4.08 Gear Install (7AT) Review

Chuck33079 · 07-26-2013, 07:33 AM

You're changing the gears in the wrong direction if you're going turbo down the line. You would end up making first and second gear completely useless.

1slow370 · 07-27-2013, 05:30 PM

yeah the factory manual rear gear would be about as high as you would want to go for a turbo car. the more low and midrange power you have the smaller gears are are better. i'm going to have way too much low end so i want the automatic ratio. if you are going single turbo then a slightly taller gear doesn't hurt for getting off the line.

Muney2bMade · 08-24-2013, 04:00 PM

Sorry for bringing this thread up from a while ago but just a few questions.

Will this mess anything up in the long run, does it put more stress on the car?

Can you keep everything else stock and simply just do a 4.08 gear swap, rear axle will be completely fine no matter how many times you floor it from a dig?

and what is this "micro polished" how much is it and what exactly does it do. Probably obvious, but just making sure.

Thanks

Don't own a Z, or any car as of now, but planning on getting one in March and I want this to be one of my first mods. Thanks again.

binary0x01 · 10-15-2013, 08:02 PM

Thanks for the review.

Seb's putting in a Quaife LSD, 4.08 gears, whiteline diff bushings and the same fluid you've got, this monday

EDIT: I've got a manual gearbox though, but I like shifting

chuckie311 · 10-15-2013, 10:35 PM

Mine go in on Wednesday

10-15-2013, 11:05 PM

I have 6MT would you have some kind of an idea of the install price at speacilty Z.

binary0x01 · 10-15-2013, 11:22 PM

Quote:

Originally Posted by David Parra

I have 6MT would you have some kind of an idea of the install price at speacilty Z.

As per op:

Quote:

Originally Posted by dthem370

It all depends on how cheap you can find a manual 370Z differential. I got lucky and got one for a little under 400 bucks. As far as the rest of the stuff goes, here is the approximate amount they cost.

Gears (4.08s)= $535
Install kit = $300
Fluid = $30
370Z manual diff = best price you can find one for
Labor/install = $500, depends on your local shop.

So you are looking somewhere around 1400 +tax and whatever price you can find a used/new manual 370Z diff.

dthem370 · 10-16-2013, 11:02 AM

Quote:

Originally Posted by binary0x01

Thanks for the review.

Seb's putting in a Quaife LSD, 4.08 gears, whiteline diff bushings and the same fluid you've got, this monday

EDIT: I've got a manual gearbox though, but I like shifting

You welcome, you will love them man. Make sure you got some good tires on there because you will definitely be breaking those tires loose much easier.

binary0x01 · 10-17-2013, 08:37 PM

Quote:

Originally Posted by dthem370

You welcome, you will love them man. Make sure you got some good tires on there because you will definitely be breaking those tires loose much easier.

Yeah that's next on the list.

I wanna do the tires and the SpecialtyZ clutch and flywheel combo install.

After that I'll prolly do front and rear camber arms and toe bolts and all that stuff just to finish it off. But then again, there's always room for seats and a proper harness bar and rear spoiler lol... stuff keeps on adding up!!

blueranger · 10-19-2013, 10:53 PM

I am wanting to do this Mod with the stock 6MT 3.69 gears.

My 7AT is a non-sport and need to know what parts are needed if I use a sport version pumpkin with stock LSD.

If anyone can chime in

1slow370 · 10-20-2013, 01:13 AM

I did that for critical, if you get a 370z manual sport pumpkinyou can just bolt it to your car no extra parts required. Just make sure you get the pumpkin completely assembled with shafts in it. And don't get one from a g37 sedan different flange on those.

blueranger · 10-21-2013, 09:16 PM

Quote:

Originally Posted by 1slow370

I did that for critical, if you get a 370z manual sport pumpkinyou can just bolt it to your car no extra parts required. Just make sure you get the pumpkin completely assembled with shafts in it. And don't get one from a g37 sedan different flange on those.

Any chance of getting a Part # to try and locate a 370Z manual sport pumpkin?

I would like to find one online

blueranger · 10-21-2013, 11:08 PM

Is this the correct one?

