7AT Faster 0-60 and 1/4 mile than 6 MT??

shadoquad · 11-19-2010, 09:09 AM

Quote:

Originally Posted by Xan

If I'm not mistaking, the last time Ferrari had an automatic, torque-converter transmission like those found in the 370Z was the 456 GTA that ceased production seven years ago...
You can't compare a Ferrari transmission with an 370Z's AT

I was talking about AT's in general, br0. Just saying that the tech exists to make them faster than manual. Tha's all.

Jordo! · 11-19-2010, 04:45 PM

Quote:

Originally Posted by m4a1mustang

It's not a dual clutch. It's a typical slush-box with a torque converter.

Not exactly. It also has full lock up for a solid connection in 2-7 gear, which means significantly better power transfer. That's why the two trans put down about the same numbers on the dyno.

Traditonal slush boxes are just that -- they only allow fluid coupling (or only have lock up in the tallest gear).

Moroever, if memory serves, Nissan tuned it to accomplish gear changes in < .5 sec under load.

ImportConvert · 11-19-2010, 07:03 PM

Quote:

Originally Posted by Jordo!

Not exactly. It also has full lock up for a solid connection in 2-7 gear, which means significantly better power transfer. That's why the two trans put down about the same numbers on the dyno.

Traditonal slush boxes are just that -- they only allow fluid coupling (or only have lock up in the tallest gear).

Moroever, if memory serves, Nissan tuned it to accomplish gear changes in < .5 sec under load.

Lol, Ford, GM, and everyone else had that in the mid/early 90's. In the crown-vic, mustang, etc. It's nothing new.

Slushbox.

Jordo! · 11-20-2010, 09:03 PM

Quote:

Originally Posted by ImportConvert

Lol, Ford, GM, and everyone else had that in the mid/early 90's. In the crown-vic, mustang, etc. It's nothing new.

Slushbox.

Lock up in every gear after 1st? News to me, but okay.

Lemers · 11-20-2010, 09:06 PM

If I wanted to have the feel of driving my car taken away I'll play forza motorsports.

jnaut · 11-20-2010, 10:43 PM

Quote:

Originally Posted by Jordo!

Lock up in every gear after 1st? News to me, but okay.

yes, usually its lock-up in high gear only on typical american cars.

wilsonp · 11-21-2010, 12:48 AM

Not only that, but the 7AT lock up begins at 15MPH which is considerably lower than most, and has lock up at all throttle positions, not just WOT.

NYBladeZ · 11-22-2010, 01:46 AM

The biggest issue I have with the current 7ATs is that they are fragile when compared to the m6. Forced induction for the vq37 has made leaps in the past year. Soon it will be safer, easier to install, godwilling tuning will advance, and it might even get cheaper. However all you AT guys will have to spend the extra money on valve body upgrades and torque converters. I personally know of one G transmission that bit it with a tt and shumby's transmission just went as well. So sure you can make all the 7AT arguments you want but when it comes down to it the m6 is more durable in the hands of a smart driver and more able to withstand the tq increases we're all chasing.

11-20-2010, 09:06 PM	#35 (permalink)
Lemers A True Z Fanatic Join Date: Mar 2010 Location: Izmir, Turkey Posts: 15,371 Drives: 2012 Traverse LTZ Rep Power: 52	If I wanted to have the feel of driving my car taken away I'll play forza motorsports. __________________ 2010 Black Cherry Touring/Sport/Nav Now - 2012 Travese LTZ until I leave for Turkey

11-21-2010, 12:48 AM	#37 (permalink)
wilsonp A True Z Fanatic Join Date: Jul 2010 Location: Virginia Posts: 1,134 Drives: 2009 Touring Sp Nav Rep Power: 17	Not only that, but the 7AT lock up begins at 15MPH which is considerably lower than most, and has lock up at all throttle positions, not just WOT. __________________ 2014 Cayman S PDK Sport Chrono White/Black Was 2009 370Z Touring Sport+Nav 7AT Metallic Black/Persimmon Was 1991 NSX Auto Black/Black

11-22-2010, 01:46 AM	#38 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 20	The biggest issue I have with the current 7ATs is that they are fragile when compared to the m6. Forced induction for the vq37 has made leaps in the past year. Soon it will be safer, easier to install, godwilling tuning will advance, and it might even get cheaper. However all you AT guys will have to spend the extra money on valve body upgrades and torque converters. I personally know of one G transmission that bit it with a tt and shumby's transmission just went as well. So sure you can make all the 7AT arguments you want but when it comes down to it the m6 is more durable in the hands of a smart driver and more able to withstand the tq increases we're all chasing. __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

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