Axle Code
The first two digits of the axle code identify the
ratio and capacity of the rear axle. (The third digit of the axle code identifies the
ratio and/or capacity of the front axle, if applicable.
CLICK HERE
to see a complete listing of front
axle codes).
For reference, this section from the Ford
MPC is posted here in it's entirety, to
include E-series.
CODE
YEAR
RATIO
CAPACITY
MANUFACTURER
DESCRIPTION
MAKE
MODEL
A2
'73-'76
3.70
3.3M
Ford
Limited Slip
A3
'73-'75
4.11
2.78M
Ford
Limited Slip
'76-'77
4.11
2.9M
Ford
Limited Slip
A5
'73-'76
4.11
3.3M
Ford
Limited Slip
B4
'73-'79
4.10
5.3M
Dana (Spicer)
60
Limited Slip
B8
'73-'75
3.50
2.78M
Ford
Limited Slip
'76-'77
3.50
2.9M
Ford
Limited Slip
B9
'73-'76
3.50
3.3M
Ford
Limited Slip
C7
'73-'79
3.54
5.3M
Dana (Spicer)
60
Limited Slip
C8
'73-'74
3.73
5.3M
Dana (Spicer)
60
Limited Slip
'75-'79
3.73
5.3M
Dana (Spicer)
60
Limited Slip
D6
'74-'76
3.73
7.4M
Dana (Spicer)
70
Limited Slip
D7
'73-'75
4.10
7.4M
Dana (Spicer)
70
Limited Slip
G1
'73-'5
3.54
5.05M
Dana (Spicer)
Limited Slip
G3
'73-'75
4.10
5.05M
Dana (Spicer)
Limited Slip
H1
'74-'75
3.00
3.6M
Ford
Limited Slip
'76
3.00
3.75M
Ford
Limited Slip
H2
'73-'77
3.50
3.6M
Ford
Limited Slip
'76-'79
3.50
3.75M
Ford
Limited Slip
H3
'73-'75
4.11
3.6M
Ford
Limited Slip
'76
4.11
3.75M
Ford
Limited Slip
'79
2.75
3.75M
Ford
Limited Slip
H4
'74-'75
3.25
3.6M
Ford
Limited Slip
'76
3.25
3.75M
Ford
Limited Slip
H5
'76
3.70
3.75M
Ford
Limited Slip
H7
'78-'79
3.00
3.75M
Ford
Limited Slip
H9
'77-'79
4.11
3.75M
Ford
Limited Slip
01
'75-'78
3.00
2.75M
Ford
02
'73-'77
3.00
3.3M
Ford
'78
2.72
2.9M
Ford
03
'73-'75
4.11
2.78M
Ford
'76-'77
4.11
2.9M
Ford
04
'73-'74
4.57
2.78M
Ford
'75
4.57
2.78M
Ford
Except E100/350
'75
3.00
2.75M
Ford
E100/350
'76
3.50
2.75M
Ford
E100/350
05
'73-'76
4.11
3.3M
Ford
'77-'79
2.75
2.75M
Ford
06
'75
3.70
2.75M
Ford
E100/350
'77
2.75
2.9M
Ford
07
'75
4.11
2.75M
Ford
E100/350
'76-'77
3.25
2.9M
Ford
Except E100/350
'79
4.10
7.4M
Dana (Spicer)
70
Limited Slip
08
'73-'77
3.50
3.3M
Ford
09
'73-'76
3.70
3.3M
Ford
10
'73-'75
3.25
3.3M
Ford
11
'73-'74
3.50
3.3M
Ford
'75
3.50
3.3M
Ford
Except E100/350
'75
4.11
3.6M
Ford
E100/350
'77
2.75
3.3M
Ford
'78
2.72
3.75M
Ford
12
'73-'74
3.70
3.3M
Ford
'75
3.70
3.3M
Ford
Except E100/350
'75
3.70
3.6M
Ford
E100/350
'76
3.70
3.75M
Ford
Except E100/350
'76-'78
3.00
2.9M
Ford
Except E100/350
'79
4.11
3.75M
Ford
13
'77-'79
2.75
3.75M
Ford
14
'75-'79
3.00
3.75M
Ford
'75-'76
3.00
3.6M
Ford
E100/350
'77
3.00
3.6M
Ford
15
'75-'79
3.25
3.75M
Ford
16
'75-'79
3.50
3.75M
Ford
Except E100/350
'75-'77
3.50
3.6M
Ford
E100/350
17
'73-'77
3.25
3.3M
Ford
18
'73-'76
3.50
2.78M
Ford
'76-'77
3.50
2.9M
Ford
19
'77
4.11
3.75M
Ford
22
'74
4.88
7.4M
Dana (Spicer)
70
'76-'79
3.07
5.3M
Dana (Spicer)
61
23
'74-'79
3.31
5.3M
Dana (Spicer)
61
24
'73-'77
4.10
5.3M
Dana (Spicer)
61
B-F100/500
'73-'76
4.10
5.2M
Dana (Spicer)
60
P350/500
'75-'79
4.10
5.3M
Dana (Spicer)
60
25
'73
4.56
5.3M
Dana (Spicer)
60
B-F100/500
'73-'75
4.56
5.2M
Dana (Spicer)
60
27
'73-'75
4.10
7.4M
Dana (Spicer)
70
28
'73-'79
4.56
7.4M
Dana (Spicer)
70
36
'73-'75
3.73
7.4M
Dana (Spicer)
70
37
'73-'79
3.54
5.3M
Dana (Spicer)
60
38
'73-'75
3.73
5.3M
Dana (Spicer)
60
46
'77
2.72
3.3M
Dana (Spicer)
44
47
'77
3.07
3.3M
Dana (Spicer)
44
non-locking
71
'73-'75
3.54
5.05M
Dana (Spicer)
72
'73-'75
3.73
5.05M
Dana (Spicer)
73
'73-'75
4.10
5.05M
Dana (Spicer)
SOURCE: 1973-1979 Ford Truck Master
Parts Catalog - Oct. 1979
