Yes the 4.08 were a drastic change for the better. They are very driveable and multiply torque in every gear. With bolt ons/tune, an upgraded clutch/flywheel and meatier tires, the 4.083 gears put the g into a totally different catagory. I am able to run with and beat much more powerful cars like modded e46 m3's, sti's, srt8's, and s5's. No regrets.

 

I want a 4.08 now, where did you buy yours?

 

craigslist actually, lol..they are an oem nissan ring and pinion from a Frontier. Some of the vendors here carry them I belive, but here are some other places that carry them.
http://www.mynismo.com/products/?id=6135
http://www.350zmotorsports.com/nissa...ive-gears.html
http://www.gtmotorsports.com/home.php?cat=437

 

How much did your mileage suffer?

 

Expensive! Could I use a Frontier pumpkin if I find one cheaper?

 

Says who?

http://www.g35club.org/coupe-specs.shtml

http://www.vehix.com/inventory/Vehic...5F00000000545E

http://www.infinitiofwestchester.com...e-4577812.html <----------Click "specifications"

 

I was talking OEM. That should have been obvious.

 

the thread topic is not strictly OEM... and several of us have posted mph/rmp that is not based on what you posted...

So what you may think is obvious, does read that way in the big picture of the thread's purpose.

 

expensive?

its actually one of the better mods for the price... FD is one of the more noticeable mods I've done... you can spend much more (very easily) on other bolt-ons that wont have nearly as notable gains.

Pumpkin swaps are always a cheaper alternative - but you arent going to get a Frontier pumpkin to bolt up to your rear-end... AT swapping MT is a good choice... but for MT you're pretty much stuck with installing ring & pinion

 

^So you've changed your FD as well as a reflash right? Did the reflash address the cruise problem?

 

I never had a cc problem... but even for those that have, TS and Osiris do not address that....

 

^ So you went from a 3.3 to a 3.7 right? And your speedometer is still right and your cruise still works?
I'm thinking about going to the 3.5 LSD from the Z (friend with a Z is upgrading his) but I want to keep my cruise, I use it a lot.

 

I hear ya, I was thinking about buying a Frontier rear dif to disassemble. Would that be possible?

 

If you want CC at speeds at over ~73mph, then don't swap in the 3.5 gears. Do a quick search and you'll dig up numerous cases of 03/04 cars loosing CC above 73mph when going with the 3.5 gears or lower. The 04.5 cars might not have a problem, but the 03/04 cars do.

 

On page one, there is a lot of confusion regarding OEM FDs. Per Post #17:

I posted up the info to clear this confusion regarding OEM FDs. That was obvious to everyone except yourself. No crap rpms will be different if you've got a non-OEM spec FD. Next time, I'll make it a point to very clear for the automotive noobs like yourself that need a lot of hand holding to get caught up on this stuff