Telephone: +44 1582 496040



Product Information

Please note the current lead time for the supply of a gearbox is around 5-7 working days.  Whilst we aim to hold stock of units, due to high demand, this is not possible at the present time.

Once your order is placed you will be notified of your build date. Our current lead times are displayed on our home page

Please note that, due to core availability, we may not be able to offer the LT77 50A variant Defender gearboxes.  It may be that you will need to send your own unit to us for reconditioning or as an alternative you could consider upgrading to the direct fit R380 replacement.    If you email us we can advise if supplying from our stock is currently possible or not.


This section covers the LT77 and the later LT77S as used between approx 1982 to 1994.

There are many different types of LT77 used in the Landrover range, the first ones were used in about 1983, these were the suffix D (last digit of the serial number) and were the weakest type. The LT77 was developed through to the suffix H LT77S and was last used in 1994, please have a look at the related "technical information" section for further information on this progression.


Video of a LT77 being built.

What they arrive with :

The manual boxes can be catagorised as "Long Stick" as fitted to the Defender and "Short Stick" as fitted to the Disco.
If your serial number starts with any of the following then you have a longstick : 50A, 51A, 52A, 56A, 60A, 61A.
If your serial number starts with any of the following then you have a shortstick : 53A, 54A, 55A, 57A, 59A, 63A.
The longstick boxes come with the top casting that the gearlever and turret bolt to but you will need to remove the following from the old unit : the bellhousing and dowels, transfer case dowels, gearlever and turret and diff lock pivot bolt if fitted.

The shortstick boxes come with remote top assembly with reverse switch fitted but you will need to swap over the bellhousing & dowels, transfer case dowels, extension gearstick and diff lock pivot bolt.


If desired we can rebuild your own unit. 

If you are sending your unit to us for rebuild please see the video below "what each type of LT77 comes with" before sending your unit/(s) to us. The unit/(s) you are sending in should be sent in like this.  If sending both a gearbox and transfer box the units should also be seperated before shipment. We reserve the right to charge up to an additional £30,  plus vat if applicable, for units that are not sent in like this.


Videos to show what each type of LT77 comes with.

Long Stick

Short Stick

Video to show where to find the LT77 serial number.



To see an explanation of our core deposit charge please click here

In order to calculate your shipping costs you will need to put the items in your shopping basket and confirm your delivery address. Please do not proceed to the payment stage unless you are ready to order.

Sorry we are unable to collect from customers outside of the UK.

Product Code: LT77

Technical Information / FAQ's » (Click to Expand Collapse)


LT77 Development

The LT77 was introduced to the Landrover range in approx 1983 with the suffix 'D' box and was developed over the years to the suffix 'H' which was last used in 1994.

The 'D' and 'E' are very similar the only difference being the reverse gear was a little fatter in the E,

When they went from 'E' to 'F' larger layshaft bearings were used.

The 'G' was further improved by all the gear teeth including the pinion getting approx 20% thicker. Also a much wider pump was used to increase the lubrication and cope with the fact that some of the LT77's were now being supplied oil cooled, ie V8 NAS 90, 3.9 RR Classic and the 3.5 EFI Discos.

The 'H' (termed the LT 77S) was the same as the 'G' in terms of strength but used a different synchro set up called the'Double Synchro', In reality it didn't work much better.

Upgrades to the R 380

Should the LT77 fail on your vehicle you will usually have the opportunity to replace it with a later R 380, unfortunately surcharges will apply but if you are either planning to keep the vehicle, working it hard for a living or going on an overland trip where both reliability and the facility to add an oil cooler are important then this additional expenditure may well be worthwhile.

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