VHR + FD Gear Ratio upgrades - 3.9 and 4.08

KLRCADI

Price depends.

4.08's are a nissan part ( ring gear from a nissan frontier ) +/- $400
3.9's are aftermarket ( Central 20 ) +/- $600

Install requires a few OEM parts (Pinion bolt, crush sleeve, some seals,etc)

All in, installed probably about a grand. Considering it's less then some exhausts, it's a no brainer to me.

And yes, this is the same R200 diff in the 350z, G35, G37 ( and about a dozen other Nissan cars/Trucks)

Pete

Unicorn_blood

Pete, I got a 350Z with 4.08s on it... so if I had a 370Z, I could take it to a shop and swap pumpkins?

This sounds like good news to me. My next question like the OP has asked...

How does changing to a lighter flywheel (like JWT) affect Synchro Rev Match shifting? Will it over compensate the rev? Or will it rev match instantly?

javol

At mynismo.com i found this item:

4.083 Ring And Pinion - Z33 (part nº 38100-0C760)

Asking them if it fits 370Z the answer that it's NOT.

According to them 350Z use a R205 DIFF...

Heeeelpppp!!!!!

javol

Exactly the same R200 diff?

Here we go with the two OEM Nissan figure:

350Z




370Z



From the images and parts numbers, we can see that 370Z diff comes with 4 satellites..... 350Z with only 2 satellites...

The other components seem to be "more or less" the same...

Any of you can give a reliable tech opinion?

Bye,