67 GTO Carb help - Pontiac GTO Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 02-13-2019, 03:20 PM Thread Starter
 
Join Date: Dec 2018
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
67 GTO Carb help

So I bought a 67 GTO. I'm excited to slowly restore and enjoy it. Although the car is in very good shape, I have some work to do. When I brought the car home, there were a few parts that came as extras. One of the parts was a Rohester Quadrajet. Attached are some pics, is it worth anything, and is this what came on it from the factory? Also is a picture of the carb that is already on the car (also a Quadrajet - but looks different). Thanks for any help.
Attached Thumbnails
Click image for larger version

Name:	GTO Carb 4.jpg
Views:	81
Size:	139.1 KB
ID:	117639   Click image for larger version

Name:	GTO Carb 2.jpg
Views:	79
Size:	135.0 KB
ID:	117641   Click image for larger version

Name:	GTO Carb 3.jpg
Views:	73
Size:	212.9 KB
ID:	117643   Click image for larger version

Name:	GTO CARB ON 2.jpg
Views:	74
Size:	138.4 KB
ID:	117645   Click image for larger version

Name:	GTO CARB ON 1.jpg
Views:	73
Size:	137.0 KB
ID:	117647  

MBGB33 is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 02-13-2019, 08:09 PM
 
Join Date: Jul 2016
Location: North Louisiana
Posts: 564
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 59 Post(s)
The Pontiac Q-jets with the slashed vent tubes usually came on hp models. These are the type of Q-jets we always raced.

You can ID each Q-jet by the number which is stamped vertically, on the driver side. Can see it in 2 of your pics, but can't make it out the last one at all. The 1st one is either 7028268 or 7029268. Can't tell if that 4th digit is an 8 or 9. If 8, it's a '68 model. If 9, it's a '69 model. The 6 denotes Pontiac, and the last number being an even number usually denotes that it was used on an auto trans car.

Here's some good Q-jet ID info.

https://cliffshighperformance.com/ar...g-number-chart

Earlier Q-jets have the number on a round metal disc, on the driver side.

Here's a '70 Pontiac #7040273 . The 4th digit is the last number of the year model. The 2nd pic is of one of the disc ID tags.
Attached Thumbnails
Click image for larger version

Name:	7040273 .jpg
Views:	34
Size:	53.9 KB
ID:	117657   Click image for larger version

Name:	7027218  .jpg
Views:	37
Size:	30.0 KB
ID:	117659  

Last edited by bigD; 02-13-2019 at 08:42 PM.
bigD is online now  
post #3 of 7 (permalink) Old 02-13-2019, 11:55 PM
 
drg44's Avatar
 
Join Date: Jun 2018
Location: Martinez, CA
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Was curios about the Q-jet, if it came from a 68 or 69?
drg44 is offline  
 
post #4 of 7 (permalink) Old 02-14-2019, 11:59 AM Thread Starter
 
Join Date: Dec 2018
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Great information. Thanks. The number on the side is 7029268 wf.
MBGB33 is offline  
post #5 of 7 (permalink) Old 02-14-2019, 05:42 PM
 
PontiacJim's Avatar
 
Join Date: Dec 2012
Location: Gastonia, NC - Born & raised in Connecticut - 31 years
Posts: 3,561
Mentioned: 1 Post(s)
Tagged: 1 Thread(s)
Quoted: 367 Post(s)
Garage
Quote:
Originally Posted by MBGB33 View Post
Great information. Thanks. The number on the side is 7029268 wf.
Carb shows fitting a 1969 GTO 350HP 400CI/Automatic, 350HP 400CI/automatic Grand Prix, 360HP 428CI/automatic Bonneville, 370HP/390HP 428CI Grand Prix, 325HP 350CI HO/automatic Firebird, and 330HP 400CI/automatic Firebird.

WF is where the carb was manufactured.
PontiacJim is online now  
post #6 of 7 (permalink) Old 02-20-2019, 07:50 PM
 
Join Date: Apr 2017
Location: Dripping Springs, TX
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
May as well rebuild it and put it on and see how it runs. Quadrajets are fantastic!
jthoms is offline  
post #7 of 7 (permalink) Old 02-21-2019, 07:40 PM
 
Lemans guy's Avatar
 
Join Date: Oct 2014
Location: Nashville, Tennessee
Posts: 685
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 55 Post(s)
I use a quick fuel black diamond carb on my Lemans. Qjets are great and have lots of fans. But if you are not absolutely set on that QFT has lots of advantages. The Black Diamond carb is jet coated to reduce heat, it has sight glasses in the bowls, four corner idle setting and one thing I like it has no choke pull off, those things always get stuck eventually.

Quick fuel uses a cut in the back of the choke plate to accomplish the same break as the pull off.

Mostly though the QFT Very easy adjustments of all of the carb circuits. On top of the carb are the four idle air bleeds,...little jets and the four high speed air bleeds,....you can change them with a screwdriver. The primary and secondary jets are ez to change same as a Holley, but the Power Valve Channel Restricors PVCR...which control how much fuel your power valve actually delivers, once again are mini jets you can change with a screwdriver. Holleyís You would have to drill. Of course the idle feed restrictors is the same easy to change.

In addition the vacumn secondaries are adjustable two ways, first the spring can be changed to get it right and then the vacumn to the spring can be adjusted with a screw right on top to fine tune it in.

All the jets or bleeds or springs are readily available from Quick Fuel which Holley now owns. Qjets do require the metering rods and assorted parts that are sometimes hard to source. Some may have stockpiles and can easily work on them. I donít have that stockpile and donít want to hunt them down.

So there is more than one way to do it and I like to curve the carb myself by dialing it in with the correct Air Fuel Ratios and engine feel, both should match.

Some like Edelbrock or Demon carbs or Holley or Carter,...some like fuel injection. There is no wrong way,....just your way!!!
Lemans guy is offline  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac GTO Forum 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 for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
67 400 Timing/Carb Help AKGTOJoe50 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance 5 06-08-2016 09:00 PM
Q jet carb vs holly carb??? mbspeed 1964-1974 Tempest, LeMans & GTO Technical and Electrical Wiring 6 08-07-2013 06:51 PM
help with 66-67 carter carb fasterfiero 1964-1974 Tempest, LeMans & GTO Technical and Electrical Wiring 6 11-29-2011 12:54 PM
Help needed with putting a '67 GTO carb back to stock 3rd1967gto 1964-1974 Tempest, LeMans & GTO Technical and Electrical Wiring 4 06-25-2011 07:20 PM
67 gto 2bbl carb choke problem bnichols04 1964-1974 Tempest, LeMans & GTO Technical and Electrical Wiring 5 10-08-2007 10:04 AM

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