The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-07-2015, 09:32 PM   #1
LPoole
Registered User
 
LPoole's Avatar
 
Join Date: Feb 2015
Location: Morganton, NC
Posts: 108
old brakes, need upgrade

I have a 68 c10 with old brake set up. drum/drum, no booster. im wanting to upgrade the brakes... disc/drum w/booster. my question is this... what do I look for in a MC/booster set up for drum/drum brakes ? I see a lot of setups with proportioning valves for disc/drum or disc/disc set ups. do I use one of these set ups and not use the proportioning valve ? I just don't have the cash for the front disc conversion right now and was wondering if I could go ahead and get the MC/booster put on to help with braking until I do have the money for the full conversion. thx ahead of time for any info.
LPoole is offline   Reply With Quote
Old 04-07-2015, 11:02 PM   #2
SS Tim
Registered User
 
SS Tim's Avatar
 
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,504
Re: old brakes, need upgrade

First thing you can do is simply rebuild your brakes. Bring things up to factory spec with good shoes that match the arc of the drums.

Add a power booster to your existing M/C if it is in good condition. This was offered as a dealer installed option.

If you want disc brakes you can backfit factory parts.
http://67-72chevytrucks.com/vboard/s...68&postcount=4

If you do install front disc I suggest using the 71up steering linkage as well and not adapt the lighter parts.
SS Tim is offline   Reply With Quote
Old 04-07-2015, 11:38 PM   #3
LockDoc
The Older Generation


 
LockDoc's Avatar
 
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,334
Re: old brakes, need upgrade

-
The drum/drum power brakes used a distribution valve instead of a proportioning valve. I added a booster to my existing '67 drum brake setup and didn't even have to disconnect my brake lines. Make sure you get the rods with the booster They may be different.

LockDoc
__________________
Leon

Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles

(My Dually Pickup Project Thread)

http://67-72chevytrucks.com/vboard/s...d.php?t=829820

-
LockDoc is offline   Reply With Quote
Old 04-09-2015, 07:06 PM   #4
LPoole
Registered User
 
LPoole's Avatar
 
Join Date: Feb 2015
Location: Morganton, NC
Posts: 108
Re: old brakes, need upgrade

thx a lot for the good info fellas. ill put it to good use.
LPoole is offline   Reply With Quote
Old 04-09-2015, 07:19 PM   #5
michael bustamante
Senior Member
 
michael bustamante's Avatar
 
Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,818
Re: old brakes, need upgrade

i put a booster from a 72 on my old 67 and ran drums for years. all you have to do is add the booster and put the longer rod to the brake pedal.
__________________
1967custom
michael bustamante is offline   Reply With Quote
Old 04-09-2015, 08:23 PM   #6
EARNHARDT#3
Registered User
 
EARNHARDT#3's Avatar
 
Join Date: May 2014
Location: PA
Posts: 1,417
Re: old brakes, need upgrade

Depending on the condition of your brake lines they may break when you install the booster. They have to be rebent because the booster and bracket make the master cylinder move about 10" further from the firewall.
__________________
1967 C10, LWB, 250, Powerglide, PS, PB, 3/4 STATIC DROP
EARNHARDT#3 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:51 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com