Differential discovery!

corbin09 · 02-16-2012, 10:14 AM

Hey guys,

I just wanted to let you know that there may be a cheaper alternative for those of us that are looking at differentials.

We had a VLSD from a 350 laying around so we played with it, and it worked. All you need is the longer stub from the 350z or 370z with vlsd.

We had to slightly modify the stub by grinding down the tip of it SLIGHTLY but everything fit and worked without any issues.

So all in all, this would be a good bang for the buck mod for those with a base model. I spend 135.xx on the stub, and 100 on the diff. So for under 250.00 with fluid I went from an open diff to a vlsd oem unit.

Hope someone finds this useful, let me know if you have any questions, and if you do not want to modify your stub, we can also work something out to where I can manufacture plug and play stubs for those if you need them and dont feel like measuring and grinding anything.

Mods if this is in the wrong place please delete but I couldnt think of anywhere better to put it.

wheee! · 02-16-2012, 10:43 AM

Nice find.... anything is better than open diff!

threeseventy · 02-16-2012, 11:52 AM

What if any difference is there with the gearing on the 350 vs the 370 box?

corbin09 · 02-16-2012, 11:54 AM

The ring you swap over so the gear ratio wont change... this is only going from open diff to VLSD. Just a cheap mod to get rid of the dreaded "peg leg"

somatic · 02-16-2012, 12:08 PM

i witnessed it myself

threeseventy · 02-16-2012, 12:09 PM

EPIC POST! eRep added. MOD This should be a Sticky, this area seems like the only part of the forum where guys care about LSD...

Quote:

Originally Posted by corbin09

The ring you swap over so the gear ratio wont change... this is only going from open diff to VLSD. Just a cheap mod to get rid of the dreaded "peg leg"

vividracing · 02-16-2012, 12:35 PM

Repped for ingenuity

I'll keep an eye on this thread for long term results.

erkthejerk73 · 02-16-2012, 12:37 PM

pics of the process?

corbin09 · 02-16-2012, 02:42 PM

I dont have full pics of the process but let me see what we do have. It was actually pretty straight forward. Once all of the bracing/exhaust was out of the way it really didnt take that long. I will work on a step by step guide this weekend for you guys.

Red__Zed · 02-16-2012, 02:44 PM

This is well known. The diff assemblies are identical, only change was the move from a 3.5 to 3.7 ratio

somatic · 02-16-2012, 03:04 PM

Quote:

Originally Posted by Red__Zed

This is well known. The diff assemblies are identical, only change was the move from a 3.5 to 3.7 ratio

why hello sir

lol

corbin09 · 02-16-2012, 03:13 PM

Quote:

Originally Posted by Red__Zed

This is well known. The diff assemblies are identical, only change was the move from a 3.5 to 3.7 ratio

it is actually not a 100% straight forward swap, there was some slight modification required to make it fit, so I dont think you are correct in saying that all the switched was the gear ratio. The stub had to be modified to fit in the diff assembly correctly with the vlsd(long) stub from a 350z.

I just wanted to post up to give people some cheap options to upgrade to an lsd without spending 1500+. I didnt see anyone else on here post about this, so I did.

Red__Zed · 02-16-2012, 03:17 PM

Quote:

Originally Posted by corbin09

it is actually not a 100% straight forward swap, there was some slight modification required to make it fit, so I dont think you are correct in saying that all the switched was the gear ratio. The stub had to be modified to fit in the diff assembly correctly with the vlsd(long) stub from a 350z.

I just wanted to post up to give people some cheap options to upgrade to an lsd without spending 1500+. I didnt see anyone else on here post about this, so I did.

Yeah, you changed the same stub axle you would have needed to change if you put in the VLSD off another 370z....

This swap has been done countless times.

corbin09 · 02-16-2012, 03:33 PM

Awesome.

Like I said, this was not plug and play and I used all 350z parts, some of which needed to be modified.

I was just trying to spread some light on options that are available. It looks like there were a few people in here that did not know this, and may benefit from it.

While I appreciate you bringing up the fact that this has been done countless times, I am talking specifically about all 350z parts used to do this swap to keep the cost down. If you have a link to someone who swapped all 350z parts in their 370z diff, please post a link and I will be more than happy to quit posting.

Red__Zed · 02-16-2012, 03:41 PM

Quote:

Originally Posted by corbin09

Awesome.

Like I said, this was not plug and play and I used all 350z parts, some of which needed to be modified.

I was just trying to spread some light on options that are available. It looks like there were a few people in here that did not know this, and may benefit from it.

While I appreciate you bringing up the fact that this has been done countless times, I am talking specifically about all 350z parts used to do this swap to keep the cost down. If you have a link to someone who swapped all 350z parts in their 370z diff, please post a link and I will be more than happy to quit posting.

This guy did it already:

Nissan 370Z Forum - View Profile: Red__Zed

The parts are identical. To go from base to VLSD, you need a stub from a VLSD equipped model, doesnt matter whether the parts come from a 350 or 370.

