370Z Auto Tranny max HP range

chris410 · 08-14-2009, 01:45 PM

What is the maximum amount of horse power the370Z 7 speed auto tranny can handle? I have not found what the limitation is (actual specification).

Thank you,
Chris

Reality · 08-14-2009, 02:11 PM

^LOLOL

I don't think anyone has..

m4a1mustang · 08-14-2009, 02:12 PM

333hp

355890 · 08-14-2009, 02:17 PM

Quote:

Originally Posted by m4a1mustang

333hp

Solid !

wstar · 08-14-2009, 02:13 PM

Quote:

Originally Posted by chris410

What is the maximum amount of horse power the370Z 7 speed auto tranny can handle? I have not found what the limitation is.

I don't think anyone definitively knows. The short approximate answer is that it will probably handle bolt-ons fine, but you may need some serious internals upgrades to handle FI.

chris410 · 08-14-2009, 02:23 PM

For those who haven't build cars up, you may not understand the question so I can see where some of the responses come from. Here's your chance to learn...every single auto tranny has a limitation on how much power it can handle. In a manual car your clutch has a limit as well which is why people upgrade the pressure plates/clutch etc..etc...
The smart thing to do is figure out what that number is. I'm sure the standard bolt-ons are fine, I am curious as to where the limitation is. I'm sure as cars are tuned and built up some of the shops will realize what this limit is which is why I put the question out there. It's always good to know how far you can go with your car before you have to upgrade certain components.

shabarivas · 08-14-2009, 03:09 PM

Go figure out how much the tq converter can handle ... it should be near there

Lug · 08-14-2009, 03:22 PM

I think the same tranny is used in the FX45 and if so, it handles 390 HP in that application. Assuming an engineering cushion, I'd say it should handle mid 400's minimum. The older 5AT in the 350Z's was good to just over 400 whp before you needed mods.

chris410 · 08-14-2009, 07:55 PM

Quote:

Originally Posted by Lug

I think the same tranny is used in the FX45 and if so, it handles 390 HP in that application. Assuming an engineering cushion, I'd say it should handle mid 400's minimum. The older 5AT in the 350Z's was good to just over 400 whp before you needed mods.

Thank you!

One_Quick_Z · 08-14-2009, 03:36 PM

Agreed^^ I would think 400whp before you would need to do some mods to the tranny

DAN

shabarivas · 08-14-2009, 03:46 PM

Why would you not upgrade the tq converter anyway? lol

chris410 · 08-14-2009, 07:58 PM

Quote:

Originally Posted by shabarivas

Why would you not upgrade the tq converter anyway? lol

Not sure what you're talking about. Along with the torque converter you also need to have the tranny built as well when you're pushing higher numbers. It's not as simple as only upgrading the torque converter

Anyhow, going by what others said, I'll use the 400RWHP as a guide.

08-14-2009, 01:45 PM	#1 (permalink)
chris410 Enthusiast Member Join Date: Jul 2009 Location: Virginia Posts: 345 Drives: 10' GT500 Rep Power: 16	370Z Auto Tranny max HP range What is the maximum amount of horse power the370Z 7 speed auto tranny can handle? I have not found what the limitation is (actual specification). Thank you, Chris __________________ Chris Current: 2014 WRX Stage I + SPT / 2013 Hayabusa 202HP Former:09 370Z 7-AT PW/Ark Type 2 exhaust/Evo R lip/TSW Nurburgring carbon Last edited by chris410; 08-16-2009 at 07:48 PM.

08-14-2009, 02:11 PM	#2 (permalink)
Reality Enthusiast Member Join Date: Dec 2008 Location: Toronto, Canada Posts: 290 Drives: '06 PPW GT Rep Power: 17	^LOLOL I don't think anyone has.. __________________ //2005 35th SB #81 [tyra] SOLD //2006 GT PPW SOLD

08-14-2009, 02:12 PM	#3 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6963	333hp __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

08-14-2009, 02:23 PM	#6 (permalink)
chris410 Enthusiast Member Join Date: Jul 2009 Location: Virginia Posts: 345 Drives: 10' GT500 Rep Power: 16	For those who haven't build cars up, you may not understand the question so I can see where some of the responses come from. Here's your chance to learn...every single auto tranny has a limitation on how much power it can handle. In a manual car your clutch has a limit as well which is why people upgrade the pressure plates/clutch etc..etc... The smart thing to do is figure out what that number is. I'm sure the standard bolt-ons are fine, I am curious as to where the limitation is. I'm sure as cars are tuned and built up some of the shops will realize what this limit is which is why I put the question out there. It's always good to know how far you can go with your car before you have to upgrade certain components. __________________ Chris Current: 2014 WRX Stage I + SPT / 2013 Hayabusa 202HP Former:09 370Z 7-AT PW/Ark Type 2 exhaust/Evo R lip/TSW Nurburgring carbon

08-14-2009, 03:22 PM	#8 (permalink)
Lug A True Z Fanatic Join Date: Dec 2008 Location: Texas Posts: 1,926 Drives: 2006 350Z Rep Power: 20	I think the same tranny is used in the FX45 and if so, it handles 390 HP in that application. Assuming an engineering cushion, I'd say it should handle mid 400's minimum. The older 5AT in the 350Z's was good to just over 400 whp before you needed mods. __________________ keep Chubbs in your pocket - Chubbs

08-14-2009, 03:09 PM	#7 (permalink)
shabarivas A True Z Fanatic Join Date: Apr 2009 Location: Sacramento, CA Posts: 2,188 Drives: 370z MB 6mt Rep Power: 914	Go figure out how much the tq converter can handle ... it should be near there

08-14-2009, 03:36 PM	#10 (permalink)
One_Quick_Z A True Z Fanatic Join Date: May 2009 Location: Seneca Il Posts: 1,374 Drives: 10 Civic EX Sedan Rep Power: 219	Agreed^^ I would think 400whp before you would need to do some mods to the tranny DAN __________________ -My BRZ with exhaust will decimate all if we overnight parts from Japan- 10 Civic EX Sedan- Current Daily

08-14-2009, 03:46 PM	#11 (permalink)
shabarivas A True Z Fanatic Join Date: Apr 2009 Location: Sacramento, CA Posts: 2,188 Drives: 370z MB 6mt Rep Power: 914	Why would you not upgrade the tq converter anyway? lol

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