VW Gear Ratios
Codes located at bottom of Bell Housing
Tranny
Code
FN, 4T, FF, FO
7D
IS
FK
2H
4K
9A, ACM, ACN
ASF, AON, ACH
AGS, AOP
ABG, 2Y
ACD, AEN
AUG
AWY
AMC, CHE
ATH
APW
AVX
 final
drive
3.89
3.94
3.94
3.89
3.94
3.89
3.67
3.67
3.94
3.67
3.67
3.67
3.67
3.67
3.67
3.67
4.25
 1st

3.45
3.45
3.45
3.45
3.45
3.45
3.45
3.45
3.45
3.45
3.45
3.45
3.45
3.45
3.45
3.45
3.45
 2nd

1.94
1.94
1.94
2.12
2.12
2.12
2.12
1.97
1.94
2.12
2.12
1.94
1.94
1.94
1.94
1.75
1.94
 3rd

1.29
1.25
1.25
1.44
1.44
1.44
1.44
1.37
1.37
1.44
1.44
1.44
1.44
1.29
1.29
1.37
1.29
 4th

.91
.91
.91
1.13
1.13
1.13
1.13
1.03
1.03
1.13
1.13
1.13
1.13
.97
.91
.97
.91
 5th

.71
.71
.75
.91
.91
.89
.89
.75
.75
.91
.89
.89
.89
.80
.75
.85
.75
 RPM/Speed calculator
Tire size:
width (mm)
sidewall ratio
rim size (in)

Final Drive:
Gear ratio:
Option 1:
RPM

Option 2:
speed
kph or mph?
example: 
for 
195-50-15 
tires

width = 195
sidewall = 50
rim = 15

fd = 3.89
gear = .89

RPM = 3600
gives: 
speed = 112kph, 
       70 mph

speed = 140
kph/mph = kph
gives: 
RPM = 4464rpm
Thanks to VL Enterprises for the VW gearbox information

Other transmission related stuff can be found at Jan Vanderbrante's site
Or, more specifically, in the transmission directory


comments?
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