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**** 4.083 Gears/Final Drive Installed****

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Old 03-25-2011, 04:39 PM
  #741  
PolePosition
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Default Lighter flywheel combined with 4.083 gears

So from I gathered from earlier posts, there are no issues with running lightened flywheel (ACT Streetlite) with 4.083 gears. Anyone running that setup? Comments, drawbacks, stories of great wins or terrible defeats?
Old 03-25-2011, 05:41 PM
  #742  
ihellaheart350z
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No issues with lightweight flywheel. I'm running JWT clutch/flywheel combo with 4.08 gears and they work very well together.

Last edited by ihellaheart350z; 08-09-2011 at 10:04 AM.
Old 05-01-2011, 12:13 AM
  #743  
JDMStanced
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what is the part number on these gear/final drive?
Old 05-01-2011, 01:40 AM
  #744  
kingpin.andy
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Originally Posted by JDMStanced
what is the part number on these gear/final drive?
Don't have a part #, but it's out of a Nissan Frontier King Cab truck, so that should help you find it. Just google Nissan truck 4.08, or you can find it at pretty much any nissan mod vendor site. Should cost 450ish.
Old 05-01-2011, 02:01 AM
  #745  
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Can it be purchased from a Junkyard for cheaper?
Old 05-01-2011, 04:33 AM
  #746  
kingpin.andy
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Originally Posted by JDMStanced
Can it be purchased from a Junkyard for cheaper?
I'm sure it could. Don't see why not as it's a stock part for those trucks. Just make sure you're pulling it out of the correct model Frontier. I can't remember which one it's out of off the top of my head, but you can google it to find out for sure.

Last edited by kingpin.andy; 05-01-2011 at 04:34 AM.
Old 05-01-2011, 07:58 PM
  #747  
JDMStanced
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2005-2007 King Cab M/T 2.5 Final Drive model: C200

http://www.vibratesoftware.com/html_...rive_axles.htm
Old 05-08-2011, 10:56 AM
  #748  
ian99rt
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Originally Posted by JDMStanced
Can it be purchased from a Junkyard for cheaper?
Definately cheaper out of a Junkyard, I snagged mine for $270 shipped. Great condition and came out of a 30k miles 2005 Frontier King Cab.

Finally setting the gears and quaife diff up this week.

Will have a fully detailed DIY written up once its all done and installed.
Old 05-08-2011, 01:06 PM
  #749  
JDMStanced
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Originally Posted by ian99rt
Definately cheaper out of a Junkyard, I snagged mine for $270 shipped. Great condition and came out of a 30k miles 2005 Frontier King Cab.

Finally setting the gears and quaife diff up this week.

Will have a fully detailed DIY written up once its all done and installed.
hit me up where you got it shipped from
Old 05-08-2011, 01:53 PM
  #750  
ian99rt
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Default 4.08 gears

I found mine by looking through car-part.com

It is a network of auto salvage yards where they can list the parts, condition, and price.

There was a place in Southern Washington that had a whole rear axle for about $300, but they would not take it apart to ship.

I got lucky found a place in AZ that had the rear axle messed up but they pulled the gears and diff out. Was sitting on their shelf for a year or so wrapped in plastic when i called.

Search around for yard listing other rear axle parts and call them. Thats how I found mine.
Old 06-23-2011, 03:47 PM
  #751  
nismomike
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sorry to bring up an old thread, but just wanted to ask one simple question, and want one simple answer! I have an 08 Z, ecu tuned, top speed governor turned off. If the 4.083 gears are installed, could I--theoretically, utilize 6th gear to keep going past the 5th gear limit of 140ish something miles an hour that the 4.083 would bring? To go 160+? Just wondering!
Old 06-24-2011, 01:14 PM
  #752  
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I have the 4.08 gears with the factory tune and have hit 160, no more.
Old 06-26-2011, 02:11 PM
  #753  
zeyn83
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Default 3.91 vs 4.08

I also have a 08 HR with rev limit increased by 500rpm. I guess the top speed depends on the tire size as well. I have 275/35/19 tires in rear which is I believe close to 27" slick. I'm trying to decide between the 3.91 and 4.08 gears. I rarely go up to 160 but I do once in a while and I don't want to cut it down at all. Which one would you guys go with considering my setup?

I drive about 70 miles/day on highway and that is another reason why I was afraid 4.08 might be overkill.

I also have the Touring model so I assume I don't need an aftermarket LSD right?

Thank you guys for your help and time!
Old 06-27-2011, 12:20 PM
  #754  
doshoru
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It'll be a difference of ~145 rpms or so at 80mph in 6th between the 3.91's and 4.08's. Not worth worrying over.
Old 06-27-2011, 05:33 PM
  #755  
jmccarty
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Originally Posted by nismomike
sorry to bring up an old thread, but just wanted to ask one simple question, and want one simple answer! I have an 08 Z, ecu tuned, top speed governor turned off. If the 4.083 gears are installed, could I--theoretically, utilize 6th gear to keep going past the 5th gear limit of 140ish something miles an hour that the 4.083 would bring? To go 160+? Just wondering!
Look back on page 34 of this thread. You can theoretically hit 212mph with this final drive if you can rev to 8,600rpm with the tire size I'm using. There is a spreadsheet posted on page 34 of this thread that will answer for whatever combo you have.

Last edited by jmccarty; 06-27-2011 at 05:39 PM.
Old 07-01-2011, 12:31 PM
  #756  
CTZ860
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Hey all, was wondering if I go 4.08 gears and I want to get all new bearings and gaskets should I be getting them for the frontier as well or the OEM ones for the Z diff?
Old 07-06-2011, 01:26 PM
  #757  
Steve-O Z33
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Originally Posted by CTZ860
Hey all, was wondering if I go 4.08 gears and I want to get all new bearings and gaskets should I be getting them for the frontier as well or the OEM ones for the Z diff?
The OEM stuff for the Z is what you'll need. You still have a 350Z differential, just a Frontier ring and pinion. Here is a parts list: http://mynismo.com/products/?id=5365

My diff. is in the shop now being built. Can't wait to get it back!
Old 07-12-2011, 06:27 AM
  #758  
etownz33
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Very soon I will be swapping back to stock gearing if anyone is looking for a set of 4.08's. They were fun for a while but now that fi im sick of shifting every 2-3 sec. For N/a they are awesome and for the 1/4 they are good for et's if you can hook up, but for everyday cruising/ hiway not overly impressed
Old 07-12-2011, 08:21 AM
  #759  
1sick350z
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Originally Posted by etownz33
Very soon I will be swapping back to stock gearing if anyone is looking for a set of 4.08's. They were fun for a while but now that fi im sick of shifting every 2-3 sec. For N/a they are awesome and for the 1/4 they are good for et's if you can hook up, but for everyday cruising/ hiway not overly impressed
I will consider taking them from you when the time comes. Just let me know
Old 07-12-2011, 09:17 PM
  #760  
etownz33
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Originally Posted by 1sick350z
I will consider taking them from you when the time comes. Just let me know
Sounds good


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