'67 "brakes" issue - Camaro Zone - Camaro Forums and News

Go Back   Camaro Zone - Camaro Forums and News > Camaro & Firebird Tech Forums > 1st Gen & 2nd Gen (1967-81) Tech

LinkBack Thread Tools
Old 09-22-2013, 10:57 PM   #1
New Member
Feedback Score: 0 reviews
Join Date: Sep 2013
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
'67 "brakes" issue

Hello 1st generation enthusiasts,

I'm restoring a '67 Camaro RS. According to the firewall tag, the car came with the optional front disk brakes (first time available in '67, unless the Camaro was a SS (which the front disk brakes were part of the SS package).

The power booster and master brake cylinder are long gone (removed many years ago) and I'm having trouble deciding on the correct master cylinder assembly - with or with out the front brakes "valve" (regulator) that mounts under the mbc.

My GM build manual on page J50 - A2 shows an 11" booster with a dual ported master brake cylinder with two lines going to a pressure switch assembly under the mbc (that turns on a dash idiot light ), and from there the lines go out to the respective brakes at each wheel (one each to the front cylinders, and one to the rear that splits at a "t" at the differential. I could not find drum / drum brakes any where on the page that shows this set up. 1) Is page J50-A2 for the drum brakes at each wheel (no disk fronts)?

On page C60 - A9 of the GM build manual, it shows a valve assembly on the driver's side frame rail which is in the brake line going to the rear brakes. 2) Does this valve reduce pressure to the rear brakes (essentially a regulator) and allows more pressure to be applied to the front drums?

On page J52 - A1, A2 of the GM build manual, it shows everything page J50 - A2 shows, with the addition of valve assembly (regulator) that feeds the line to front disk brakes. (It also denotes disk brakes in the title block of this page). 3) Does this valve reduce pressure to the front disk calipers?

If the valve on page J50 - A2 reduces pressure to rear......... and the valve on page J52 - A1, A2 reduces pressure to the front............ 4) why not just change the valve on the frame rail going to the rear brakes to compensate for the front disk / rear drum brakes as the GM engineers did for the front drum / rear drum brakes?

I'm confused about the purposes of the two different valves. I greatly respect your time and knowledge, and thanks to who ever responds.

oldandrusty is offline   Reply With Quote
Sponsored Links

Thread Tools

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
Trackbacks are Off
Pingbacks are On
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
'89 Camaro VATS Ign lock Stuck in "Run" position???? torquedork 3rd Gen (1982-92) Camaro and Firebird Tech 7 05-03-2013 05:12 PM
Heat in the "cabin" issue. CalOSUBowTie 4th Gen (1998-02) Camaro and Firebird Tech 7 05-25-2012 10:56 AM
In this thread we will re-name the "Ricer-Flyby" to the "Mustang-Flyby" LastCallKillIt General Discussion 13 09-03-2011 01:07 AM
Car makes loud "thump" when accelerating hard from a stop. Please help! hboyer90 General Camaro & Firebird Tech 12 07-12-2010 05:34 PM
Transmission shifts "quick" and has a "jerk" to it. cmw0021 V6 Camaro and Firebird Tech 6 01-15-2010 09:09 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -4. The time now is 06:24 AM.
Powered by vBulletin®
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0
Copyright © CamaroZone.com

CamaroZone.com is in no way associated with or endorsed by General Motors or Chevrolet.