Forced Induction & 7AT 370z Info

blueranger

Dreamer which system runs cooler and is less finicky from your experience and or feedback?

Also Is it best to manually shift when wanting to boost so that you can make sure you only boost in 1-4th and stay away from 5-6-7 ?

What are your boost & shifting practices?

I know sometimes it seems like us AT7 owners really want to make this transmission work with a FI setup but I really do enjoy this Auto more than even my previous Manual tranny twin turbo 996.

theDreamer

I should preface some of my posts with I actually don't own the 7AT, I have had the chance to stumble upon certain reading material which I have shared & driven a built block TT 370z with 7AT.
Running cooler between a SC/TT will be the SC just because you are not trapping heat around the block to turn the turbine to create power, but remember a TT (or T) is going to be more efficient.

When I drove the TT I always did manual mode just because it was easier for me to correlate the boost v rpm v gear and make sure I was driving right, but that is just my brain which has driven manual only transmission (unless it is a rental car). I think without a VB upgrade staying out of boost in the top few gears is wise just because of the strain it will put on them and cause early failure. Plus redline in 4th is easily in the mid 100 speed so that is probably pushing what most need.

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theDreamer

Mike, adding a link to your PDF article.

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theDreamer

Also have added the OEM transmission cost & part number for reference.
Nissan:

7 Speed Automatic Transmission (310C0-Z34002) - $7,368.38

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FPenvy

sooooo you're saying go blow the tranny then instead of OEM pay $7k for GTM stage4?

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theDreamer

That might get a bit expensive by the 3rd or 4th transmission.

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FPenvy

haha i really just wanna see GTM put one of theirs to the test and find out the capabilities. then we can justify if it's worth the money.

if they have already i have yet to see details.

i know that one guy put one in his car but is N/A at the moment so that shows nothing important.

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theDreamer

They do have this car with the transmission upgrade: Link

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FPenvy

yea i've seen that but still he never jumped into the higher gears and got on it. all i wanna know is if you can do what you cant do with this upgraded transmission. from what i understand is that you cant get on boost in the higher gears without issues.

also i want to know how much this transmission can hold. you'd think GTM would test the upper limits so they can let customers know.

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Z eliminator

i have one in my N/A car with 4.08 gears/
it shifts really hard and fast .
it was really quick at the drag strip ( bone crunching shifts at 7800 to 8000 rpm).
car ran slower but the 1/8 and trap speed where very high.
problem is that the uprev *car not tuned * closed the throttle body's on me when it shifted. and it stalled coming of the line. car ran way to rich.
the 4 to 5 shift is night and day different.
my stage 2 Sc will be going on soon.

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J_Z

430 hp 360 torque roadster.
gtm sc build

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theDreamer

Any other upgrades to your transmission or engine?
Tranny cooler, oil cooler, VB upgrade, etc?

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DarkJak

Do you guys think I'd have any issues running around 380-400 WHP for a few weeks before getting a trans cooler and valve body upgrade? By running, I mean driving hard.

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elperuano

In the higher gears probably...

DarkJak

What about 1-4?

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09 7AT|MCS 2WNR|Topgunz Rotrex|Ecutek (Eugene)|Maxxis RC1|Titan-7 TS-5|OSG LSD|Rear Mount Derale Oil Cooler (WIP)+25 Trans Cooler|Fismo|G-LOC R12/R10|Zeta III L|NLR Wing and Splitter|CJM Pan and Fuel Hat|Radium Surge Tank|AP Racing CP9668