Nissan 370Z Forum

Nissan 370Z Forum (http://www.the370z.com/)
-   Engine & Drivetrain (http://www.the370z.com/engine-drivetrain/)
-   -   VHR + FD Gear Ratio upgrades - 3.9 and 4.08 (http://www.the370z.com/engine-drivetrain/3658-vhr-fd-gear-ratio-upgrades-3-9-4-08-a.html)

Z1Performance 02-06-2010 02:07 PM

I don't know the why's, all I know is that it will not work

magisky 02-07-2010 01:57 AM

but we did verify it does not kill cruise on manuals?

DanMardik 03-23-2010 06:52 PM

So did anyone get this done? I'm anxiously waiting for a review on this so that I can proceed with my Final gear project!!

Dan

DannyGT 03-23-2010 07:12 PM

I have another question, is this something that benefits all applications or just more so NA? When I get the GTM SC in the mail, should I want to do this upgrade? Will it compliment the SC? This sounds great!

jnaut 04-14-2010 11:29 AM

what is the exact year/make/model/trans gear sets fits into 370 manual axle? whats geas ratior are avaible..confimed! only nissan parts.

StealthZ 04-14-2010 04:51 PM

gears are available in stock configuration, 3.9, and 4.08. Nissan makes them, some JDM companies sell them too but more pricey. Z1auto sells all the combos out there and they know them very well(not saying any other of our companies here don't). Just that I worked with them when I had my vq35HR 350z and the FD gearing changes things up a lot.

jnaut 04-14-2010 05:24 PM

i am just curious exactly which one from nissan fits my car as i can get nissan gear set for about 200$ less then z1 sells them for. i hear that an 06 frontier se with 2.5l manual is 4.08 ratio, but i dont know if it fits the 370...can anyone confirm this?

chuckd05 04-15-2010 01:15 PM

Is it a known fact that the diffs are the same from the HR Z's ? Same Pumpkin as well ?

so if I got a VLSD out of a 07-08 HR I could swap that pumpkin into mine with no additional parts needed ?

StealthZ 04-15-2010 04:22 PM

don't you already have a VLSD? To my knowledge it is possible, may need some small parts, but I believe pumpkins are the same

jnaut 04-16-2010 07:16 AM

i already have vsld.just want to do a gear swap.

cullmann 04-18-2010 06:27 AM

I had the 370Z 7A/T with VLSD.
Let me know the way to get the mechanical LSD with 4.08 F/D for my 370Z auto.

Z1Performance 04-19-2010 02:29 PM

Quote:

Originally Posted by cullmann (Post 501402)
I had the 370Z 7A/T with VLSD.
Let me know the way to get the mechanical LSD with 4.08 F/D for my 370Z auto.

you would need to change your differential as well as the ring and pinion - there are also some installation parts that will be needed as well

Ivoidwarranty 04-26-2010 11:25 PM

Not looking good for the the Autos if you want to keep cruise control. This is a blurb from the cruise control section dealing with the ICC, I'm still looking for a section seperate from the ICC but I'm willing to bet it uses the same logic. It's from a section talking about trouble shooting and what might cause the cruise control not to work.



If the vehicle speed signal (wheel speed) from the
ABS actuator and electric unit (control unit) and
the A/T vehicle speed sensor signal (output shaft
revolution signal) from TCM, received by the ICC
sensor integrated unit with CAN communication,
are inconsistent.



I'm pretty sure it's saying that the computer takes three different inputs from the CAN bus and reads them. The computer tables are set up for the stock rear gear and after you change the gears the driveshaft speed and the rear wheel speed do not match in the tables anymore and cause it to fail safe (OFF).

CBRich 05-10-2010 12:12 PM

So Z1 I have a question for you. For me to swap my M6 with no LSD to the 4.08 I would need . . .

And to add an OS Giken LSD I would need . . .

Z1Performance 05-11-2010 07:04 AM

Quote:

Originally Posted by CBRich (Post 531693)
So Z1 I have a question for you. For me to swap my M6 with no LSD to the 4.08 I would need . . . .

the final drive, and installation parts

And to add an OS Giken LSD I would need . . .[/QUOTE]

nothing assuming you have the install parts mentioned above


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