Hell, people have been putting the lsd in fx35s for years now.

02-16-2012, 10:14 AM	#1 (permalink)
corbin09 Track Member Join Date: Jun 2009 Location: Dallas tx Posts: 665 Drives: 370z Rep Power: 279	Differential discovery! Hey guys, I just wanted to let you know that there may be a cheaper alternative for those of us that are looking at differentials. We had a VLSD from a 350 laying around so we played with it, and it worked. All you need is the longer stub from the 350z or 370z with vlsd. We had to slightly modify the stub by grinding down the tip of it SLIGHTLY but everything fit and worked without any issues. So all in all, this would be a good bang for the buck mod for those with a base model. I spend 135.xx on the stub, and 100 on the diff. So for under 250.00 with fluid I went from an open diff to a vlsd oem unit. Hope someone finds this useful, let me know if you have any questions, and if you do not want to modify your stub, we can also work something out to where I can manufacture plug and play stubs for those if you need them and dont feel like measuring and grinding anything. Mods if this is in the wrong place please delete but I couldnt think of anywhere better to put it.

02-16-2012, 10:43 AM	#2 (permalink)
wheee! A True Z Fanatic Join Date: Sep 2009 Location: Mod Capital of Canada Age: 57 Posts: 7,354 Drives: cars. lots of cars. Rep Power: 40181	Nice find.... anything is better than open diff! __________________ H&R / Stillen / Berk / HKS / Swift / Michelin / UpRev / SPC / Amuse Rep / Seibon / Fringe XVO / TWM / more... My Journal

02-16-2012, 12:08 PM	#5 (permalink)
somatic A True Z Fanatic Join Date: Aug 2011 Location: Grapevine, TX Posts: 1,767 Drives: 2013 GS350 Rep Power: 16	i witnessed it myself __________________ Passport 9500i HW\|Short Tail Exhaust\|Evo-r CF Fangs & Fog\|Blacked Out Roof\|Status Elite Intake 19/22\|AUTO Shift Boot DIY\|GTR Button\|Rear Limo Tint\|S2carbonworks hood dampeners\|Falken Rt-7m 20"s w/Jade Project Mu Tuner Lugs\|P:JDM Oil Cap\|Tow Hook\|SOLD

02-16-2012, 12:35 PM	#7 (permalink)
vividracing The370Z.com Sponsor Join Date: Jun 2009 Location: Gilbert, AZ Age: 37 Posts: 7,306 Drives: 350Z,370Z,GTR Rep Power: 38	Repped for ingenuity I'll keep an eye on this thread for long term results. __________________ Rocky @ Vivid ♦ 480.966.3040 x236 ♦ Rocky@vividracing.com Email, PM, or call me directly for aggressive The370Z.com member pricing!!!

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02-16-2012, 11:52 AM	#3 (permalink)
threeseventy Track Member Join Date: Mar 2011 Location: Huntington Beach, CA Posts: 598 Drives: Opinion Rep Power: 15	What if any difference is there with the gearing on the 350 vs the 370 box?

02-16-2012, 11:54 AM	#4 (permalink)
corbin09 Track Member Join Date: Jun 2009 Location: Dallas tx Posts: 665 Drives: 370z Rep Power: 279	The ring you swap over so the gear ratio wont change... this is only going from open diff to VLSD. Just a cheap mod to get rid of the dreaded "peg leg"

02-16-2012, 12:37 PM	#8 (permalink)
erkthejerk73 Track Member Join Date: Mar 2011 Location: cincinnati Posts: 927 Drives: 13 F150 FX4 eb Rep Power: 15	pics of the process?

02-16-2012, 02:42 PM	#9 (permalink)
corbin09 Track Member Join Date: Jun 2009 Location: Dallas tx Posts: 665 Drives: 370z Rep Power: 279	I dont have full pics of the process but let me see what we do have. It was actually pretty straight forward. Once all of the bracing/exhaust was out of the way it really didnt take that long. I will work on a step by step guide this weekend for you guys.

02-16-2012, 02:44 PM	#10 (permalink)
Red__Zed A True Z Fanatic Join Date: Jul 2010 Location: window seat Posts: 28,940 Drives: Mostly on two wheels Rep Power: 119	This is well known. The diff assemblies are identical, only change was the move from a 3.5 to 3.7 ratio

02-16-2012, 03:33 PM	#14 (permalink)
corbin09 Track Member Join Date: Jun 2009 Location: Dallas tx Posts: 665 Drives: 370z Rep Power: 279	Awesome. Like I said, this was not plug and play and I used all 350z parts, some of which needed to be modified. I was just trying to spread some light on options that are available. It looks like there were a few people in here that did not know this, and may benefit from it. While I appreciate you bringing up the fact that this has been done countless times, I am talking specifically about all 350z parts used to do this swap to keep the cost down. If you have a link to someone who swapped all 350z parts in their 370z diff, please post a link and I will be more than happy to quit posting.