RPM to MPH CALCULATOR
This calculator gives your speed in gears at the given RPM's.
ONE: WHEEL and TIRE SIZING
85/86 XR4Ti (195/60-14)
87-89 XR4Ti (195/60-15)
Custom Size
- - -
175
185
195
205
215
225
235
245
255
265
275
285
/
- - -
30
35
40
45
50
55
60
65
70
75
-
- - -
13
14
15
16
17
18
19
20
TWO: TRANSMISSION RATIOS
T5 Ratios Chart
Manual XR4Ti
Automatic XR4Ti
T5/Other - choose by:
Borg Warner #:
- - -
1352-114
1352-115
1352-116
1352-126
1352-141
1352-154
1352-155
1352-162
1352-165
1352-169
1352-194
1352-199
1352-200
1352-202
1352-204
1352-207
1352-208
1352-209
1352-218
1352-219
1352-220
1352-225
1352-227
1352-236
1352-238
1352-239
1352-242
1352-246
1352-249
1352-251
1352-253
or
Year/model
- - -
85-86 T-Bird 2.3T Factory
85-86 SVO 2.3T Factory
87 T-Bird 2.3T Factory
87 Mustang 2.3 Factory
87-88 Mustang 2.3 Factory
89-90 Mustang 2.3 Factory
91 Mustang 2.3 Factory
92-93 Mustang 2.3 Factory
94 Mustang 3.8 Factory
94.5 Mustang 3.8 Factory
94-97 Mustang 3.8 Factory
85 Mustang 5.0 Factory
86 Mustang 5.0 Factory
86 Mustang 5.0 Factory
86.5-89 Mustang 5.0 Factory
90-91 Mustang 5.0 Factory
92-93 Mustang 5.0 Factory
94 Mustang 5.0 Factory
94-95 Mustang 5.0 Factory
85-89 Mustang 5.0 Service
79-83 Mustang 5.0 Motorsport
79-93 Mustang 5.0 Motorsport
79-93 Mustang 5.0 Aftermarket
79-93 Mustang 5.0 Aftermarket
79-93 Mustang 5.0 Motorsport
79-93 Mustang 5.0 Motorsport
79-93 Mustang 5.0 Aftermarket
93 Mustang Cobra Factory
93 Mustang Cobra Aftermarket
94-95 Mustang Cobra 5.0 Aftermarket
94-95 Mustang Cobra 5.0 Factory
First:
:1
Second:
:1
Third:
:1
Fourth:
:1
Fifth:
:1
Sixth:
:1
You may manually enter ratios.
THREE: DIFFERENTIAL RATIO:
Manual XR4Ti (3.64)
Auto XR4Ti (3.36)
Scorpio (3.64)
Custom Size
Ratio:
:1
FOUR:
RPM
1st
2nd
3rd/(D)
4th/(OD)
5th
6th
1000:
1200:
1400:
1500:
1600:
1800:
2000:
2200:
2400:
2500:
2600:
2800:
3000:
3200:
3400:
3500:
3600:
3800:
4000:
4200:
4400:
4500:
4600:
4800:
5000:
5200:
5400:
5500:
5600:
5800:
6000:
6200:
6400:
6500:
6600:
6800:
7000:
