7AT, 7th gear: Cruising or Top Speed?

EndyKwon · 01-29-2013, 03:21 PM

Couldn't find anything in the search function, so slay me if this did exist!

But yeah, just wondering if the 7th gear is used for cruising or top speed. My commute on the freeway averages around 70~80mph and I noticed that even on 7th gear, the RPMs lick 3K. Constant 3000 RPM seems a bit high for cruising in my opinion.

DEpointfive0 · 01-29-2013, 03:24 PM

Quote:

Originally Posted by EndyKwon

Couldn't find anything in the search function, so slay me if this did exist!

But yeah, just wondering if the 7th gear is used for cruising or top speed. My commute on the freeway averages around 70~80mph and I noticed that even on 7th gear, the RPMs lick 3K. Constant 3000 RPM seems a bit high for cruising in my opinion.

Yeahhhhhh... But that's just the way it is... The AT hits top speed of 155 in 5th gear

EndyKwon · 01-29-2013, 03:29 PM

Quote:

Originally Posted by DEpointfive0

Yeahhhhhh... But that's just the way it is... The AT hits top speed of 155 in 5th gear

Wow, then this 7th gear is pretty silly. >_>

jpritche · 01-29-2013, 03:32 PM

Surprisingly, I get better gas mileage not using 7th. The interstate I commute on daily is very hilly which causes you to basically floor it to maintain speed going up a semi-steep hill at 80mph. I find that if I stay in 5th I end up getting better MPG. YMMV.

Also, the FI exhaust in 7th up a big hill is fairly annoying on the inside

Note: On normal roads, I get better gas mileage using 7th. On the hilly interstate is the only place it is worse.

DEpointfive0 · 01-29-2013, 03:33 PM

Quote:

Originally Posted by EndyKwon

Wow, then this 7th gear is pretty silly. >_>

It's because of 7th we get better gas mileage than MTs... Because 7th can be engaged at 42-43MPH

luigi90210 · 01-29-2013, 04:46 PM

Quote:

Originally Posted by EndyKwon

Couldn't find anything in the search function, so slay me if this did exist!

But yeah, just wondering if the 7th gear is used for cruising or top speed. My commute on the freeway averages around 70~80mph and I noticed that even on 7th gear, the RPMs lick 3K. Constant 3000 RPM seems a bit high for cruising in my opinion.

i can tell you that i can hit 155 in 5th on my MT

6th on MT and 7th on AT is really just overdrive, so its for gas savings

isayimandrew · 01-29-2013, 07:11 PM

Quote:

Originally Posted by luigi90210

i can tell you that i can hit 155 in 5th on my MT

6th on MT and 7th on AT is really just overdrive, so its for gas savings

thats what i was gonna respond with. the last gear for a 6MT or 7AT is an overdrive gear for gas purposes. You could technically go without using those gears and still be fine.

Jordo! · 01-29-2013, 08:20 PM

Overdrive to improve economy and allow for better spacing of other 6 gears.

I only use it for highway cruising over 70 or 80 MPH.

DarkJak · 01-30-2013, 03:09 AM

5th on the 7AT and 6MT are 1.0 ratio, so 6th and 7th are technically both overdrive. Ever notice how the car shifts into 5th automatically if you switch into manual mode after cruising in auto? 6/7 aren't meant for acceleration, purely for fuel economy.

Nailzs · 01-30-2013, 06:27 AM

I see about 2400 RPM in 7th gear at 70 MPH.

CDepp · 01-30-2013, 08:15 AM

Quote:

Originally Posted by luigi90210

i can tell you that i can hit 155 in 5th on my MT

6th on MT and 7th on AT is really just overdrive, so its for gas savings

Quote:

Originally Posted by DarkJak

5th on the 7AT and 6MT are 1.0 ratio, so 6th and 7th are technically both overdrive. Ever notice how the car shifts into 5th automatically if you switch into manual mode after cruising in auto? 6/7 aren't meant for acceleration, purely for fuel economy.

What is this sorcery you speak of???

Rod Saraiva · 01-30-2013, 08:58 AM

7th on AT is for gas savings.

I could run 180mph at 6th on a TT 7AT, but I did not filmed.
I don't know what is the limit of the automatic transmission, for this reason I don't give more.

I'll try to record the next.

Sorry my bad english :P

RandyD · 01-30-2013, 09:07 AM

mine like to shift to 6th at around 110

DEpointfive0 · 01-30-2013, 11:33 AM

Quote:

Originally Posted by Rod Saraiva

7th on AT is for gas savings.

I could run 180mph at 6th on a TT 7AT, but I did not filmed.
I don't know what is the limit of the automatic transmission, for this reason I don't give more.

I'll try to record the next.

Sorry my bad english :P

The limiter on 7AT is 155MPH

And god bless you to buy a 370Z in Brasil, if I come can I stay with you???

(to our non Brasilians, the import tax is sonething like 500%, and you have to buy a brand new car... Can you say $200k 370Z?)

kidkotic2001 · 01-30-2013, 02:09 PM

Quote:

Originally Posted by Nailzs

I see about 2400 RPM in 7th gear at 70 MPH.

01-29-2013, 03:21 PM	#1 (permalink)
EndyKwon Enthusiast Member Join Date: Jan 2012 Location: Los Angeles Posts: 427 Drives: '11 BSilver Base 7AT Rep Power: 13	7AT, 7th gear: Cruising or Top Speed? Couldn't find anything in the search function, so slay me if this did exist! But yeah, just wondering if the 7th gear is used for cruising or top speed. My commute on the freeway averages around 70~80mph and I noticed that even on 7th gear, the RPMs lick 3K. Constant 3000 RPM seems a bit high for cruising in my opinion.

01-29-2013, 03:32 PM	#4 (permalink)
jpritche A True Z Fanatic Join Date: Oct 2010 Location: Cartersville, Ga Age: 32 Posts: 2,570 Drives: '15 RR, '14 IS250 Rep Power: 31	Surprisingly, I get better gas mileage not using 7th. The interstate I commute on daily is very hilly which causes you to basically floor it to maintain speed going up a semi-steep hill at 80mph. I find that if I stay in 5th I end up getting better MPG. YMMV. Also, the FI exhaust in 7th up a big hill is fairly annoying on the inside Note: On normal roads, I get better gas mileage using 7th. On the hilly interstate is the only place it is worse. Last edited by jpritche; 01-29-2013 at 03:51 PM.

01-29-2013, 08:20 PM	#8 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	Overdrive to improve economy and allow for better spacing of other 6 gears. I only use it for highway cruising over 70 or 80 MPH. __________________ Enjoy it. Destroy it.

01-30-2013, 08:58 AM	#12 (permalink)
Rod Saraiva Base Member Join Date: Dec 2010 Location: Brazil Posts: 46 Drives: Nissan 370Z TT 7AT Rep Power: 14	7th on AT is for gas savings. I could run 180mph at 6th on a TT 7AT, but I did not filmed. I don't know what is the limit of the automatic transmission, for this reason I don't give more. I'll try to record the next. Sorry my bad english :P __________________

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01-30-2013, 03:09 AM	#9 (permalink)
DarkJak A True Z Fanatic Join Date: Jun 2011 Location: Madison, WI Posts: 1,397 Drives: 2009 370Z Rep Power: 16804	5th on the 7AT and 6MT are 1.0 ratio, so 6th and 7th are technically both overdrive. Ever notice how the car shifts into 5th automatically if you switch into manual mode after cruising in auto? 6/7 aren't meant for acceleration, purely for fuel economy.

01-30-2013, 06:27 AM	#10 (permalink)
Nailzs Enthusiast Member Join Date: Aug 2012 Location: Florida Posts: 395 Drives: 13 370Z 7at Sp Tour Rep Power: 13	I see about 2400 RPM in 7th gear at 70 MPH.

01-30-2013, 09:07 AM	#13 (permalink)
RandyD A True Z Fanatic Join Date: Mar 2011 Location: Potomac Falls, VA Posts: 2,977 Drives: 2010 370z 7AT Roadst Rep Power: 20	mine like to shift to 6th at around 110