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Old 10-12-2013, 11:19 AM   #1
Scooby Newbie
Member#: 370639
Join Date: Oct 2013
Chapter/Region: MWSOC
Location: Oshkosh WI
2006 WRX Hellastock
WRB Pearl

Default 06 wrx trans

Hey guys, I'm looking to start building my motor finally, how much torque can a stock trans handle?
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Old 10-12-2013, 11:45 AM   #2
Uncle Scotty
Scooby Guru
Member#: 16200
Join Date: Mar 2002
OK Houston
we have an Uncle


not enough...sell the wrx get an sti..start there
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Old 10-13-2013, 02:43 PM   #3
Big Ron
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
on car parts so PM
me b4 j00 buy


Transmissions handle shock load not torque, read the post titled Transmission FAQ for more info. NO ONE knows what the OEM trans will hold as they have blown from stock to highly modified with a long life as it depends on the driver more than anything else. If you are asking this question, odds are you need to upgrade and you should do so carefully as there are many options and this is a long and complicated decision tree.
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Old 10-15-2013, 10:29 PM   #4
Scooby Specialist
Member#: 253442
Join Date: Jul 2010
Chapter/Region: BAIC
Location: El Dorado Hills / Folsom / Sac
2006 V7 Sti 6speed
Built motor 20g // 446whp


Originally Posted by boosted_russian View Post
Hey guys, I'm looking to start building my motor finally, how much torque can a stock trans handle?
If the motor doesn't "need" to be built. Spend the money on a six speed swap.

I was planning on building my motor with intent of finally bolting up my blouch 20g XT. But instead I did a six speed swap because my motor still has some life left in it.
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Old 10-16-2013, 06:23 PM   #5
Scooby Newbie
Member#: 367285
Join Date: Sep 2013

The stock 5 speeds can't handle much more than stock w/ boltons for long
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Old 10-16-2013, 10:05 PM   #6
Scooby Specialist
Member#: 254851
Join Date: Aug 2010
Chapter/Region: BAIC
Location: Nor-Cal Bay Area
2002 Wrx wagon 5mt


There are plenty of post just like this.

5 speeds (even the early ones) are not made of glass. They don't like to be abused though. Some people trash them with stock power. There are plenty out there with around 300hp/330tq that are holding up just fine.

The bottom line is if you are making less than 350hp/tq, then it's on you and your ability not to blow it up.
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