ImageUploadedByTapatalk1382414914.736443.jpg

1slow370 · 10-22-2013, 12:00 AM

that would work but it's a one tire fire

1slow370 · 10-22-2013, 12:06 AM

This is the correct Diff FINAL DRIVE ASSY - 370Z (Z34) 2009+ 3.7L V6 (B/SPORT+T/SPORT) 6-Spd M/T :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com

07-26-2013, 07:33 AM	#61 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	You're changing the gears in the wrong direction if you're going turbo down the line. You would end up making first and second gear completely useless. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

07-27-2013, 05:30 PM	#62 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7250	yeah the factory manual rear gear would be about as high as you would want to go for a turbo car. the more low and midrange power you have the smaller gears are are better. i'm going to have way too much low end so i want the automatic ratio. if you are going single turbo then a slightly taller gear doesn't hurt for getting off the line. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

10-15-2013, 08:02 PM	#64 (permalink)
binary0x01 Track Member Join Date: Jun 2012 Location: Idaho Posts: 892 Drives: 2012 6-SPEED 3.7L Z Rep Power: 13	Thanks for the review. Seb's putting in a Quaife LSD, 4.08 gears, whiteline diff bushings and the same fluid you've got, this monday EDIT: I've got a manual gearbox though, but I like shifting __________________ Tune (by Seb@SpecialtyZ) -- Upgraded Parts List : When in doubt, use brute force; if it doesn't work, you aren't using enough. Last edited by binary0x01; 10-15-2013 at 11:23 PM.

10-15-2013, 10:35 PM	#65 (permalink)
chuckie311 Enthusiast Member Join Date: Jul 2012 Location: las vegas Posts: 313 Drives: Q50/G37 Rep Power: 12	Mine go in on Wednesday binary0x01 likes this.

10-19-2013, 10:53 PM	#70 (permalink)
blueranger Track Member Join Date: Aug 2012 Location: Albuquerque NM Posts: 577 Drives: 2010 Roadster 7AT Rep Power: 306	I am wanting to do this Mod with the stock 6MT 3.69 gears. My 7AT is a non-sport and need to know what parts are needed if I use a sport version pumpkin with stock LSD. If anyone can chime in __________________ F.I. Stage 1 Twin Turbo #48 \| E85 FlexFuel \| Built 7AT \| F.I. 34 Row Oil Cooler \| F.I. Flex Plate \| F.I. 19 row Trans Cooler \| MT ET Street S/S \| ECUTEK Tuned by Seb \| RPM Roll Bar

08-24-2013, 04:00 PM	#63 (permalink)
Muney2bMade Base Member Join Date: Aug 2013 Location: tulsa Posts: 19 Drives: 06 g35 Rep Power: 11	Sorry for bringing this thread up from a while ago but just a few questions. Will this mess anything up in the long run, does it put more stress on the car? Can you keep everything else stock and simply just do a 4.08 gear swap, rear axle will be completely fine no matter how many times you floor it from a dig? and what is this "micro polished" how much is it and what exactly does it do. Probably obvious, but just making sure. Thanks Don't own a Z, or any car as of now, but planning on getting one in March and I want this to be one of my first mods. Thanks again.

10-15-2013, 11:05 PM	#66 (permalink)
David Parra Guest Posts: n/a	I have 6MT would you have some kind of an idea of the install price at speacilty Z.

10-20-2013, 01:13 AM	#71 (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 did that for critical, if you get a 370z manual sport pumpkinyou can just bolt it to your car no extra parts required. Just make sure you get the pumpkin completely assembled with shafts in it. And don't get one from a g37 sedan different flange on those. blueranger and critical like this. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

10-21-2013, 11:08 PM	#73 (permalink)
blueranger Track Member Join Date: Aug 2012 Location: Albuquerque NM Posts: 577 Drives: 2010 Roadster 7AT Rep Power: 306	Is this the correct one? ImageUploadedByTapatalk1382414914.736443.jpg __________________ F.I. Stage 1 Twin Turbo #48 \| E85 FlexFuel \| Built 7AT \| F.I. 34 Row Oil Cooler \| F.I. Flex Plate \| F.I. 19 row Trans Cooler \| MT ET Street S/S \| ECUTEK Tuned by Seb \| RPM Roll Bar

10-22-2013, 12:00 AM	#74 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7250	that would work but it's a one tire fire __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

10-22-2013, 12:06 AM	#75 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7250	This is the correct Diff FINAL DRIVE ASSY - 370Z (Z34) 2009+ 3.7L V6 (B/SPORT+T/SPORT) 6-Spd M/T :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

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