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1984 through 1990 When Rover (still part of British L eyland) decided to go to a five speed g earbox they picked the existing LT77 for use in certain ve hicles. The LT77 is an updated version of an old Jaguar gearbox that found its way into current model British cars manufactured by British Leyland. Yes the distance between the main and lay shafts is 77 mm. There we re two version of this gearbox. The e arlier version is known as the short stick version.

Jan 22, 2017 - Chassis numbers on Land Rovers can lead to you obtaining quite a bit of. Series IIA serial number suffixes What they are & what changed by Chassis, axle, gearbox, or engine from 1961 through 1971; VIN Registry for NAS. Land-Rover FAQ, Part IV, Defender, Component Serial Numbers. Here is a some data on. LT77S Starts with 61A00001 R380 Starts with 61A00001J.

The later version, introduced around 1988 is known as the long stick version. The Range Rover received the LT77 in 1984 because it was less expensive than the new LT85 and considered strong enough for the 3.5L V8 to use as a stre et cruising gearbox. The four cylinder Ninety and One Ten also received the LT77. When the Discovery was introduced it got the LT77 as well.

1984 through 1991 The LT85 (85 mm shaft spacing) was used in all V8 110 and 90 Land Rovers. The LT85 was originally designed under contract by Land Rover for Santana in Spain and was considered to be a strong working gearbox. Rover purchased LT85 gearboxes directly from Santana. It is also known as the Spanish Box. This gearbox was used as originally designed until 1988. A cost reduced, lighter weight, divided case version of the LT85 was introduced in 1988 and used through 1991.

The main short coming of the divided case version was its main and lay shaft bearings. The loading on t he bearings in 5th gear caused frequent gearbox failure when cruising for long periods of time under high throttle. There was also a bearing quality problem at one stage of manufacture and t he gearbox was sensitive to the t ype of oil used. In 1991 the relationship between Rover and Santana ended and the LT85 was no longer available to Rover. They needed to find a quick short term solution while they developed a new stronger g earbox.

1991 through 1993 The LT77S was introduced to the Defender V8 line and all models using the Tdi engine as an interim replacement for the no longer available LT85. The LT77S was a strengthened version of the LT77. The 'S' on the LT77S stands for 'Synchromesh'.it was modified for a 'smoother g ear change'. The bell housings and input shafts of the LT77S differ betwee n the V8 and Tdi due to Tdi's mor e aft location.

There are three t ypes of 5 speed main box, LT77, R380 and LT85 (Santana). The following questions will help identify which type of box you have: 1) Is reverse underneath 5th gear? If yes, you have an R380. If no go to question 2. 2) Is reverse gear next to 1st gear? You either have an LT77 or LT85. Question 3 will identify which one.

3) Is the main casting black or aluminum? If black, you have an LT77. If aluminum, you have a LT85, S antana box. There are 2 types of LT85. The sides of the aluminum housing will either be: a).

Land-Rover 80' Series-I Land-Rover 80' Series-I (1948-1953) Identification This should help those in need of information for Land Rover identification, restoration and upkeep of 80' Land Rovers. It also good for those who wish to learn more about the 80' wheel base vehicles. The 80' Land Rover started life in 1948 as a basic multi-purpose utility. The basic model Land Rover was joined in 1949 by the Land Rover station wagon, or Estate car, mobile welder, Mobile Compressor and Fire Engine models.

The Station Wagons and Mobile Welders had their own separate chassis number sequences. The fire engine and compressor Land Rovers had Basic model chassis numbers.

Between 1948 and 1953 a great number of parts changed. Some of the part changes are further explained by clicking on the high-lighted words below. The only 80' Land Rover part changes that the basic model changes do not apply to are the Belgian Minerva Land Rovers. These vehicles were assembled in Belgium, by Minerva with their own body work fitted.

The engine, gear-box and axles of these vehicles were standard factory items so the engine, gearbox and axle changes will apply. 1948 Chassis Numbers. The chassis number of an 80' Land Rover is (should be) exactly the same as the Car number on the vehicle identification plate. If not the the Land Rover in case has probably had some parts swapped around. Below are the listed the chassis number sequences.

I visited the British Motor Industry Heritage Trust (BMIHT), archives and went through the despatch books a number of times to make sure that these sequences are correct. The chassis number is usually found on the front left hand side chassis engine mount.