Differential Tag identification help
Thread Starter
|
New User
Joined: Feb 2010
Posts: 4
Likes: 0
Differential Tag identification help
<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
fficeffice" /><o
></o>
I would sure like some help decoding the tag that was located on the early rear end I have just purchased.
<o></o>
The differential was removed from a forth generation f100 pickup. I have looked for tag decoding information and can’t seem to find anything. I know there are more resources out there. I would greatly appreciate some help decoding or pointing me to a source.
<o></o>
Here is the tag information.
<o></o>
First line of the tag
C1TT 4001 J 102
(the C1TT could be CITT) the tag is hard to read
Second line
3.70 1C
(3.70 I believe to be gear ratio and the 1c to be the date)
<o></o>
Thank you for any help you can provide
<o></o>
Steve
fficeffice" /><o></o>I would sure like some help decoding the tag that was located on the early rear end I have just purchased.
<o
></o>The differential was removed from a forth generation f100 pickup. I have looked for tag decoding information and can’t seem to find anything. I know there are more resources out there. I would greatly appreciate some help decoding or pointing me to a source.
<o
></o>Here is the tag information.
<o
></o>First line of the tag
C1TT 4001 J 102
(the C1TT could be CITT) the tag is hard to read
Second line
3.70 1C
(3.70 I believe to be gear ratio and the 1c to be the date)
<o
></o>Thank you for any help you can provide
<o
></o>Steve
Postmaster
Joined: Mar 2004
Posts: 4,375
Likes: 5
From: seattle
What do you wanna know...off the top of my head its a 61 truck rear with a 3.70 gear ratio. if theres more you wanna know...shout as I and a few others with the MPC on here can decode the rest for you.
It is C1TT ....C=1960's decade, 1= 1961, T= truck and so on...
- cs65
It is C1TT ....C=1960's decade, 1= 1961, T= truck and so on...
- cs65
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
There may be some online sites, but I don't know of any.
I decoded the info using the 1957/63 Ford Truck Parts Catalog.
The 9" rear axle is essentially the same 1957/67, uses the same axle shafts (right/left is the same).
1968/72, there are two 9" rear axles.
One has a 9 3/8" ring gear, the other has slightly longer axle housing/axle shafts as the rear brakes changed in 1968 from the 11" x 1 3/4" used 1957/67 to 11" x 2 1/4"
1973/86 9's are wider still...because the width between the rear frame rails went from 33 1/2" (used prior to 1973), to 37 1/2"
Thread Starter
|
New User
Joined: Feb 2010
Posts: 4
Likes: 0
[quote=NumberDummy;8477695]Welcome to FTE.
The 9" rear axle is essentially the same 1957/67, uses the same axle shafts (right/left is the same).
Thank you very much for the info. One last question, if I read your information correctly. I understand you to say that from 1957 until 1967 the right and left side axle shafts are the same length? If I am reading this correctly I have just learned something. I thought one axle shaft was always longer by approximately 2 inches.
Did same length axle shafts also hold true for the cars?
thanks agian for the info
fficeffice" /><O> </O>
<O></O>
The 9" rear axle is essentially the same 1957/67, uses the same axle shafts (right/left is the same).
Thank you very much for the info. One last question, if I read your information correctly. I understand you to say that from 1957 until 1967 the right and left side axle shafts are the same length? If I am reading this correctly I have just learned something. I thought one axle shaft was always longer by approximately 2 inches.
Did same length axle shafts also hold true for the cars?
thanks agian for the info
ffice
ffice" /><O> </O><O
></O>
Thread Starter
|
New User
Joined: Feb 2010
Posts: 4
Likes: 0
thanks NumberDummy I found my answers. It is good to know there are people out there that can point you in the right direction.
thanks again
thanks again
Trending Topics
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
One last question, if I read your information correctly. I understand you to say that from 1957 thru 1967 the right and left side axle shafts are the same length?
If I am reading this correctly I have just learned something. I thought one axle shaft was always longer by approximately 2 inches.
Did same length axle shafts also hold true for the cars?
If I am reading this correctly I have just learned something. I thought one axle shaft was always longer by approximately 2 inches.
Did same length axle shafts also hold true for the cars?
29 11/16" long from the splined end to the inside of the flange / 1 13/64" splined end diameter / 7 1/6" flange diameter / 5 1/2" bolt circle pattern.
Fits: 1957/67 F100 w/9" rear axle.
1965/72 Passenger Cars 9" axle shafts are right/left specific. I didn't look before 1965 or after 1972.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Thread
Thread Starter
Forum
Replies
Last Post
websurfer
1997 - 2006 Expedition & Navigator
19
Feb 21, 2024 06:19 PM
AZRogala
Computer Chips & Tuners
17
Dec 11, 2015 04:30 PM
Stumpman
Explorer, Sport Trac, Mountaineer & Aviator
2
Jul 25, 2011 10:05 PM
