Did '69 Z/28 have special booster - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old Jan 16th, 06, 09:14 AM Thread Starter
Senior Tech
gary
 
Join Date: May 2005
Location: Cookeville, TN
Posts: 103
Did '69 Z/28 have special booster

I have heard from several '69 Z28 owners that their car stops great with the low 13" or so vacuum and original 11" booster. Do the original Z28 boosters have some special valving or setup that allowed it to produce more boost? If so, where does one buy this magical booster? I have 14" vacuum, and would like to upgrade my manual brakes to power and would like to keep the stock look.

Gary
garymac69 is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old Jan 16th, 06, 09:21 AM
Senior Tech
Mark
 
Join Date: Sep 2000
Location: Shrewsbury, MA, USA
Posts: 6,509
Re: Did '69 Z/28 have special booster

Nope, same booster was used on all 69 power disc brake cars.

Idle vacuum has very little to do with the brake booster performance, since under deceleration the engine will produce a much higher vacuum, once the throttle butterfly valves on the carb close. The check valve in the booster will grab and maintain the highest vacuum seen by the intake manifold.

Mark Canning
1969 Indy Pace Car
350/300HP RPO Z11

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by Mark C; Jan 17th, 06 at 05:49 PM.
Mark C is offline  
post #3 of 7 (permalink) Old Jan 17th, 06, 11:37 AM
Senior Tech
Tim
 
Join Date: Aug 1999
Location: Spokane, WA.
Posts: 522
Send a message via AIM to sixtsevnssrs
Re: Did '69 Z/28 have special booster

I always thought the regular booster for 1969 non Z28 PB disc camaros was a Delco/Moraine and the Z28 was a Bendix. Bendix was originally painted black and the D/M was cadmium plated....someone correct me if I am wrong.

Tim


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
sixtsevnssrs is offline  
 
post #4 of 7 (permalink) Old Jan 17th, 06, 02:50 PM
Gold Lifetime Member
Den
 
DenRS's Avatar
 
Join Date: Jul 2000
Location: Sturbridge, MA
Posts: 1,413
Garage
Re: Did '69 Z/28 have special booster

According to the classic industries catelog, all 1967-68 disc brake cars used a Bendix booster and power drum cars used the delco-moraine. In 1969 only the z 28 used the bendix and the rest of the power disc and drum cars used the delco-moraine.

1969 Camaro 350, Trickflow heads, ST-10 4spd, Hotchkis suspension, Baer SS brake kit, moser 12bolt
DenRS is offline  
post #5 of 7 (permalink) Old Jan 17th, 06, 04:09 PM
Senior Tech
Jim
 
Join Date: Nov 2002
Location: Ontario & Oceanside CA.
Posts: 1,321
Re: Did '69 Z/28 have special booster

My original 69 Z/28 has a Delco Moraine booster with I believe a 902 stamp. Not sure of the number It's been a while.
GMJim is offline  
post #6 of 7 (permalink) Old Jan 17th, 06, 05:47 PM
Senior Tech
Mark
 
Join Date: Sep 2000
Location: Shrewsbury, MA, USA
Posts: 6,509
Re: Did '69 Z/28 have special booster

There were two boosters in 69, one for power brakes, and one for power disc brakes. Power drum brake part number was 5463963 and is listed under RPO J50, power disc booster was 5468165 and is listed under RPO J52. There are no changes associated with brakes listed under RPO Z28 that would indicate it got anything other than the standard power disc booster. The Z28 didn't have any special brake parts that the SS's and every other disc brake cars got. My SS has a Delco Moraine booster. It was painted black when I got the car, wether that was factory paint, or a later attempt by a previous owner, I have no clue. Underneath the paint its cad plated.

Would assume the Bendix booster was used on the power drum cars.

Mark Canning
1969 Indy Pace Car
350/300HP RPO Z11

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by Mark C; Jan 17th, 06 at 06:34 PM.
Mark C is offline  
post #7 of 7 (permalink) Old Jan 17th, 06, 06:07 PM
Senior Tech
William
 
William's Avatar
 
Join Date: May 2000
Location: Waukesha WI
Posts: 2,938
Re: Did '69 Z/28 have special booster

Bendix boosters were packaged by GM and intended for dealer retrofit on cars built with manual drum brakes. They were never used in production.
William is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome