Power Stroke Transmission Guide

Ford Automatic & Manual Transmission Ratios, Model Years

With few exceptions, identifying the transmission behind a diesel equipped Ford F-Series is as easy as finding your model year in the chart below. In the case of the ZF 5 speed (S5-42 and S5-47), a close ratio model can be differentiated from a wide ratio model by examining the identification tag on the driver's side of the transmission case. There, under "Total Ratio" the ratio spread will be listed. Some transmissions can be found in gasoline engine applications, but it's important to note that transmissions are not interchangeable between Ford diesel and gasoline applications.

Transmission

Type

Manufacturer

Model Years

1st
(:1)

2nd
(:1)

3rd
(:1)

4th
(:1)

5th
(:1)

6th
(:1)

R
(:1)

C6

3 spd
auto

Ford Motor Company

1983 - 1988 6.9L, 7.3L IDI

2.46

1.46

1.00

n/a

n/a

n/a

2.18

T-19

4 spd
manual

BorgWarner

1983 - 1987 6.9L IDI

4.02

2.41

1.41

1.00

n/a

n/a

6.96

E4OD

4 spd
auto

Ford Motor Company

1989 - 1997 7.3L Power Stroke

2.71

1.54

1.00

0.71

n/a

n/a

2.18

ZF S5-42
(close ratio)

5 spd
manual

ZF Friedrichshafen

1987 - 1994 6.9L IDI, 7.3L IDI, 7.3L Power Stroke

4.14

2.37

1.42

1.00

0.77

n/a

3.79

ZF S5-42
(wide ratio)

5 spd
manual

ZF Friedrichshafen

1987 - 1994 6.9L IDI, 7.3L IDI, 7.3L Power Stroke

5.72

2.94

1.61

1.00

0.76

n/a

5.24

ZF S5-47
(close ratio)

5 spd
manual

ZF Friedrichshafen

1995 - 1997 7.3L Power Stroke

5.08

2.60

1.53

1.00

0.77

n/a

4.66

ZF S5-47
(wide ratio)

5 spd
manual

ZF Friedrichshafen

1995 - 1997 7.3L Power Stroke

5.72

2.94

1.61

1.00

0.76

n/a

5.24

4R100

4 spd
auto

Ford Motor Company

1999 - 2003 7.3L Power Stroke

2.71

1.54

1.00

0.71

n/a

n/a

2.18

5R110W
(TorqShift)

5 spd
auto

Ford Motor Company

2003 - 2010 6.0L & 6.4L Power Stroke

3.11

2.20

1.54

1.09*

1.00

0.71

2.88

6R140
(TorqShift)

6 spd
auto

Ford Motor Company

2011 - current 6.7L Power Stroke

3.97

2.32

1.52

1.15

0.86

0.67

3.12

ZF S6-650

6 spd
manual

ZF Friedrichshafen

1999 - 2003 7.3L Power Stroke

5.79

3.30

2.10

1.31

1.00

0.72

5.23

ZF S6-750

6 spd
manual

ZF Friedrichshafen

2003 - 2010 6.0L & 6.4L Power Stroke

5.79

3.30

2.10

1.31

1.00

0.72

5.23

* TorqShift 5R110W transmission normally shifts 1st-2nd-3rd-5th-6th; 4th ratio not used during normal driving. During cold weather operation (< 5° F), transmission shifts 1st-2nd-3rd-4th-6th.