6MT with 3.53s?

esfourteen

I run the 3.53 with a Quaife ATB LSD, cruise and SRM work perfect (about 100rpm off). I'd agree that over 500whp the 3.3 FD is probably best, but the SRM will be ~300-400rpm off (same as going to 4.08) and as Squeeze mentioned, cruise won't work.

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Build Thread | GTM TT Install Thread | Engine Build Thread

Nixlimited

Why does cruise not work? Is it because of the speed/rpm mismatch? I would think the computer would just hold a speed.

Esforteen - where did you get your setup and would you recommend it?

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Car Sold! Pleasure being a part of the Z community.
New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)

esfourteen

I put it together myself: used 350z open diff, quaife ATB LSD for an open diff, new bearings, seals, and shims from nissan. It took about 4 hours to put it together and properly shim the diff, if you're mechanically inclined It's a fun project. I love this setup, but going for 600whp I could probably use more gear lol.

As for the cruise control with the 3.3, I believe the issue is related to the RPM's being off since Squeeze mentioned cruise works in 5th gear for him.

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Mr.Squeeze

My rear diff came from a 06 G35 automatic, you can use a G35/350 doesn't matter as long as its from a auto. The automatic cars are the only ones that come with a 3.3 final drive. This is a direct swap you take out your diff and swap in the other one.






I think it has to do with the speed being off for cruise to work in 6 gear.


If you have a OSG LSD already and it's for a manual car it wont work in the automatic diff. The pumpkin housing are the same it's the internals that are different ring and pinion.

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Driven Motorsports Single Turbo 7675 T4 1.32 A/R 995WHP 780TQ

Zat_Zuma

From my experience and going from a 3.7, 4.08 and 3.9 ratios(why you ask? ..long story) that if your concerned about the few extra RPM needed for a downshift....... blip the throttle after Rev match has done it's thing.

Phunk: the stock LSD is a piece of crap. I use a Cusco RS 1.5 80% and when it locks it locks well. But it is noisy on low speed turns and likes to clunk at low speeds.
Beware though, as it will snap rear axles with drag radials.

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[B]2009 & 2017 370Z Touring Sport Autos SOLD

TerribleONE

I want to do this but I cant see my OSG lsd fitting in the new pumpkin..

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Mr.Squeeze

If anyone wants a rear diff I spoke to my friend that works at the junk yard where I got my from and you could order one and have it shipped.

PM me for details in your interested .

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Driven Motorsports Single Turbo 7675 T4 1.32 A/R 995WHP 780TQ

TerribleONE

I wanna take you up on this so bad. But have no desire to try and sell this LSD and find another one..

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Nixlimited

Yeah. I think 3.3 is going to be too low for me. I do use cruise in 6th. I'm lazy on road trips!

__________________
Car Sold! Pleasure being a part of the Z community.
New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)

Mr.Squeeze

You can always keep your LSD and get 3.53 diff it will fit that.





I can see this being a problem ,but I wouldn't really switch to the 3.3 on stock block unless I was pushing at least 525whp. I think anything lower than that its a waste my low boost spring pressure is 600whp I need it .

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Driven Motorsports Single Turbo 7675 T4 1.32 A/R 995WHP 780TQ

Nixlimited

That's a good point. For Phase I, I am only shooting for 500 WHP. Where would one get a 3.53 gearset? Does anyone make a plug-n-play diff for the Z with different ratios?

__________________
Car Sold! Pleasure being a part of the Z community.
New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)