Mike

iTrader: (1)

compared to what?

Adam West

iTrader: (3)

Does it even matter - are you tracking your X on a daily basis? Unless you're driving the car really hard on the street I can't really see it helping even if we could install one.

ANMVQ

iTrader: (13)

This feel off, I was thinking of doing the 4.08 swap on mine, but how will the Tcase act? Anyone know, we all know that the tcase locks up if the rears slip? Has anyone done it ?

HoldmyMouse

X won't have the luxury to change 4.08 FD ratio due to front diff.

ANMVQ

iTrader: (13)

Why the front diff doesn't turn all the time ?

Lt8Che

iTrader: (6)

I ended up doing the Quaife LSD on my G37x coupe because I plan on tracking very regularly. I would be curious if there was a way to make the 4.08 work on the X as well.

HoldmyMouse

When it does, your front will spin at 3.3 vs rear at 4.08. So unless you can change front diff ratio too, then you can't run it. If you must have it, you can turn off the awd computer and be full time rwd.

ANMVQ

iTrader: (13)

Thanx man that thing looks to small to have a gear change LOL

HoldmyMouse

You might be able to swap for 3.69 gears from the 07-08 G35x. Not sure how drastic the change is but should still be a noticeable since its a 10% higher ratio.

The entire carrier assembly should be direct bolt on judging from pictures and also the parts compatible across all the V36. You just might be the first 37x to do so.

ANMVQ

iTrader: (13)

So do you think these a real difference going from 3.36 to 3.69 ? I might look into that

yergermeister

It would be about equal to a manual going from a stock 3.68 to a 4.08.

yergermeister

This is what I've been trying to find out. I heard the rear differential bolts up directly from an 08 g35. However I'm not sure about the front and I've yet to get a definitive answer as no one seems to have done this on the X.

I found a front differential from an 08 g35x for $200 on eBay. I want to do the switch but I really don't want to be the guinea pig for this one.

yergermeister

And not to bomb the thread but to answer the OPs question yes an LSD on theX is a achievable. And it's been done along with the arguing as why or why not to do it. Check it out.

https://www.myg37.com/forums/engine-drivetrain-and-forced-induction/260522-vlsd-on-awd-g.html

HoldmyMouse

They seem to be physically identical and also the code is same which is F160A

Go to pg 118
http://www.nicoclub.com/FSM/G35/Sedan/2008/DLN.pdf

Go to pg 128
http://www.nicoclub.com/FSM/G37/Sedan/2011/DLN.pdf

ANMVQ

iTrader: (13)

So I did some more poking around and it looks like I have 3.69 gears? They didn't change them till 2010 X's. I have a 09