rsx2crazy

iTrader: (1)

Can anyone confirm that a 2IS Rear Differential would fit onto a 3IS?

If you know anything please chime in. (time sensitive)

Thanks guys!

rsx2crazy

iTrader: (1)

patiently waiting for an answer

redspencer

iTrader: (1)

Since the IS-F and 3IS350 8-Speed transmission are nearly identical and several IS-F owners have been successful with swapping to the 4.08 2IS differential in the past, I would say that it's highly likely that the 4.08 differential swap to a 3IS350 is feasible (though no one that I know of has actually done this mod yet).

Here is the IS-F thread for reference: https://www.clublexus.com/forums/is-...s350-diff.html.

There are at least two IS-F members with a 2IS350 rear differential for sale if you look at the last page of that thread.

Jeff Lange

iTrader: (1)

IS250 or IS350?

Mechanically the 2IS and 3IS are very similar (with the exception of the RWD IS350 and the suspension design).

If you provide a bit more information about which specific model you're looking for info about, I'm sure people (such as myself) can give you the info you're looking for.

Jeff

rsx2crazy

iTrader: (1)

Sorry. I'm talking about the 2IS350 RWD Rear Differential and the 3IS350 RWD Rear Differential.

Jeff Lange

iTrader: (1)

Externally they are similar, but they have very different gear ratios due to the different transmission. (4.08:1 for 2IS and 3.13:1 for the 3IS). You could do the swap for sure, but it would make 1st gear extremely short.

Jeff