3IS LSD Options: IS F / IS300 / FR-S
#1
3IS LSD Options: IS F / IS300 / FR-S
Now that people are starting to take delivery, they may be interested in upgrading their differentials (hey, it could happen).
The 3IS IS250 uses the same differential as the 2IS IS250, which means that the complete pumpkin from an IS300 or FR-S is bolt-in for the car if you want an OEM T2 Torsen.
Gear Ratios:
3IS IS250 RWD: 3.73:1
3IS IS250 AWD: 4.10:1
1IS IS300 MT: 3.73:1
1IS IS300 AT: 3.91:1
Scion FR-S: 4.10:1
The 3IS IS350 RWD uses the same differential as the 08-09 IS F among others, as such swapping in a complete 10-13 IS F or 2013 LS460 F-Sport differential is possible, but you may want to keep the 3IS gearing as it is preferential.
Gear Ratios:
3IS IS350 RWD: 3.13:1
2IS IS F / LS460 F-Sport: 2.937:1
The 3IS IS350 AWD uses the same differential as the 2IS IS350. There are no factory options to swap into this, you will need to look into something like a Quaife or similar.
Jeff
The 3IS IS250 uses the same differential as the 2IS IS250, which means that the complete pumpkin from an IS300 or FR-S is bolt-in for the car if you want an OEM T2 Torsen.
Gear Ratios:
3IS IS250 RWD: 3.73:1
3IS IS250 AWD: 4.10:1
1IS IS300 MT: 3.73:1
1IS IS300 AT: 3.91:1
Scion FR-S: 4.10:1
The 3IS IS350 RWD uses the same differential as the 08-09 IS F among others, as such swapping in a complete 10-13 IS F or 2013 LS460 F-Sport differential is possible, but you may want to keep the 3IS gearing as it is preferential.
Gear Ratios:
3IS IS350 RWD: 3.13:1
2IS IS F / LS460 F-Sport: 2.937:1
The 3IS IS350 AWD uses the same differential as the 2IS IS350. There are no factory options to swap into this, you will need to look into something like a Quaife or similar.
Jeff
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Jarraj (01-18-18)
#3
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Jeff,
Great Info..!!!
Are they using the same 08-09 IS-F "ELSD" Differential in both the IS350 F-Sport w/8 speed tranny and Regular IS350 w/6speed tranny ???
Being that the 350 F-Sport RWD now has 8 gears.. I thought they would have two different diffos..
~ Joe Z
Great Info..!!!
Are they using the same 08-09 IS-F "ELSD" Differential in both the IS350 F-Sport w/8 speed tranny and Regular IS350 w/6speed tranny ???
Being that the 350 F-Sport RWD now has 8 gears.. I thought they would have two different diffos..
~ Joe Z
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My question was just RWD specific... (no mention of AWD)
Just realized the RWD IS350 Base pkg & F-Sport pkg are both rocking the 8 Speed
(I've only been "reading up" on the F-Sport)
LoL
Thanks
~ Joe Z
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#10
Lexus Test Driver
More gear ratio information in detail: (Look for 駆動装置)
The 8-spd in 2014 IS350 RWD
http://lexus.jp/models/is/specificat...350/index.html
The one in ISF
http://lexus.jp/models/isf/specifica...ons/index.html
後退 - reverse
第8速 - 8th gear....
The 8-spd in 2014 IS350 RWD
http://lexus.jp/models/is/specificat...350/index.html
The one in ISF
http://lexus.jp/models/isf/specifica...ons/index.html
後退 - reverse
第8速 - 8th gear....
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Jeff Lange
IS - 2nd Gen (2006-2013)
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08-18-23 07:46 PM