T18 Diff Gear Ratios

[the_van_can]

Hi all,

I've been searching for ages but cant find the gear ratios for T18 diff,
apparently there is a series 1 and a series 2 which is slightly rarer in aus.
I have herd that the series 1 is 3.9 but I'm not 100% sure. Also is there a
way to find out without pulling the diff apart, some sort of code written on the diff,
the code on the chassis won't really help because the diff has changed cars.

Thanks

[Sam-Q]

I am only aware of a 1:3.9

look at the transaxle code on the firewall for the gearing

[Sam-Q]

good old Norbie:

[the_van_can]

ok thanks for that info, I'm upgrading my KE70 Panel Van diff. So from memory the Stock diff in the pano is 3.9:1 so that would mean that any T18 Diff I get will be the same 3.9:1 and will be T series.

[Sam-Q]

well the only thing that fits in is an S series so your going to have to chop and change the spring mounts to make it happen

[jakel]

MY series 1 T18 diff is 3.9.

[Sam-Q]

and my second gen T18 TE72 diff was also 3.9:1 so unless theres an auto version or something I think that's it

[Jacobxxx]

if you get a t series from an ra60 they come in auto ratio

[Vance]

my t18 diff was from an auto and was 4.1 and i changed it to 3.9 from a manual ra60.

[jakel]

USA came in auto 4.1