Are the differential housings from the auto and 6MT exactly the same? So the difference is the stub axles?

 

Pumpkins are the same. The difference is the ring gear inside the differential....different ratios. Stub axles are different between the VLSD and no-VLSD equipped differentials. In other words...all differences are internal.

 

Ok, thats what i wanted to know for sure. After talking to Quaife it looks like if i use the auto's 3.3 gears with open diff stub axles it should fit just fine. I was planning on running the 3.3 gears anyways so hopefully this will work out.

 

I will sell you my 3.5 gears for a reasonable price if you are interested.

 

I have the 3.5 gears already im looking for the 3.3 out of the auto

 

Thats exactly what I want to do! Run 3.3 gears!!!

We've got FI power, now get better gearing for the power!!!

 

Does anyone know the part numbers for the 3.3 gears? From looking at the service manual there are two different sets of 3.3 gears, one for the 5at base model open diff and one set for the 5AT with the sport package that uncluded the VLSD.

 

I don't know the part number, but Nissan quoted me at like 300 bucks just for the gear.

 

I know this is OT, but what kind of benefits can be found in switching a 6mt for a 5at?

I have a local buddy who had a 5at G35 that he tracks quite a bit, and I have a TT 6mt that I do highway runs with. Am I right in thinking that it would benefit us both to swap them out?

Thanks!

 

If you switched to the 3.3 FD taller gear, you would be able to make more use of your lower gears since you have TT. I think you would even gain a potentially higher max speed since your not reaching redline as fast. For your friend, he would have a closer ratio 3.5 FD which is good for the track since he'll accelerate quicker. He'll lose a little bit on the max speed limit since he's hitting redline sooner but probably doesn't matter unless he hits 150+ on a regular basis.

 

I think there was a complete 3.3 rear pumpkin for sale in the classifieds...........Oh sorry........just bought it

 

Thanks, thats exactly what I thought. I believe, since we both have G35s, that we both have LSDs too, so the swap should be a direct replacement, with no issues. Now, all I have to do is talk him in to it!!!!

 

Its $1251.46 for a completely new final drive assembly with 3.5 final drive gear and VLSD...

Add shipping of course if you are located far from us...

New parts will cost you about $500 plus install just for the Final Drive gearing... You will also have to get a new VLSD since the one out of the AT pumpkin will not work...

It is almost less expensive to get a completely new final drive assembly (and this way labor will only be about $160

The other option is search junk yards... but then you dont know what kind of abuse the junk yard rear end will have...

 

How much for the assembly with a 3.3 final drive? I just looked up the specs of the G35 and found that ONLY the 6mts have the LSD in them, so its looking like I'm going to just stick with my stock pumpkin.

 

same price for the 3.3 assembly...

 

You can use the 350Z 5at enthusiast differential..I believe they were all VLSD equipped.

www.car-part.com search under "carrier"

There are a few for $275-350 for complete locking rear 5at differentials.

 

yes

 

I found a friend that will swap with me(he has an auto g35). So ill get the carrier and gears for free and i have a quaife thats going in it too.

 

im not sure any LSD's are going to work with the 3.3 gearing...

except the factory VLSD...

 

Jason, do you have any tech specs on the 3.36 ring gear vs the 3.5x?

(Width, diameter, bolt pattern, etc?)

Same question, but for the pinion...

spdkils