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?

 

No issues with lightweight flywheel. I'm running JWT clutch/flywheel combo with 4.08 gears and they work very well together.

 

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.

 

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.

 

2005-2007 King Cab M/T 2.5 Final Drive model: C200

http://www.vibratesoftware.com/html_...rive_axles.htm

 

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

 

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.

 

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!

 

I have the 4.08 gears with the factory tune and have hit 160, no more.

 

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!

 

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.

 

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.

 

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!

 

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

 

Sounds good