I have a question if any one know if the pathfinder 3.1 final drive gears or pumpkin will fit / bolt on 350z

This winter am going to retune my car for high hp , will be shooting for 800+whp on c16 or 109 oct fuel

As of now my car makes 609whp on 91 of with 3.3 fd , super fun to drive the gears useable.

Why am asking because I know some would say 3.3 is fine and its , it's about exploring new places for the community.

Also one of my friends her own a 350z with sp racing tt making 880whp with 3.3fd he says at this level it feels like 600+ whp 350z with 3.5fd you go through gears super fast

 

Assuming same torque curve and same gear, a 3.3 FD, 880 whp will be much faster than a 3.5 FD, 600 whp car. The ratios are not that different to account for such a huge differential in hp.

I don't think you will like a 3.1 final drive but it would be an interesting experiment. I would just find a pumpkin and take it to a shop to have custom axles made if the stockers don't fit.

 

This is the speeds i came up with, with.a 7300 redline

 

This is pathfinder 2007 pumpkin, 3.14 final drive .

Am afraid that the suv came with different fd ratio ? Dose any one know for sure if its comes only with 3.1 FD.

The pumpkin look very similar almost identical to 350z

 

Is there's any way I can know for sure what size fd it's maybe by vin number ?

 

Have to spin it, if im not mistaken or open it and count the teeth.

 

i found new info maybe a drop-in for 350z. i comes from 2016 infinityQ50 (turbo engine 3.0 v6) there FD is also 3.1, there are few pic of the pumpkin came across on the internet.

also the 4 cylinder turbo of Q50 2.0t have 2.94 FD not sure of the size though.

 

difference between 3.5 FD , 3.3 , 3.1 @7500 rpm for 350z manual

 

i know what do you mean, i was thinking of doing it and still am but spending almost 500$ to find out if the FD/gears will work/fit or not is something holding me back

 

from those pics they would not be a direct pumpkin drop in as the rear bolt is in a different place. MAYBE the gears would fit but you would probably have to just jump in and buy it to find out.

 

The thing is that all of the Q50 models come with open diff.

 

Regarding Pathfinders:

The diffs in the V8 are M205/R230. Both 2WD and 4WD use 2.937 gears.

The diffs in the V6 are the same R180a/R200 as before. 2WD's have 3.133 gears while 4WD's have 3.357 gears.

This is per the 2008 Nissan factory manuals.

The R200 has the best chance of internal gear/pinion being correct diameters to allow for using in the 350Z diff. There will not be a reference online to know without buying one and opening it up.

The Q50 unit is too small.

Rear differentials are based on torque ranges for design.