7AT VLSD fit MT Diff housing?

Roca_PR · 01-27-2016, 05:36 PM

Quote:

Originally Posted by Felix 808

No it won't swap directly over. It would be a good time to buy a a better LSD at the time you do the swap. You'll enjoy the 3.69's

Felix, do you have a 7at with 3.69 FD? If so, how noticeble is the difference? Do you lose top end?

chuckie311 · 01-28-2016, 12:45 AM

Of course you going to lose top end when you change gears... But how after are you doing 160 plus...I have 4.08 gears and love them

Felix 808 · 01-28-2016, 04:26 PM

Quote:

Originally Posted by Roca_PR

Felix, do you have a 7at with 3.69 FD? If so, how noticeble is the difference? Do you lose top end?

Yes it is a noticeable difference. you will not lose real world top end. Here is a link with video 7AT 3.692 Gear Review

Quote:

Originally Posted by chuckie311

Of course you going to lose top end when you change gears... But how after are you doing 160 plus...I have 4.08 gears and love them

You're going to gain top end being the car will rev higher in final gear . There is no way the car can reach it's final drive Top speed which calculates to > 200MPH. You gain speed because the car will rev closer to redline in top gear allowing the car to travel faster.

Roca_PR · 01-28-2016, 09:02 PM

Thanks guys, gonna do the 3.69 FD swap this weekend at my friend's garage, he has a 350z with a 370z diff and his getting 4.08 so I'm gonna buy his 370z MT diff.

I'll keep you guys posted, also ordered some Injen Intakes to go lagoon with my res test pipes and custom exhaust. Going to get either headers or Z1 top and lower plenum, don't know yet. Any suggestions are welcomed!

1slow370 · 01-30-2016, 12:12 AM

Ok the housings are the same but the carriers are different. Also yes the stub flanges are different from vlsd- to base and 350z to 370z. The little taper where the splines stop and the flange seats against the carrier is different on 350z stub axle flanges. So you will need whichever flanges match your carrier (lsd, vlsd, open, and 350vs 370z) and then that will fit in any housing. If you want to run any gear larger than 3.569 you will need to make sure the carrier (and as such its matching flanges) is one of the manual versions. Forgot to mention the abs ring tooth count is one tooth different on the 350z flanges as well doesnt make a huge difference though.

Roca_PR · 01-30-2016, 08:28 PM

Quote:

Originally Posted by 1slow370

Ok the housings are the same but the carriers are different. Also yes the stub flanges are different from vlsd- to base and 350z to 370z. The little taper where the splines stop and the flange seats against the carrier is different on 350z stub axle flanges. So you will need whichever flanges match your carrier (lsd, vlsd, open, and 350vs 370z) and then that will fit in any housing. If you want to run any gear larger than 3.569 you will need to make sure the carrier (and as such its matching flanges) is one of the manual versions. Forgot to mention the abs ring tooth count is one tooth different on the 350z flanges as well doesnt make a huge difference though.

Can I swap the whole pumpkin from the MT 370z into my 7AT whitout any modification?

Felix 808 · 01-30-2016, 08:29 PM

Quote:

Originally Posted by Roca_PR

Can I swap the whole pumpkin from the MT 370z into my 7AT whitout any modification?

Yes

Roca_PR · 01-30-2016, 08:44 PM

Sweet! Gonna do this tomorrow.

jchammond · 01-31-2016, 02:10 AM

Let us know how it works; I got an automatic Quaife ordered for mine; I like the factory 3.359 gear set....hope it grips well.

Sent from my iPhone using Tapatalk

1slow370 · 01-31-2016, 02:43 PM

I sold my quaife manual rear end to critical and he loves the **** out of it on his auto. it made the car much faster.

Roca_PR · 02-03-2016, 06:45 PM

Just installed tha MT differential on my 7AT. The 3.69 are awesome! Got to say that I miss my VLSD, the MT diff is open... But it was free soooo...

3rd pull way harder, just had a friendly race on a closed road with a friend with a evo X with bolt ons and mild tune, we did a 3rd gear pull (45pmh- 120mph), I pulled 3 cars ahead!!!

01-28-2016, 12:45 AM	#17 (permalink)
chuckie311 Enthusiast Member Join Date: Jul 2012 Location: las vegas Posts: 313 Drives: Q50/G37 Rep Power: 12	Of course you going to lose top end when you change gears... But how after are you doing 160 plus...I have 4.08 gears and love them __________________ Tuned by (Seb@Specialty-Z) 2011 G37 Cam'd FBO 347whp 280wtq Corn Fed 4.08 Gears

01-30-2016, 12:12 AM	#20 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7250	Ok the housings are the same but the carriers are different. Also yes the stub flanges are different from vlsd- to base and 350z to 370z. The little taper where the splines stop and the flange seats against the carrier is different on 350z stub axle flanges. So you will need whichever flanges match your carrier (lsd, vlsd, open, and 350vs 370z) and then that will fit in any housing. If you want to run any gear larger than 3.569 you will need to make sure the carrier (and as such its matching flanges) is one of the manual versions. Forgot to mention the abs ring tooth count is one tooth different on the 350z flanges as well doesnt make a huge difference though. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50 Last edited by 1slow370; 01-30-2016 at 12:15 AM.

01-31-2016, 02:10 AM	#24 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 57 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684394	Let us know how it works; I got an automatic Quaife ordered for mine; I like the factory 3.359 gear set....hope it grips well. Sent from my iPhone using Tapatalk __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

01-31-2016, 02:43 PM	#25 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7250	I sold my quaife manual rear end to critical and he loves the ** out of it on his auto. it made the car much faster. __________________ ANSWER PRICE LIST** Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

02-03-2016, 06:45 PM	#26 (permalink)
Roca_PR Base Member Join Date: Dec 2015 Location: Puerto Rico Posts: 16 Drives: 10 370Z Gray Aut. Rep Power: 9	Just installed tha MT differential on my 7AT. The 3.69 are awesome! Got to say that I miss my VLSD, the MT diff is open... But it was free soooo... 3rd pull way harder, just had a friendly race on a closed road with a friend with a evo X with bolt ons and mild tune, we did a 3rd gear pull (45pmh- 120mph), I pulled 3 cars ahead!!! Felix 808 likes this.

01-28-2016, 09:02 PM	#19 (permalink)
Roca_PR Base Member Join Date: Dec 2015 Location: Puerto Rico Posts: 16 Drives: 10 370Z Gray Aut. Rep Power: 9	Thanks guys, gonna do the 3.69 FD swap this weekend at my friend's garage, he has a 350z with a 370z diff and his getting 4.08 so I'm gonna buy his 370z MT diff. I'll keep you guys posted, also ordered some Injen Intakes to go lagoon with my res test pipes and custom exhaust. Going to get either headers or Z1 top and lower plenum, don't know yet. Any suggestions are welcomed!

01-30-2016, 08:44 PM	#23 (permalink)
Roca_PR Base Member Join Date: Dec 2015 Location: Puerto Rico Posts: 16 Drives: 10 370Z Gray Aut. Rep Power: 9	Sweet! Gonna do this tomorrow.

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