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CoolHand
6th May 2019, 02:03 PM
Hi, I am exploring engines options in a Defender 130 and the 4BD1T is a candidate however I am set on having an automatic transmission. I am moving on from a 2007 auto Hilux 3 litre diesel and the auto has been great for beach work and touring.
Are there any autos that could work behind the Isuzu and adapt to the LT230?
Cheers, Luke.
87County
6th May 2019, 03:44 PM
I'll watch this thread with interest - thanks CHL !

I've heard transmission names like Allison spoken of but I've not been able to find anything definite.
Vern
6th May 2019, 05:15 PM
Ausrover in Bathurst do a 6L80E to 4bd1t, that's one option.
Cor Conversions, whom have just shut shop, had some in the pipeline, Ford 6r80, aisin, 6l80e, Ford aod, but unfortunately they are out of the running now.
alan48
6th May 2019, 07:14 PM
KLR in South Windsor Sydney are doing an Allison onto a 4BDIT going into an old Td5 [bigsmile1]
CoolHand
6th May 2019, 07:26 PM
The Allisons are apparently quite large and because of this I have been told the tunnel needs cutting out and rebuilding to accommodate the transmission.
justinc
6th May 2019, 07:28 PM
The Allison 1000 series is the best candidate due to gearing, however requires a stand alone controller.
Bigbjorn
6th May 2019, 07:53 PM
Some Isuzu NPR were sold with Allison autos. You may find one in a scrap yard.
CoolHand
6th May 2019, 08:41 PM
What are peoples thoughts between the 6L80 and the Allison. Here are ratios I found.....

6L80
1st 4.027
2nd 2.364
3rd 1.532
4th 1.152
5th 0.852
6th 0.667
Rev 3.064

Allison 1000
1st 3.10
2nd 1.81
3rd 1.41
4th 1.00
5th 0.71
6th 0.61
Rev 4.49
steinhnj
11th May 2019, 02:36 PM
Ausrover in Bathurst do a 6L80E to 4bd1t, that's one option.
Cor Conversions, whom have just shut shop, had some in the pipeline, Ford 6r80, aisin, 6l80e, Ford aod, but unfortunately they are out of the running now.

What happened to COR Conversions?
Vern
11th May 2019, 02:37 PM
What happened to COR Conversions?Shut shop
350RRC
11th May 2019, 06:07 PM
Shut shop

Not a big enough market? I hope he makes component designs available for a price.

DL
Vern
11th May 2019, 06:39 PM
Not a big enough market? I hope he makes component designs available for a price.

DLNo, I think he was quite busy. Tyre kickers and the joys of running a business I think he got sick of.
He has sold everything, so no more componentary.
asmit
7th October 2020, 04:00 PM
Adapter bits available from wholesale automatics for a 4L80e or 4L85e

Land Rover Defender Isuzu 4BD1T Manual to Automatic Conversion using 4L80E Transmission - YouTube (https://www.youtube.com/watch?v=_1ZNGBxwXdg)

Video is great he's showing us all the work involved.