Is there a difference between the 7AT on a Coupe vs a Roadster?

It may have a different pan or linkage parts if there are differences in the undercarriage due to the need to strengthen a roofless chassis.

Hey guys, just to add onto this thread I was wondering how everyones reliability has been with the stock AT. From reading the thread im getting that gear 1, 5,6, and 7 are pretty much off limits. I'll be using this as my daily driver so im just trying to get an idea at how fragile this transmission really is with the supercharger.

Car miles:
supercharger miles:
any issues:

supercharger really wont make enough power to worry about the tranny. from all I've seen just tanny cooler will do the trick for the SC

Don't forget about having UpRev increase the pressure in the tranny. But I think most NA AT guys do that too. I don't know all the details cuz I drive a real car with a clutch pedel:stirthepot:

yea sorry forgot that.

I have mine tuned NA like that as well. higher line pressure for faster & harder shifts.

so what I've gathered. Stock 7AT tranny can handle boost from the stillen supercharger. Will it be boosting in all gears or..?

Level 10 upgraded transmission makes it capable of handling up to 800hp so then a twin turbo set up wouldn't hurt.

Cost of the transmission is around 4K.
stillen supercharger is around 7k before install.
twin turbo kit is about 10k before install.

that 4k for the transmission is hefty as ****. Might as well trade in the 7at Z for a 6mt or do a tranny swap if you want boost.

Stillen supercharger gets around 400whp right? not much power for 7k.

I want to boost mine and I'm having that moment of "why did I get the 7at?"

then again... I don't track the car so Bolt on's and a tune would do fine for more spirited driving. Time to buy allllllllllllllll the bolt on's I can

My automatic Z has about 6,000 miles since the kit was installed. As far as the transmission, it seems to be holding up well with the new added HP. Not afraid to run through the gears, in fact have done as much as 153 MPH. :driving:

what HP/TQ are you at?

typically SC doesn't put down enough of either to hurt the AT as much as turbos.

You are correct sir that's exactly why I went with the Stillen supercharger kit, wanted reliability for the transmission more than anything. 426WHP 336TQ.

yea pretty much if you want boost but not dropping 4k in a tranny go with a SC kit. but then you also don't get the option to hit high HP numbers. it's all give and take to fit what each person wants.

I do believe people have quotes the stock 7AT to be able to handle 400wtq stock.

Yes, it is a give and take, but it is so much fun to watch a car with or around the same power level but in a stick shift. During the race go to shift into the next gear and during that moment of shift my Z jumps out forward! :driving: UpRev did a very good job with tuning the transmission, that is key to this kit there's almost two tunes, engine management and transmission once that is done properly the car will perform.

no boost but I still had my tranny tuned for better shifts so I know the feeling.....minus supercharger whine lol

:tiphat:

Automatic beats Stick any day. If you likes to shift then that is cool but don't knock the next man decision if he likes the AT.

What if the 7AT transmission wasn't not the weak point when trying to go the Force Induction Route.....At the end of the day I like my 7AT. Time to beef it up.

you must be new here if you think i'm talking ill about the 7AT lol

but you have a point that if the 7AT wasn't a weak point for higher HP (turbo build) then I would have went boost long time ago. but now we have level 10, fast intentions, and others making upgraded tranny's and parts to beef the whole system up.

it's a good time to be in the market for boost with a 7AT :tiphat:

Yes the stick shift is eventually going to go the way of the dodo bird. In 20 years a car with a stick transmission will be special order and only in certain cars. I grew up on a stick it but I more appreciate a quick paddle shift auto honestly. I can't decide whether to drop 20 grand on turbos and an upgraded AT or put 20 grand tour towards a used GTR. Granted a GTR will hold its value but insurance and other costs for the car can add up plus a modified and turboed 370z will be stock GTR on a roll. (if its done right) On the other hand a dual clutch transmission and all wheel drive is my dream.

Sent from my Nexus 6

my honest suggestion is take $20k as a down payment on a new GT-R. dealerships are selling them for $85K right now. much beter buy than a used one for 65-70K. unless it's a 2013. quickest 0-60 & 1/4 stock.

but i'm right there with you on the decision of 20K for TT and upgraded 7AT vs. other things.

