2, 2a or 3 gearbox and where to find the numbers/suffix?

**pfillery** · 12th September 2011, 06:15 AM

I'm not sure if the gearbox on my new addition is a 2 or a 3.

Where do you look for the gearbox and suffix numbers (after the grease is gone of course) and what info can be derived from them?

The slave is in a weird spot (upright on the drivers side) whereas mine is horizontal and drivers side, but the motor is a red motor and the kit looks professional due to the cast mounts so is this just a weird conversion. the rest of the box and transfer looks the same as mine on my s3, so theoretically the rest should fit? Yes? No?

**Lotz-A-Landies** · 12th September 2011, 06:24 AM

Series 1 2 and 2a usually had the number on the side of the selector cover plate.

SIII often had the number on the transfer case main body.

Remember the suffix is specific to each series, i.e. there are suffix a in both SIIa and SIII and each are different and neither the best in series.

**pfillery** · 12th September 2011, 07:03 AM

Thanks Diana. does the weird slave cylinder suggest at a glance that it may be a s2? the engine to gearbox adaptor looks like a large round cast piece and looks like steel rather than alloy. I have not yet started to strip bits out however if the box looks good thats one thing I'll keep, especially since someone has been good enough to put a removable gearbox crossmember in. The front diff looks a bit unusual too, has a reinforcing plate under the long side so not 100% certain but could it be military?

**p38arover** · 12th September 2011, 07:16 AM

**JDNSW** · 12th September 2011, 07:36 AM

Originally Posted by pfillery

Thanks Diana. does the weird slave cylinder suggest at a glance that it may be a s2? the engine to gearbox adaptor looks like a large round cast piece and looks like steel rather than alloy. I have not yet started to strip bits out however if the box looks good thats one thing I'll keep, especially since someone has been good enough to put a removable gearbox crossmember in. The front diff looks a bit unusual too, has a reinforcing plate under the long side so not 100% certain but could it be military?

The simple way to tell a 1/2/2a gearbox from a 3 gearbox is the clutch withdrawal mechanism. The earlier ones (1/2/2a), being designed for a mechanical linkage, have a horizontal shaft sticking out the driver's side of the bell housing (with an external slave cylinder and bell crank on the 2/2a) and the Series 3 has the slave cylinder bolted to the front of the bell housing and operating directly on a clutch fork. (This is not 100%, as a very few late Series 2a had a similar setup to the S3 with an all synchro box, and in any case the bell housing and clutch release mechanism can be swapped, depending on suffix letter.)

Also note that the engine end of the bell housing is different between the six and the four, and if it has a Holden engine it may not be obvious which you have.

The reinforced front (and rear) axle assembly is not specifically military, but became an option during S2a production.

John

**hodgo** · 12th September 2011, 07:59 AM

You can use either box Ser 2 or 3 in either vehicle by changing the bell housing over Its not uncommon to find a synchromesh gear box in a older vehicle and I have found ser 3 bell housings fitted to ser 2 boxes which has enabled the clutch mechanism to be used. The only sure way is to go by the number stamped on the box and then if you are not sure google Landrover gearboxes.
I have about 10 Gear boxes at the moment for rebuild and this is the only method I use when buying parts

This page was copyed from FOUR WHEEL DRIVES book
Hodgo

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