Here is what i think i know.
The 350Z's final drive model is R200V or R200?.....Final Drive Ratio is 3.538 to 1 for 6/MT and 3.357 to 1 for the 5/AT.

1997-1998 240SX's have final drive model R200V with a 4.083 to 1 Final Drive Ratio.

Non Turbo 300ZX's have final drive model RS00V with a 4.083 to 1 Final Drive Ratio.

1995-1996 J30's have final drive model RS00V with a 3.916 to 1 Final Drive Ratio.

http://www.nissanperformancemag.com/...y03/ask_sarah/


Final Drive Model for 350Z and 240SX listed

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


http://www.cautioncreativity.com/briand/lsd.htm

Are swaps possible? Im a noob, but those fast domestic owners are always talking about gears!

 

I swapped my 5AT final for the 6MT final back in April down at Z1 Motorsports. AFAIK, I am the only such swap to this point. And yes, it has given me back some low end grunt at the expense of 1-2 mpg loss. No big deal. I p/u between 2 and 4 tenths (hard to average with wx changes) in the 1/4 and that IS a big deal! A worthwhile swap.
I do wish I knew if the gears from the 97-98 would fit. Now there's a good swap if you like to run the 1/4 more than cruise the interstate!
Thanks for the info and I am going to ck. out the possibility of the even lower gears from the 97-98. If you hear of the possibility of a match, please post. Thx, Jim

 

Is there anyway to counter the lost MPG? For instance the 5/AT 350Z has a 5th gear (OD) of .834:1

The 6/MT has a 6th gear (od) of .794:1

An LS1 Camaro/Vette/Firebird has a 6th gear of .50:1 which allows the engine to cruise at 1750 RPM's and achieve around 30 MPG's in 6th gear

Can we change the 5th gear ratio for the 5/AT or the 6th for the 6/MT?

 

Looks like the JDM 180SX (S13) also used a R200V "final drive model"...It's the 180SX with the CA18DET engine.

That 180SX (S13) has a Final Drive Ratio of 4.363:1

The RS13 (180SX) also has a Final Drive Ratio of 4.363:1 but has taller gears throughout.

http://www.asahi-net.or.jp/~dy7n-itbs/silvia_data.htm

There has got to be more to it than just finding nissan cars that also used the final drive model R200V right?

My fantasy gear setup
1st 3.50:1
2nd 2.35:1
3rd 1.55:1
4th 1.05:1
5th 0.55:1

Final Drive 4.363:1

 

I've also been looking at swapping the final drive ratio. I'm moving up to 20" rims in the back, and I could definately use a 4.x:1 to counter act the lost time as much as possible. I woudl be happy if I could break even and get around the same accel w/ 20" as I was with my 17"s. I took a look at some of your links:

R200 MT 3.538
R200V MT 3.357
R200V AT 3.357

I know the base model (which I have) has the final drive ratio of 3.538:1. I take it the trailing "V" means for cars that have the viscious LSD right? In which case they do have the lower final drive ratios.

I think the re-gearing of all gears would be a bit more $$$ as someone would have to crack the tranny and replace the gearing. I'm thinking about going to a few tranny shops around here ot see if it will be possible to swap out the final drive with something around 4:1 to 4.5:1. Anyone else here in the forum done something like this yet? Any ideas?

--Justin

 

So a base model should have the R200

 

I thought all 350Z's came with VLSD's?

http://www.autoweb.com.au/start_/sho...wsarticle.html

the R200V with 3.357 is for the 5/AT
The R200V with the 3.538 is for the 6/MT

The the 180SX has an R200V with a 4.3x final drive

 

All but the base come w/VLSD. Regards, Jim

 

Jim, who did you you talk to at Z1 for changing your ratios?

 

Talk to Russell who is the owner and a very personable guy to deal with. Regards, Jim

 

Ok so no re-gearing all the gears...All i really want re-geared is my OverDrive a.k.a. 5th gear in the 5/AT.

And a Final Drive Ratio of 3.9x - 4.3x:1