Not new @ ALL. Nevertheless I commented and accidentally included your quote. I know you have an Automatic. After all I was one of the members with the GTM Twin SC's.

Next up More Boost --> Turbo.

I would hope you're not going with GTM for your turbos lol :bowrofl:

but in all seriousness give Tony at FI a call. their kit is amazing.

enjoy the boost sir :tiphat:

So then what was all this talk about avoidong gears 1, 5, 6, and 7 if you have a SC'd 7AT? Is it still a concern? Im not the type to run it on tracks or redline everyday but ofcourse i do enjoy taking it up a notch every now and then. Driving 22 miles down and back for work, I shouldnt need a tranny cooler would I? I know it wouldn't hurt but I like the motto of, If it ain't broke don't fix it. Lol

Tranny cooler is a must

@FPEnvy. GTM is the only Company to support the AWD Platform. To top that off I am definitely going to fcuk with Sam but I'm going to approach it at a different just like I have in the past.

One should never invest or make a down payment until the damm kit is in stock and is ready to be shipped ASAP.

And when you make the purchase utilized a Credit Card for Security Purpose. :driving:

I'm assuming you have a supercharger. The Z did not come from the factory forced induction, so by adding it you should take precaution and add a transmission cooler to help absorb some added stress from heat. Things get real hot real quick! :tiphat:

You have to always worry about the 7AT Transmission bro. It is just that SC comes on a lot smoother because it is Belt Driven (Linear).

The transmission will fail later down the road compared to the Turbo. The TQ is what cause the issue for our AT platform. The limitation for our Transmission regarding torque is 400.

To preserve the life of the Transmission (One should invest in an Intercooler, GTM VB upgrade or Level Ten VB Upgrade Plus increasing the Line pressure via Uprev Software.

Yeah, well Sam is never going to stock a X platform kit. And he's not going to complete one by the time you start a claim with your credit card... Lol

:icon18:

I am not hear to defend Sam. But don't chime in if you unaware of Sam and I business relationship. Like I stated, I was the 1st owner of the GTM twin SC kit and paid for my product and received it.

I don't know what CC's you've owned but I surely know that I've been able to submit claim's for an item that I haven't received if I have the Bill of sale for proof and countless emails and text to prove to my Lender what the business protocol involved including time frame!

That is all she wrote.

Aka Brooklyn

TERMS: Terms and conditions
This is a made to order kit lead time to have a kit ready to ship 8-12 weeks , once the order placed and the order is started there will be no cancellation the only cancellation that can occur for the order is if we don't ship the order after 12 weeks .

Note to recipient(s)
This is a made to order kit lead time to have a kit ready to ship 8-12 weeks , once the order placed and the order is started there will be no cancellation the only cancellation that can occur for the order is if we don't ship the order after 12 weeks .

Credit cards usually give you 120 days or something, that's all I'm saying

I am with It. Totally Understand where you are coming from. But sometimes you've to be willing to role the dices with you know who :stirthepot:

Moving forward Sam conveyed to me that the Kits have to be on the shelf before they can proceed with the customer orders. *The Business practice has changed according to the new Majority owners of GTM*

So, ive read throught multiple pages of this thread a few times

So pretty much, with a 7AT fully stock, can handle the stillen supercharger but not for long reliability?

Of course with the trans cooler, oil cooler, exhuast , tune... Trans is still bound to fail?

My thing is, when on the highway, im usually not in manual mode, and thats when i do most of the spirited driving... Overtaking cars and such... And it seems from reading gear 5-7 is the most dangerous where u cant push the car hard.... And i love stomping on the acceleration on the highway...

Just seems counter productive for me to go FI

I think you'll be okay with the stock SC kit since that's only around 300 wtrq.

I boost often up top with my S/C Auto, not afraid to go! The other night had a few pulls to a Buck 40 plus and one to 157 MPH and was still ready for more.:driving:

Picked up my car today from Fast Intentions and it feels absolutely amazing! The transmission works flawlessly. Now time to drive back to Texas!

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7at?

How long does it take to go 0-157?

Where would you ever be that you could figure that out. Texas Mile is all I can think of.

"Mexico"

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:roflpuke2:

So central Texas...gotcha:tup: