Ford 2003 Mustang Workshop Manual page 2310

Ratio)
Throttle Position Shift MPH
Light throttle 1-2
TP voltage 2-3 14-18
1.25 volts 3-4 36-38
Closed throttle 4-3 26-22
3-2 15-11
2-1
Wide open throttle 1-2 29-44
2-3 74-80 119-129
3-2
2-1
Shift Speeds 3.8L (3:27:1 Axle Ratio)
Throttle Position Shift MPH
Light throttle 1-2
TP voltage 2-3
1.25 volts 3-4 28–30 45–48
Closed throttle 4-3
3-2
2-1
Wide open throttle 1-2
2-3
3-2
2-1
Shift Speeds 3.8L (3:08:1 Axle Ratio)
Throttle Position Shift MPH
Light throttle 1-2
TP voltage 2-3 16-20
1.25 volts 3-4 38-42
Closed throttle 4-3 34-28
3-2 16-13
2-1
Wide open throttle 1-2 38-45
2-3 72-76 116-122
3-2
2-1
Km/H
9-12 14-19
23-29
58-61
42-35
24-18
12-8 19-13
47-71
73 117
32 51
Km/H
6-10 10-16
18-22 29-35
24-22 39-35
14-12 22-19
6-8 10-13
36-40 58-64
74-70 119-112
67 108
28 45
Km/H
6-10 10-16
26-32
61-68
55-45
26-21
9-7 14-11
61-72
71 114
31 50