Landy Gearboxes
First, find your gearbox:
LT95 LT77 & LT85 R380
1 3 R 1 3 5 1 3 5
2 4 R 2 4 2 4 R
LT95 4 speed syncro, built in transfer box,
perm 4x4, vacuum operated diff lock optional overdrive
- Range Rover manuals up to 1984
- Series III Stage 1 V8
- 101 Forward Control with shorter bellhousing
- Early 110 V8 up to 1985
LT85 5 speed "Santana", seperate LT230 transfer box
- V8 110
- V8 127/130
- V8 90 1985 onwards
LT77 5 speed with seperate LT230 transfer box LT77S
as above but with "improved" syncromesh from 1991
- 90, 110, 127/130 - 2.25, 2.5 petrol/diesel, 2.5 turbo
diesel, 200Tdi
- Range Rover "long stick" type 1983-1985 V8
- Range Rover "short stick" 1985 on, V8 / VM /
200Tdi
- Discovery 1989-1994, 200Tdi / V8 / Mpi
VM diesel Rangies and MPI Discos have unique bellhousings
R380 5 speed with seperate transfer box launched with the
300Tdi engine
- Defender 300Tdi / V8 / Td5 1993 - present
- Discovery 300Tdi / V8 / Mpi / Td5 1993 - end of Td5 Disco
production
- Range Rover classic 300Tdi / V8 1993 - 1995
- Range Rover P38 diesel & V8 manuals
LT77/LT77S Manual Gearbox |
|||||||
Model |
Box S/N |
1st |
2nd |
3rd |
4th |
5th |
Reverse |
90/110 British Military |
51A |
3.985 |
2.519 |
1.5074 |
1.00 |
0.8314 |
3.701 |
90/110 pre' 200TDI |
50A |
3.585 |
2.3008 |
1.5074 |
1.00 |
0.8314 |
3.701 |
Disco 200TDI 90/110 200TDI |
55A 56A |
3.692 |
2.132 |
1.397 |
1.00 |
0.77 |
3.429 |
90/100 V8 Disco V8 |
60A, 61A |
3.321 |
2.132 |
1.397 |
1.00 |
0.77 |
3.429 |
The LT77 gearbox was used from 1983 to 1989 on 90/110s with 4 cylinder engines and 1990/91 on all 90/110s. LT77S were used all all Discoverys to 1993 and 90/110s during 1992/93. All of these boxes use a separate transfer case called the LT230 which is mounted directly onto the output flange of the gearbox.
| R380 Manual Gearbox | |||||||
| Model | Box Prefix/Suffix | 1st | 2nd | 3rd | 4th | 5th | Reverse |
| Defender
2.5NA (short bellhousing) |
50J | 3.700 | 2.300 | 1.507 | 1.00 | 0.831 | 3.701 |
| Disco/RR
300TDI Disco TD5 Defender 200TDI Defender 300TDI Defender TD5 |
55J ??? 55H 56J 68L |
3.692 | 2.132 | 1.397 | 1.00 | 0.770 | 3.429 |
| Disco/RR V8i | 53J | 3.321 | 2.132 | 1.397 | 1.00 | 0.732 | 3.429 |
The R380 gearbox was used from 1994 to present on Defenders and Discoverys. All of these boxes use a separate transfer case called the LT230 which is mounted directly onto the output flange of the gearbox. Reverse is to the right and down. This box was brought in as a replacement for the LT77S. It is noted to be smoother shifting than its predecessor
| LT85 Manual Gearbox | ||
Gear |
Ratio |
|
| 1st | 3.6497 | |
| 2nd | 2.1804 | |
| 3rd | 1.4362 | |
| 4th | 1.00 | |
| 5th | 0.7951 | |
| Reverse | 3.8242 |
The LT85 gearbox was used from 1984 to 1991 on 90/110s with V8s and 1986 on for Isuzu diesels. All of these boxes use a separate transfer case called the LT230 which is mounted directly onto the output flange of the gearbox. This is normally referred to as the "Santana" gearbox as it was used on Santana Land Rovers.
