6MT with 3.53s?
 

Any of you 6 speed FI guys try switching to a 3.53 rear end? I really think it would make the car a lot more fun to drive on the street, and better for the track. If you have, I would love to here your input. I did a search and couldnt find anything.

I think Mr.Squeeze did. I'll have to check his build thread to be sure.

Here is the post from Mr.Squeeze.

http://www.the370z.com/forced-induct...ml#post2175330

He used gearing from an auto 350z, 3.3 final drive.

I talked with OS Giken last year at Sema and their reccomendation was to use the Auto final drive for our cars. I am more inclined with that idea or a custom Final drive for FI... I would love a 200mph+ final drive :D

Thanks man! :tiphat:

200mph would be fun however my goal is to get more usable power. I don't see why an auto guy wouldn't wanna trade straight up. Gonna make a post in the socal section.

Go with the 3.3 Final drive you will love it I have it in my car. After I put the 3.3 in my car it felt so much faster from the load. 350z guys have been doing it for year's. The 3.53 comes stock in all 350z's when any of those guys go for high whp turbo they switch to the 3.3.

You can use what i posted below as a reference it's all the final drives that we can use in our car's just look at the 7500 redline to get a idea for the 370z.

STOCK 3.357 Gear-- ECU REFLASH 3.357 ---HR Engine
6600 Rpm Redline --------7200 Rpm Redline----------7500 Rpm Redline

First------40mph ------First-----44mph-----------First-----46mph
Second ----66mph ------Second----71mph-----------Second----74mph
Third------94mph-------Third----102mph-----------Third----107mph
Forth-----120mph-------Forth----131mph-----------Forth----136mph
Fith------152mph-------Fith-----166mph-----------Fith-----173mph
Sixth-----192mph-------Sixth----209mph-----------Sixth----218mph

STOCK 3.538 Gear-- ECU REFLASH 3.538 ---HR Engine
6600 Rpm Redline -------7200 Rpm Redline-----------7500 Rpm Redline

First -----38mph ------First-----42mph-----------First-----43mph
Second ----62mph-------Second----68mph-----------Second----71mph
Third -----89mph-------Third ----97mph-----------Third----101mph
Forth ----114mph-------Forth----124mph-----------Forth----129mph
Fith -----144mph-------Fith-----158mph-----------Fith-----164mph
Sixth ----182mph-------Sixth----199mph-----------Sixth----207mph

No Reflash 3.7 Gear-- ECU REFLASH 3.7 ----HR Engine
6600 Rpm Redline ---------7200 Rpm Redline---------7500 Rpm Redline

First -----36mph-------First ----40mph-----------First-----41mph
Second ----59mph-------Second----65mph-----------Second----68mph
Third -----85mph-------Third ----93mph-----------Third-----97mph
Forth ----109mph-------Forth----119mph-----------Forth----124mph
Fith------138mph-------Fith-----151mph-----------Fith-----157mph
Sixth-----174mph-------Sixth----190mph-----------Sixth----198mph


No Reflash 3.9 Gear -- ECU REFLAH 3.9-----HR Engine
6600 Rpm Redline ----------7200 Rpm Redline-------7500 Rpm Redline

First ------35mph-------First ---38mph-----------First-----39mph
Second -----56mph-------Second---62mph-----------Second----64mph
Third ------81mph-------Third----88mph-----------Third-----92mph
Forth------103mph-------Forth---113mph-----------Forth----117mph
Fith-------131mph-------Fith----143mph-----------Fith-----149mph
Sixth------165mph-------Sixth---180mph-----------Sixth----188mph


No Reflash 4.083 Gear-- ECU REFLASH 4.083--HR Engine
6600 Rpm Redline ------------7200 Rpm Redline---------7500 Rpm Redline

First ------33mph--------First ---36mph----------First-----38mph
Second -----54mph--------Second---59mph----------Second----61mph
Third ------77mph--------Third ---84mph----------Third-----88mph
Forth ------99mph--------Forth---107mph----------Forth----112mph
Fith ------125mph--------Fith----137mph----------Fith-----142mph
Sixth -----158mph--------Sixth---172mph----------Sixth----179mph

Great info thank you. Is the 350 stock 3.3 a direct bolt in? I hope I will be able to hook 3rd at least after the swap!

Go to a junk yard grab one from any 350z/g35 should be easy to find from 03 and up.Just make sure it has LSD by turning the stub by hand the other one should spin in the same direction.

Or you could just get a open diff and put a good LSD in it. I am getting a spare to do the same.

Did you have any issues with cruise control or synchro rev when swapping to the 3.3? This is something I'd definitely like to do!

Rev match works without a problem cruise won't work in 6 gear I have to use 5 gear for it to engage I rarely use cruise.

Direct swap man fits like a glove very easy.

So just swap the whole pumpkin ?

Yes the pumpkin

:icon14:

Great thank you man. I will look for an open diff so I can swap my OSG into it