Can Auto stock trans handle 500whp safely?

FPenvy · 08-20-2014, 05:21 PM

Quote:

Originally Posted by JWillis72

No that shift is much slower than the others even after tuning it.

Agreed.

When I got tuned I had my line pressure raised a little since I'm only NA and still get the blip.

nomodsjk · 08-20-2014, 06:05 PM

Quote:

Originally Posted by FPenvy

Agreed.

When I got tuned I had my line pressure raised a little since I'm only NA and still get the blip.

I'm tuned by R/T tuning and while they did an amazing job it still does the wacky upreving between 4th and 5th but only occasionally. I noticed it does it more when shifting from the shifter than with the paddles

gbrettin · 08-20-2014, 06:25 PM

I really dislike the wonky feeling between 4th to 5th when i'm on my nitrous. I thought my transmission was slipping when I was at the track... It's good (kind of) to hear others having the same issue.

Jordo! · 08-20-2014, 07:07 PM

Quote:

Originally Posted by nomodsjk

There is a company in new jersey that does a rebuild for 3,200$ but I can't remember their name. I had somebody tell me in a pm but I erased it when my pm box got full.

level10?

Jordo! · 08-20-2014, 07:10 PM

Gears below 5th are stouter and more able to handle the extra torque -- so no flooring it in 5th.

Upping the line pressure and a beefier trans cooler to minimize heat is a good idea.

nomodsjk · 08-21-2014, 12:33 AM

Quote:

Originally Posted by Jordo!

level10?

Yes that's it! Gracias amigo

FPenvy · 08-21-2014, 08:41 AM

Quote:

Originally Posted by nomodsjk

I'm tuned by R/T tuning and while they did an amazing job it still does the wacky upreving between 4th and 5th but only occasionally. I noticed it does it more when shifting from the shifter than with the paddles

heard good things about them and they are in PA so i gotta like them.....even though its near philly

my car has never seen actual "automode" i only drive in manual. everyday i only use the shifter and when at the track or driving hard i'll use the paddles. just in those situations where 2 hands on the wheel seems appropriate lol

Quote:

Originally Posted by gbrettin

I really dislike the wonky feeling between 4th to 5th when i'm on my nitrous. I thought my transmission was slipping when I was at the track... It's good (kind of) to hear others having the same issue.

yea man trust me every AT owner has had this at some point.

Quote:

Originally Posted by Jordo!

Gears below 5th are stouter and more able to handle the extra torque -- so no flooring it in 5th.

Upping the line pressure and a beefier trans cooler to minimize heat is a good idea.

thats the main reason i gave up on boost a long time ago. whats the point of boosting a 7AT when i lose the top 3 gears in the trasmission. you can get them back for $6000 in a stage 4 tranny from GTM (if they actually send it back and not just take you money lol).

TheBoomSpoon · 08-21-2014, 09:27 AM

7at i get this also. When i run thunderbolt i shift to 5th slightly early at 115 to 120mph and it does this.

Also on street sometimes hard accel in 4th then shify into 5th. Rarely happens on syreet though. Maybe heat related... i dunno

2009 7at touring
AAM 2.5 true dual exhaust
AAM de test pipes
Z1 headers
AAM 2.75 cold air intake r-line
motodyne m370 manifold
whiteline f/r sway bars
swift lowering springs
quaife LSD
Z1 34 row oil cooler
Z1 brake rotor and pad upgrade
Tune via hills garage
best 1/4 12.841 at 108.7mph 3540lbs with me in it

Jordo! · 08-22-2014, 12:23 PM

Full auto shifting is based in part on load, so it may not be slipping so much as seeing transitions in load that are not jibing with TPS, road, and engine speed, resulting in some gear hunting.

FPenvy · 08-22-2014, 12:25 PM

Quote:

Originally Posted by Jordo!

Full auto shifting is based in part on load, so it may not be slipping so much as seeing transitions in load that are not jibing with TPS, road, and engine speed, resulting in some gear hunting.

full auto shifting? what is this blasphemy you speak of?

08-20-2014, 07:10 PM	#35 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	Gears below 5th are stouter and more able to handle the extra torque -- so no flooring it in 5th. Upping the line pressure and a beefier trans cooler to minimize heat is a good idea. __________________ Enjoy it. Destroy it.

08-22-2014, 12:23 PM	#39 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	Full auto shifting is based in part on load, so it may not be slipping so much as seeing transitions in load that are not jibing with TPS, road, and engine speed, resulting in some gear hunting. __________________ Enjoy it. Destroy it.

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08-20-2014, 06:25 PM	#33 (permalink)
gbrettin A True Z Fanatic Join Date: Oct 2010 Location: Portage, MI Posts: 2,284 Drives: Tricycle Rep Power: 589151	I really dislike the wonky feeling between 4th to 5th when i'm on my nitrous. I thought my transmission was slipping when I was at the track... It's good (kind of) to hear others having the same issue.

08-21-2014, 09:27 AM	#38 (permalink)
TheBoomSpoon Base Member Join Date: Feb 2014 Location: Charlotte, NC Posts: 223 Drives: 2009 370z 7at Rep Power: 11	7at i get this also. When i run thunderbolt i shift to 5th slightly early at 115 to 120mph and it does this. Also on street sometimes hard accel in 4th then shify into 5th. Rarely happens on syreet though. Maybe heat related... i dunno 2009 7at touring AAM 2.5 true dual exhaust AAM de test pipes Z1 headers AAM 2.75 cold air intake r-line motodyne m370 manifold whiteline f/r sway bars swift lowering springs quaife LSD Z1 34 row oil cooler Z1 brake rotor and pad upgrade Tune via hills garage best 1/4 12.841 at 108.7mph 3540lbs with me in it