280ZX S130 Transmission Differences

In the 1979 to 1983 S130 280zx there was six transmissions that were offered. Below you will find the differences and specifications.

Manual Transmissions

Datsun/Nissan made several 4 and 5-speed manual transmissions available in the second generation Z car or S130. The 1981-1983 FS5W71B is a "close ratio" five speed transmission where the FS5R90A 5-speed transmission found in the 1983 280zx turbo is a "wide ratio" transmission. Close ratio transmissons are preferred for road racing as they allow the driver to maintain a tighter rev range between gears compared to wide ratio versions.

Finding the "optimum" transmission for your car all depends on what you are wanting from your car. For most people the "best" transmission is what is already in your car.

You can tell the difference between the FS5W71B and the FS5R90A by the shifter mounting.



Gear ratio/Transmission Model
1979 F4W71B 1979-1980 FS5W71B 1981-1983 FS5W71B 1983 FS5R90A
1st 3.321 3.321 3.062 3.500
2nd 2.077 2.077 1.858 2.144
3rd 1.308 1.308 1.308 1.357
4th 1.00 1.00 1.00 1.00
5th N/A 0.864 0.745 0.780


Automatic Transmissions

There are two Automatic Transmissions that were offered in the S130. They were the 3 speed 3N71B and 3 speed L3N71B. Thay are both a fully automatic unit consisting primarily of a 3-element hydraulic torque converer, two planetary gear sets, two multiple-disk clutches, a multiple-disk brake, a band brake and a one way sprang clutch.

Other than the number of clutch plates the transmissions are the same. The chart below will explain the differences.

Engine Model
L28E
L28ET
Model Code Number
X6703
X2770
Torque Converter Stamp
GH
A
High-Reverse clutch (front)
Number Of Drive Plates
3
4
Number Of Driven Plates
5
5
Clearence mm (in)
1.6 - 2.0 (0.063 - 0.079)
1.6 - 2.0 (0.063 - 0.079)
Thickness of retaining plate
Thickness mm (in)
Part Number
 
5.0 (0.197)
31567-X2900
 
5.2 (0.205)
31567-X2901
 
5.4 (0.213)
31567-X2902
 
5.6 (0.220)
31567-X2903
 
5.8 (0.228)
31567-X2904
 
6.0 (0.236)
31567-X2905
 
6.2 (0.244)
31567-X2906
Forward Clutch Rear
Number Of Drive Plates
6
6
Number Of Driven Plates
6
6
Clearence mm (in)
0.8 - 1.6 (0.031 - 0.063)
0.8 - 1.6 (0.031 - 0.063)
Thickness Of Retaining Plate
4.80 mm (0.1980 in)
4.80 mm (0.1980 in)
Low And Reverse Brake
Number Of Drive Plates
5
7
Number Of Driven Plates
5
7
Clearence mm (in)
0.08 - 1.25 (0.0315 - 0.063)
0.08 - 1.25 (0.0315 - 0.063)
Thickness Of Retaining Plate
Thickness mm (in)
Part Number
 
7.8 (0.307)
31667-X0500
 
8.0 (0.315)
31667-X0501
 
8.2 (0.323)
31667-X0502
 
8.4 (0.331)
31667-X0503
 
8.6 (0.339)
31667-X0504
 
8.8 (0.346)
31667-X0505
Brake Band
Piston Size mm (in)
   
Big Diameter
64 (2.52)
72 (2.83)
Small Diameter
40 (1.57)
44 (1.73)
Control Valve Assembly
Stamp mark on strainer
MEM
TRBK
Governer Assembly
Stamp Mark on Governer Assembly
M33
M33
Stall Revolution
RPM
2,000 - 2,300
2,400 - 2,700

Changing of the gear ratios is fully automatic in relation to car speed and engine torque input.

Below you will find Identification information of the automatic unit.






Sources used on this page:

  • 1979-1983 Datsun Factory Service Manuals