Interesting, I'll post if anything changes. So far so good.

 

finally got my 3.692 vlsd diff in over the weekend. I've had time to drive it in town and on the road. I haven't had any cels and things seems to be good.

The difference with acceleration is good. The car seems to always be ready to go. I think I would like the 3.90's even more.

Vlsd is huge. I don't spin my tire(s) nearly as much: it's just go. The RPM levels are barely noticable on the highway. 80 is a few hundred rpms more but you don't really notice. The best part is stepping on the pedal and the car just drops a gear and goes. On the city streets, the torque is great. Just touch the gas and it rolls nicely and when you need more just give it more.

First drive out I pegged the limiter... put it into ds and held 1st. it got there before I was ready. gears 1-2-3 are quick. you're way past the speed limit before you know it.

THIS is the best mod to date. You really feel the difference more than any other bolt on.

CHUCKIE- you are absolutely correct with how you handled the driveshaft. Just change the flange on the diff to the new diff and everything else remains the same. I wasted money on driveshafts and now have extra's to get rid of cheaply...

 

nice review thanks

 

So ONE guys actually did the 3.69 swap, I'm was looking at an 08 G35X pumpkin to swap into my G37X , The swtich from 3.36 to 3.69 is worth it?

 

I got a set of 3.69 gears out of my 6MT if anyone is looking...

 

Just the gears or the entire pumpkin? I don't think the 3.69 gears fit in the 7AT's differential.

 

youll need the pumpkin too to do the swap

 

to make this work for AWD 7AT sedan, which exactly pieces one needs to make this flawless?

 

Just the gears...

 

I've been wondering this myself. Now i'm a noob when it comes to this sort of thing however I believe you would need to have the same final drive gear on the front differential as well so it doesn't cause problems with the AWD.

I have a 2009 g37x sedan. What ive been wondering is if a front differential out of a 2008 g35x sedan 5at will be a direct bolt on to my car like the rear differential is from a 2008 g35 5at? That would result in the same 3.69 gear in the front and the rear if possible.

Can anyone give me any insight if I am on the right track or do I clearly have no idea what I am talking about?

 

ok so i finally got around to installing a 3.69 differential from an 08 g37 5at in my 7at rwd sedan and i noticed no difference whatsoever even went to the dragstrip car feels same my 1/4 mile times,trap speed, 60' times are all the same as other times
i even did the gear ratio test by spinning the wheel and counting how many turns i get out of the driveshaft and it definately is a 3.69 diff
anyone have any ideas?

 

^^Did you happen to change your tire size?

 

personally, I think 3.90 gears are the best for us 7at guys. a 3.69 from a 3.3 is not a huge drop in gearing so it's not going to make a dramatic difference. I went with 3.9 and added a factory vlsd and I know for sure the car is much faster 0-100 mph, as I pull stock 37 sedans by two cars easily. kdawg, it not a huge gearing change so the difference in feel is not going to be dramatic, try a 3.9 or 4.08 gear instead. you'll really notice it then.

 

same tire size still and thats what im thinking next 3.90's but dont know if they fit this 3.69 automatic differential

 

i did the 3.69s and wish i did the 3.9's