Has anyone heard of or seen a kit to regear the transfer case HIGH RANGE of the 80 series permanent 4wd transfer case? It is available for lots of other types of trucks like Nissan, LandRover, Suzuki etc, but I cannot find such gears for the 80 series. I do find low range gearing kits, but I want modified high range gearing, as it would seem easier and cheaper to do compared to changing R&P wich is very expensive.
Transfer case re-gearing (1 Viewer)
- Thread starter NielsC
- Start date
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This seems like a great idea, so there's obviously a major problem with it.
They do make them, but not for an 80 it seems:
LandCruiser 40, 60 & 70 series 55% low range gears with 8% high range under-drive
LandCruiser 40, 60 & 70 series 55% low range gears with 8% high range under-drive
This was available in Japan and I've encountered a couple trucks with this modification. Here's the pic from the box that was still in one of the trucks. The company info is on the back, not sure if they're still in business but worth checking into.
If you have a part time case, you can buy under drive gears for the high side. If you have a full time case, well, no one is quite sure yet. I have asked both cruiser outfitters and valley hybrids with no real answer other than they may or may not be able to get them from Japan at an as yet undetermined time in the future.
Why would you want to go into overdrive?
Do you run really small tire sizes? Or the engine is too powerful for your application?
Most people do exactly the opposite.
Do you run really small tire sizes? Or the engine is too powerful for your application?
Most people do exactly the opposite.
890man
SILVER Star
No one is talking about overdrive except mtc75 who listed something for other cruisers.
890man
SILVER Star
Oops, sorry.
Underdrive and overdrive kits for full time cases for sale in the link I posted: スープアップ
Yeah, seems a little pricey. But to get the effective gear ratio, you'd need two R&P kits so it might be a cheaper option for some setups.
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orangefj45
Supporting Vendor
We also have a few of the OD gear sets in stock. They do not require any internal Tcase modification.
Here are a couple of pictures.
Georg @ Valley Hybrids & Cruiser Brothers
wardharris
SILVER Star
What my partner Georg said
Available online
HF2AOD-CB Overdrive Gear Set - Cruiser Brothers
And through our installing shops and partner resellers
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alia176
SILVER Star
Can someone mark up the above pic with the underdrive gears please? I'm merely curious, as I have the 3:1 low gear set and I'm getting lost in the underdrive vs overdrive semantics.
orangefj45
Supporting Vendor
The low range gear set; usually 3.15:1 is a two gear set.
It includes the smaller gear on the idler shaft/cluster and the larger gear on the output shaft/cluster.
The high range OD or UD gear set replaces the input gear as well as the smaller gear on the output shaft/cluster.
Georg @ Valley Hybrids & Cruiser Brothers
It includes the smaller gear on the idler shaft/cluster and the larger gear on the output shaft/cluster.
The high range OD or UD gear set replaces the input gear as well as the smaller gear on the output shaft/cluster.
Georg @ Valley Hybrids & Cruiser Brothers
The next big question is how close will this get you back to stock. For instance, 4.88's and 315's supposedly gets you 6% under stock gearing. So given the same tire size, where are you going to be with a 10% reduction ?
High range underdrive is supposedly in development (or vendor negotiations) planning stage. I'm sure Kurt will let us know when they're available. I might be one of the first guinea pigs.
