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Re: 320i gearbox ratios



Bob,

I got the following info. from the Metric Mechanic Inc. catalog.



E21 320i 1977 - 1979
********************

Transmission 4 Speed:
- ---------------------
GETRAG 242

Ratios:

1st  3.764:1
2nd  2.043:1
3rd  1.320:1
4th  1.000:1


Differential:
- -------------
BMW Hypoid bevel final drive unit (available with Limited Slip).

Ratio  3.64:1

- ---------------------------------------------------------------------

E21 320i 1980 - 1982
********************

Transmission 5 Speed:
- ---------------------
GETRAG 245

Ratios:

1st  3.680:1
2nd  2.000:1
3rd  1.330:1
4th  1.000:1
5th  0.8065:1


Differential 5 Speed:
- -------------
BMW Hypoid bevel final drive unit (available with Limited Slip).

Ratio  3.91:1

- --------------------------------------------------------------------

E21 320i 1983
*************

Transmission 5 Speed:
- ---------------------
GETRAG 240

Ratios:

1st  3.717:1
2nd  2.019:1
3rd  1.316:1
4th  1.000:1
5th  0.805:1


Differential:
- -------------
BMW Hypoid bevel final drive unit (available with Limited Slip).

Ratio  3.91:1

- ----------------------------------------------------------------------

E21 323i Euro and 320/6 1978 - 1983
***********************************

Transmission 4 Speed:
- ---------------------
GETRAG 242 (Note: with "Baby Six" bolt pattern)

Ratios:

1st  3.764:1
2nd  2.043:1
3rd  1.320:1
4th  1.000:1

Differential:
- -------------
BMW Hypoid bevel final drive unit (available with Limited Slip).

Ratio  3.45:1

- ----------------------------------------------------------------------


Hope this helps,

Shawn...
[email protected]

'83 BMW 320is (E21)
BMW CCA Member - Boston Chapter