if I want without any problem, but I like the control manual brakes gives me.

My son put power disc brakes on his '70 C-10 short bed and he likes them but they feel a little touchy to me.

Danny-Southeast Missouri

ChevLoRay · 01-20-2008, 01:59 AM

Praise Brake Dyno (website??) has/had kevlar brake linings that they said would put a lot of other braking materials to shame. Saw an article in a magazine about them and they were quite complimentary. Drum brakes that stopped better than any 4-wheel power discs, they said.

01-18-2008, 06:40 AM	#1
alfeefish Registered User Join Date: Feb 2005 Location: Harrison TN Posts: 183	Brake booster I have added disk brakes to my 67. How well will It stop without the booster?

01-18-2008, 06:53 AM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Brake booster it'll stop fine, you'll just need to press harder.

01-18-2008, 07:00 AM	#3
alfeefish Registered User Join Date: Feb 2005 Location: Harrison TN Posts: 183	Re: Brake booster Better than drum?

01-18-2008, 07:58 AM	#4
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: Brake booster It should, but there's a lot riding on the "IF's".... The vacuum booster just increases the force applied to the master cylinder. If you are young and strong of leg, you should be able to lock the brakes and scare the crap out of everyone else on the road with you!! __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

01-18-2008, 09:33 AM	#6
OJOE Crew Cut Join Date: Dec 2005 Location: MONTGOMERY,AL Posts: 757	Re: Brake booster if you seen mike nutts build he has this set up. it stops just fine , but you do have to make up for the booster with your leg. __________________ 85 SWB 1/2 TON CREWCAB/5.3 03 CHEV 3500 DURAMAX CREW CAB 85 CHEV SWB/TPI 06 CHEV TAHOE (WIFES) 30 MODEL A HOT ROD 07 HARLEY DAVIDSON BAGGER 09 STREET GLIDE AN D A LOT MORE JUNK

01-18-2008, 07:58 AM	#10
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	Re: Brake booster There's no clear answer to your question.Manual discs should work fine.So should manual drums.That is if they are in good shape.Actually drums should have more friction surface and theoretically should be better at stopping your truck but the discs radiate heat away faster and the heat is what causes brake fade.I'm in the process of converting to power discs,mostly because I want a lower stance and I do a lot of driving in heavy traffic.The reduced fade should be good for that.Serviceability is also enhanced by discs.You probably wont see much difference in pedal pressure but you will have better repetetive braking.Hope this helps you. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

01-18-2008, 12:47 PM	#11
kenm78 Broken Down Join Date: Dec 2006 Location: Choctaw, Oklahoma Posts: 1,267	Re: Brake booster No matter what brake style you have " Brakes are only as good, as they can disapate the heat they generate" __________________ kenm78 1982 Chevy 4X4 Project truck “It’s better to keep your mouth shut and let people wonder about your ignorance, than open your mouth and reveal all doubt” Last edited by kenm78; 01-18-2008 at 12:48 PM.

01-18-2008, 01:29 PM	#12
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Brake booster there were millions of cars ahnd trucks made with disks and no booster.

01-19-2008, 09:23 PM	#13
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: Brake booster mine has no booster and it is disc/drum and it stops fine . hell it stop better then alot of new cars i drive at work __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

01-20-2008, 12:58 AM	#14
Shyguy Junior Member Join Date: Dec 2006 Location: Southeast Missouri Posts: 2,436	Re: Brake booster My '71 C-10 came with manual disc brakes. I like the way they feel, but they do take more force to operate. I can lock them up if I want without any problem, but I like the control manual brakes gives me. My son put power disc brakes on his '70 C-10 short bed and he likes them but they feel a little touchy to me. Danny-Southeast Missouri

01-20-2008, 01:59 AM	#15
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: Brake booster Praise Brake Dyno (website??) has/had kevlar brake linings that they said would put a lot of other braking materials to shame. Saw an article in a magazine about them and they were quite complimentary. Drum brakes that stopped better than any 4-wheel power discs, they said. __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.



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