Go Back   MustangForums.com > Ford Mustang Tech > Classic Mustangs (Tech)
Sign in using an external account
Register Forgot Password?
Search


Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 06-27-2007, 05:17 PM   #11
66GTKFB
5th Gear Member
 
Join Date: Mar 2007
Location:
Posts: 2,623
Default RE: 72 Mach I 351 Q-Code....what do the codes mean?

I use the Mustang Production Guide, Vol 2 for the info. It's apparently incorrect. I found a second source that indicates the 'Q' code was used in 71 to 73 for 351 4V engines but omits the 'R' code engine, and a third that shows 'Q' engines in 71 and 73, no 72, but has the 'R' code listed for 71 and 72. Your Marti report is a pretty good authority so to you, congratulations on your 351 4V 'Q' code. I'll stick to my 65 and 66 Fastbacks.
Jim
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
66GTKFB is offline   Reply With Quote
Old 06-27-2007, 07:27 PM   #12
machme72
 
Join Date: Jan 2007
Location:
Posts: 14
Default RE: 72 Mach I 351 Q-Code....what do the codes mean?

the q code is the engine. It was called the cobra jet while the stronger engine was Called High Output. If i remember correctly the difference between the two was in the intake but i cannot recall. so if you have a q code you have a 351 Clevland with a four barrel carb(4V) I'm actually restoring a 72' q-code mach one myself. also if you go to the autoparts store such as autozone they can look up your engine by code, which is really nice because of the two differnt put into the 72..are you doing a complete tear down?
__________________
machme72 is offline   Reply With Quote
Old 06-29-2007, 02:01 AM   #13
ceswert
1st Gear Member
 
Join Date: May 2007
Vehicle: 07 Shelby SS
Location: CA
Posts: 69
Default RE: 72 Mach I 351 Q-Code....what do the codes mean?

Hello,
I am no expert, however Wikipedia was of great help.
ceswert
ceswert is offline   Reply With Quote
Old 06-30-2007, 12:41 PM   #14
pramos920
 
Join Date: Jun 2007
Posts: 5
Default RE: 72 Mach I 351 Q-Code....what do the codes mean?

Not tearing the car down at all. It just needs a few things. Thanks for the info. Posted a pic in the "pics of your ride" thread.
pramos920 is offline   Reply With Quote
Old 06-30-2007, 12:57 PM   #15
Soaring
I ♥ Acer
 
Join Date: Oct 2004
Location:
Posts: 17,565
Default RE: 72 Mach I 351 Q-Code....what do the codes mean?

"There were no Mustangs with the letter 'Q' in 71 and 72. "
Jim

Not sure where you got that information Jim. The Q code 351 Cobra Jet engine was available in both the 71 and 72 models.
Soaring is offline   Reply With Quote
Old 06-30-2007, 02:29 PM   #16
66GTKFB
5th Gear Member
 
Join Date: Mar 2007
Location:
Posts: 2,623
Default RE: 72 Mach I 351 Q-Code....what do the codes mean?

Glen,
I know you're right, I can't find any viable back-up documentation that lists the code, the descriptive name, the displacementand the year together, and the non-Ford sources I do have are screwed up, the Mustang Production Guide, Vol 2, for one.
Jim
66GTKFB is offline   Reply With Quote
Old 06-30-2007, 02:52 PM   #17
BlackLX
4th Gear Member
 
Join Date: May 2006
Location:
Posts: 1,576
Default RE: 72 Mach I 351 Q-Code....what do the codes mean?

That's interesting. The red book doesn't show that there was a Q code in '71 but shows that there was one in '72 and '73.
__________________
No good
BlackLX is offline   Reply With Quote
Old 06-30-2007, 03:48 PM   #18
66GTKFB
5th Gear Member
 
Join Date: Mar 2007
Location:
Posts: 2,623
Default RE: 72 Mach I 351 Q-Code....what do the codes mean?

One more time - well, one more.To quote 'The Official Mustang Price Guide' for 64 to 73 models, 2000-2001 edition (I don't buy these every year), there were 'Q' codes for years 69 to 73, 428 CID for 69 and 70, 351C CIDfor 71 to 73. The 71 listed at 280hp @ 5800 rpm, 345 ft lbs @ 3800 rpm, called a 'Cobra Jet' (Ram Air was code 'M', Boss 351 was code 'R'). The 72 and 73 listed at 266hp @ 5400 rpm, 301 ft lbs @ 3600 rpm. The 73 was called a 'Cobra Jet, the 72 was not listed with any special name. Note the drop in horse power in the 71 to 73 years.
Jim
66GTKFB is offline   Reply With Quote
Old 06-30-2007, 05:56 PM   #19
Soaring
I ♥ Acer
 
Join Date: Oct 2004
Location:
Posts: 17,565
Default RE: 72 Mach I 351 Q-Code....what do the codes mean?

1971-72 you could opt for a Q code 351C-4v low compression Cobra Jet that only had about 280 horsepower. The 73's were even lower compression.
http://reviews.ebay.com/Ford-351-Cle...AT:-1:STORES:3
Soaring is offline   Reply With Quote
Old 06-30-2007, 05:56 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
351, 351cj, 72, 73, air, cars, cobra, code, codes, engine, jet, letter, mach, mustang, mustangs, qcode, ram

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Refbacks are Off

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 10:05 AM.

© Internet Brands, Inc.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup