IS F (2008-2014) Discussion topics related to the IS F model

ISF with IS350 Diff...

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Old 08-26-12, 11:33 AM
  #31  
Gymkata
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Originally Posted by Jowett
Hello folks... first post. For those looking for a something a bit more everyday friendly, some of the LS 460 cars use a 3.13 gear ratio... It should fit. Anyone consider the the 12 bolt 8.4"/220 mm out of the Supra? If it bolts in, new axles would be needed... extra expense there.
A 4.09 would be a bit much for me. I would think that a 3.13 would make a small but noticeable difference.
Old 08-26-12, 11:34 AM
  #32  
Dv8tion388
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Originally Posted by darbs242
will an 06-2010 is350 carrier fit? are they all the same? there are quite a few of these around pretty cheap
Yes.
Direct swap.
If I'm not mistaken the 250 as well.

~Dv8
Old 08-26-12, 11:40 AM
  #33  
MRxSLAYx
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Do we have any available swaps with a lower final drive? For the type of power that a few of us are running, longer gearing is the way to go.
Old 08-26-12, 12:01 PM
  #34  
darbs242
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3.5 ish would be awsome
Old 08-26-12, 01:09 PM
  #35  
Just F Me
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Originally Posted by Vroomin350
Dude, your car sounds amazing.
DUH....IS F + No Mufflers + No Resonator =

I one of the guys in socal has Headers + no resonator + no mufflers...ZOMG
Old 08-26-12, 02:44 PM
  #36  
darbs242
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just bid on a is350 carrier on ebay...
Old 08-26-12, 02:45 PM
  #37  
obby
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^ i too have header... thinking of removing the resonator too.
Old 08-26-12, 02:47 PM
  #38  
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Originally Posted by darbs242
just bid on a is350 carrier on ebay...
Nice!! if you plan on doing the swap your self, you would need a 12mm allen wrench.
Old 08-26-12, 04:47 PM
  #39  
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Originally Posted by obby
Nice!! if you plan on doing the swap your self, you would need a 12mm allen wrench.
I own a Snap-On franchise, were not too short on tools around my place.

Last edited by darbs242; 08-26-12 at 05:39 PM.
Old 08-26-12, 05:54 PM
  #40  
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will the is350 diff fit on a '11 ISF?
Old 08-26-12, 06:01 PM
  #41  
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i believe it fit but you will loose your LSD as the is350 doesnt come with LSD and the 08-09 isf have ELSD.
Old 08-26-12, 06:17 PM
  #42  
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I suspect these would also fit - the GS430 has a 3.769, the LS600HL has a 3.916, and the AWD LS460 has a 3.133. They all use the same pinion bearings, so in all likelihood, they're all possible swaps if you're willing to have the gears installed. Not sure if the entire unit will bolt in with all of them, but on the GS, it definitely should be a bolt in process because the rear subframes are the same on GS and IS.
Old 08-27-12, 07:02 AM
  #43  
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Does the GS430 have a elsd?
Old 08-27-12, 08:06 AM
  #44  
MRxSLAYx
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Originally Posted by obby
^ i too have header... thinking of removing the resonator too.
That resonator is the most important part of your exhaust system IMO. Remove it and it all goes to hell.
Old 08-27-12, 11:45 AM
  #45  
Jeff Lange
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Originally Posted by Dv8tion388
If I'm not mistaken the 250 as well.
No, the IS250 uses a different differential design, it will not work without a subframe swap and custom driveshaft or adapter. It's smaller.

Originally Posted by Rider
will the is350 diff fit on a '11 ISF?
Yes, but you'd lose your Torsen LSD. If you were going to do it, I'd try to find a different Ring & Pinion set for your LSD, or get an IS350 differential and an aftermarket LSD for that case.

Originally Posted by obby
i believe it fit but you will loose your LSD as the is350 doesnt come with LSD and the 08-09 isf have ELSD.
ELSD is electronic LSD, swapping in an IS350 LSD won't lose anything, as it's not actually related to the differential, it's just a part of the traction control system (independent of the differential itself).

Jeff


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