diff interchange

poprock1 · Post by **poprock1** » Tue Oct 12, 2010 7:56 pm

Hi; still persevering with the electric sub. As mentioned, the L 3.7 diff ratio is too high; is there a 4.4 or thereabouts that will interchange with the L diff?

Gannon · Post by **Gannon** » Tue Oct 12, 2010 8:27 pm

Gen3 Outback 4 speed automatics have a 4.444 rear diff.

The 4.111 rear diff is also quite common, found on all Gen3 manuals and H6 autos.

Only difference is that they have different rear axles.

L series and early Libertys have male stubs on the diff, later models have female sockets and the stubs are on the axles.

But i have a feeling that somebody here has converted the stubs to suit earlier rear axles

rtcb65 · Post by **rtcb65** » Tue Oct 12, 2010 9:00 pm

Dont forget , if you change the diff ratio, you have to change the ratio in the front diff to the same.

Point · Post by **Point** » Tue Oct 12, 2010 11:26 pm

Gen1 Auto Lib has a 4.11 rear diff that has the right stubs for an L

Gannon · Post by **Gannon** » Wed Oct 13, 2010 5:17 am

Diff ratio wont matter in this case because he is using a FWD gearbox and using an electric motor to drive the rear diff

poprock1 · Post by **poprock1** » Thu Oct 14, 2010 3:50 pm

Thank you; 4.11 is 11% reduction; 4.444 is 20 %.Any idea of approproximate cost? Other option is to remount motor with forklift reduction cog on diff flange which gives 30%reduction; but at 100ks in front wheel drive electric motor would be freewheeling at approximately 3,500rpm.Will have to find out self destruct rpm; which was common in early forklifts if drive shaft broke.

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