Thread: Isuzu MSA Gearbox to LT230

Originally Posted by Lotz-A-Landies

I'm running (or going to run) a 1.003 transfer ratio, Sheldon already has the gear to modify (given the time he's had it, it may be the one in his images).

And a 6 speed i believe??

Originally Posted by Vern

And a 6 speed i believe??

No 10 speed (5 speed with a splitter) it's why I have to go hi on the transfer.

Originally Posted by Lotz-A-Landies

No 10 speed (5 speed with a splitter) it's why I have to go hi on the transfer.

Thats right. What diff ratios and tyre size?

I may have to clarify a previous post. I am going to run a Disco 1 1:1.222 transfer box with a 1:1.003 gearset from Ashcrofts.

Does this make a difference with unloading the adapter shaft through the LT230?

Originally Posted by Vern

Originally Posted by Lotz-A-Landies

No 10 speed (5 speed with a splitter) it's why I have to go hi on the transfer.

Thats right. What diff ratios and tyre size?

Its running standard 3.54 ratio diffs, It currently is sitting on 31" tyres, thought I'd see how it drives before I select a permanent tyre size.

BTW: the splitter drops the ratio by half a ratio. Considering the mass of the 6x6 it should give me greater flexibility to maintain highway speed, particularly when loaded.

Cool. And series of gearbox is it?
You may even end up dropping back to a 1.192 or 1.222 transcase in the 6x6.
But that depends on gearbox ratios

IIRC its MSA-5P which apparently is the same ratios as the 5R but with the splitter.

5p should have the same ratios as a 5g.
Which is what i used to run with the 1.003 transcase and 285 tyres, i found it to tall when loaded in the mid to high gears, have now changed to a 1.192 tcase and a 5r gearbox, same mid ratios as the 5g, taller 1st and 5th.

I wouldn't spend much on a transcase just yet as i feel you might be changing it to a 1.222

Originally Posted by Vern

I wouldn't spend much on a transcase just yet as i feel you might be changing it to a 1.222

x2.