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  #1  
Old January 16th, 2018, 07:03 PM
Tadel001
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Tim Adelman
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Identify transmission

Can you help identify this transmission. I know it is an LT77 but trying to figure out if it is a late model.
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  #2  
Old January 16th, 2018, 07:20 PM
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Identify transmission

Defender V8 box. Not sure the age as the suffix seems to be missing.
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Old January 16th, 2018, 07:35 PM
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Its a 61A See Ashcroft's site

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.
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Old January 16th, 2018, 08:19 PM
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Yah. 61A means is a Defender V8 box. The question is more the suffix. Looks like an "l" which would mean it is an R380, not an LT77. Take a picture from the side and it should be obvious which one it is.
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Old January 16th, 2018, 08:27 PM
Tadel001
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Tim Adelman
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Yes, it is the suffix that is throwing me off. I was told is was an LT77 V8 that was overhauled by RDS into a diesel 4 cylinder set up.

Don’t have a full profile picture but will try to get one. I assume this pic isn’t helpful
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Old January 16th, 2018, 08:33 PM
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Does RDS normally stamp the gearbox, like Ashcroft and others, after a rebuild?

Decoded mine earlier today, H suffix, with a rebuilders stamp under the SN.
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Old January 16th, 2018, 09:01 PM
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A side picture from the right side will make it obvious. The box vents are in different locations is the easiest way to tell.
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Old January 16th, 2018, 09:10 PM
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LT77 on left, R380 on right. One is Disco, one Defneder. Ignore that... Note location of red plugs for vent lines.
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Old January 16th, 2018, 09:51 PM
Tadel001
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Tim Adelman
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So I currently have a t9A suffix E I the truck with a 2.5td. The 61A is available to install. As I read the gear ratio (Land Rover Gear FAQ), the LT77 suffix E has more acceleration (if there is such a thing with a 2.5td) than the 61A but the 61A has more top end speed. For those understanding the gear ratio does that seem right?
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Old January 16th, 2018, 10:05 PM
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Identify transmission

The suffix is only to do with strength of parts. The prefix sets the gear ratios. But you said it was rebuilt with different gears. It could have anything in there. Some of the gearing can be mixed and matched. You would need to measure or ask the person that built it.
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