| LT95 Manual Gearbox | ||
Gear |
Ratio |
|
| 1st | 4.0691 | |
| 2nd | 2.4480 | |
| 3rd | 1.5049 | |
| 4th | 1.00 | |
| Reverse | 3.6643 |
The LT95 gearbox was used from 1969 to 1983 on Range Rovers, all 101s, Stage Is and 90/110s with V8s in 1983/84 and 1985 with Isuzu diesels. All of these boxes use an integral transfer case. The transfer case is a "full time" units with a lockable, mechanical differential. The differential is locked via a vacuum actuator.. Note that the gearbox and transfer case use separate sumps.
| ZF4HP22 Automatic Gearbox | ||
Gear |
Ratio |
|
| 1st | 2.48 | |
| 2nd | 1.48 | |
| 3rd | 1.00 | |
| 4th | 0.728 | |
| Reverse | 2.086 |
| LT230 Transfer Case | ||||
Gear |
Ratio |
Tooth Count |
Models Used and Comments |
Box S/N |
| Low Range | 3.320 | 26/41/19/40 | LT77, LT77S, LT85 | 13D, 22D, 28D |
| 4.340 | 26/41/20/55 | Maxi-Drive
Engineering Low range gear set. Exact ratio depends on input and intermediate gears that are used which vary slightly by model. |
||
| High Range | 1.003 | RR 3 speed auto (TF727) | ||
| 1.222 | 26/41/40/31 | LT77/LT77S | 28D | |
| 1.1923 | 90 V8s with LT85 gearboxes | 29D | ||
| 1.211 | ||||
| 1.206 | ||||
| 1.410 | 26/41/?/? | All
90s except V8 All 110s except 2.5/2.25l petrol and N/A diesel |
13D, 22D | |
| 1.667 | 26/41/35/37 | 110s with 2.5/2.25l petrol and N/A diesel |
The LT230 is an all gear transfer case. It has been used on all Defenders, Discoverys, pre' 1989 Range Rovers and 90/110s with LT77/LT77S/LT85/R380/ZF4HP22 gearboxes. The transfer case is a "full time" unit with a lockable, mechanical differential. The differential is locked via a mechanical linkage through a spring inside the box.
| LT230 Gear Part Numbers | ||||
Box S/N |
Input P/N,teeth |
Intermediate, |
Low |
High |
| 13D | FRC5428,26 | FRC5424,19/41/? | FRC5435,40 | FRC5425,? |
| 22D_suffix_B | FRC5428,26 | FRC7884,19/41/? | FRC7434,40 | FRC7885,? |
| 29D suffix B | FRC5428,26 | FRC7428,19/41/? | FRC7434,40 | FTC7429,? |
| 22D_suffix_C | FRC8917,26 | FRC9460,19/41/? | FRC7434,40 | FRC7885,? |
| 29D suffix C | FRC8917,26 | FRC9552,?/?/? | FRC7434,40 | FRC9551,? |
| 22D suffix E on | ? | ? | FTC1741,40 | ? |
| 32D_to_LA939975 | ? | FRC9552,?/?/? | FTC1084,? | FTC1085,? |
| 32D_from_MA939976 | FTC4188,? | FRC4190,?/?/? | FTC1084,? | FTC4189,? |
| LT95 (Transfer Case section) | |||
Gear |
Ratio |
Tooth Count |
Models Used |
| Low Range | 3.3206 | All | |
| High Range | 0.996 | Australian Spec 110 with 4BD1 Isuzu Diesel | |
| 1.113 | |||
| 1.174 | 101FC | ||
| 1.3362 | 110 |
All LT95 transfer gears are interchangeable. They can be changed with the gearbox on the vehicle.
Credits for this page must go to many sources, including Ashcroft transmissions
and especially to somebody called John, from whose page I plagerised mercilessly