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LJMARSDEN

Member Since: 08 Jun 2021
Location: Nottingham
Posts: 346

Ratio change with ATB?

Evening all,

Is it possible to alter the gear ratio in the LT230 at home even if you have an ATB installed already?

I have a Winchester gears stage two but I’ve since gone from an R380 to a ZF GS6. And of course now it’s cruising a bit high.

Would I encounter an issue?

Click image to enlarge 4.0 V8 Defender 90

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25th Apr 2025 7:44pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17756

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

The ATB will make no difference to a ratio change. If you are a competent gearbox mechanic it is an easy job.

25th Apr 2025 8:31pm

LJMARSDEN

Member Since: 08 Jun 2021
Location: Nottingham
Posts: 346

That’s good, I’ll get a gear set ordered.

I’ve done an engine rebuild and conversion so I should be gravy doing this to be fair. 4.0 V8 Defender 90

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26th Apr 2025 12:04pm

ashtrans
Site Sponsor

Member Since: 08 Nov 2008
Location: Harpenden
Posts: 262

see the 'installation' tab here :

https://ashcroft-transmissions.co.uk/product/1-222-gear-set/

Dave Dave

1st May 2025 10:42am

LJMARSDEN

Member Since: 08 Jun 2021
Location: Nottingham
Posts: 346

Thank you for that 4.0 V8 Defender 90

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1st May 2025 10:21pm

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