I recently did another 3.5fd w/vLSD Pumpkin Swap, and i thought id share with you guys how I went about it.

CAUTION: Install at your own risk. This is only a tutorial, and I will not resume responsibilty if anything goes wrong with your install.

First: Raise car and place on jack stands


Remove exhaust mid pipe


Remove bottom rear plastic trim pieces





Remove rear swaybar

 

Lube drive shaft flange bolts and bushing bolts
I used PB Blaster


Lube rear bolt and disconnect wheel sensor harness


Lube axle stub bolts, then remove those bolts
Hang axles with wire or zip ties so they are not just dangling free

 

Remove drive shaft flange bolts


Place jack under pumpkin and remove pumpkin bushing bolts.
Im using a transmission jack adapter to make it a little easier.
I picked up this adapter @ Harbor Freight for about $40.

 

Remove rear nut


now lower jack by about 2", then push jack forward just enough for the rear stud to slide out. Now reach around top and you will see a rubber hose clamped onto the differential cover. Disconnect [dont cut unless you have a replacement hose] that hose [sorry forgot to take picture of this step]. Then you can completely lower the jack and remove the pumpkin.

Install is the Reverse.

TIP for Install: raise pumpkin in place with rear stud in its hole, then install bushing bolts and install till hand tight. Then hand tight the rear nut. Then torque the bushing bolts. Then torque the rear bolt. Going little by little like this ensures a smooth install because alignment wont give you any hassle.

 

Torque Specs:

Pumpkin
Drive Shaft Bolts - 54 ft/lbs
Bushing Bolts - 74 ft/lbs
Axle Bolts - 52 ft/lbs
Rear Nut - 81 ft/lbs

Sway Bar
Bushing Nuts - 25 ft/lbs
Endlink Nuts - 41 ft/lbs

 

random question, but what is the rear bumper on your g called? Is it the chargspeed of g35's?

 

customer's car. Kenstyle rear

 

Nice DIY, I did a pumpkin swap a few years ago, wasn't that bad but this certainly helps.

 

Am attempting this tomorrow, wish me luck!!

 

what final drive did the G originally have?

 

great write up......

-J

 

If its 5AT, its 3.3

Excellent write up BTW

 

Thanks! This made the swap super easy!

Hardest part was getting the bolts in while holding the new one up.

I skipped taking the sway bar off - plenty of room with it on.


What a difference! No more one wheel wonder for me - i wouldn't of guessed what extra pull it would have. I thought i was very good at feathering the gas and getting the car to accelerate with limited wheel spin but lsd is the way to go!

 

hey guys, know this is a late reply but i just recently did my swap and i have started to get a buzzing electrical noise that pulsates my brake pedals. My guess is that i went wrong somewhere with the abs sensor, I left the sensor from the stock open diff connected to the car and connected it to the LSD. This was two days ago and today i started getting this problem, just wondering if anyone has encountered this before.

Thanks

 

No, I swapped mine out just last year and used my original sensors, no issues. Reinstall the sensors, or change them out to the ones that came on your car.

 

I am about to swap in a g37s VLSD with 3.69 gears. If i buy the auto i have to swap driveshaft flanges.. Is this task as simple as it looks? just taking the center nut off and pulling it out? Does it need pressed in? New seals? Thanks in advance.

 

If you buy the auto I dont think it will have the 3.69 gears im pretty sure only the 6 speed comes with that gearing.

 

I also own a infiniti g37 Auto and wanted to swap my diff onto my 350z manual. I assumed the g37 all came with 3.69 fd. How can I verify this

 

2009 up auto came with 3.357 across the board.
2008 auto came with 3.692 across the board.
Earlier years vary.