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Old 04-27-2010, 08:30 PM   #1
Crazy8
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Default Legacy GT Spec B Transmission

Researching Legacys for modification. What can a Spec B 6-speed withstand power-wise (looking for broad answer)? How about the 5-speed on the '05-'09 GT's?
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Old 04-28-2010, 12:17 AM   #2
PHATsuby
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Location: MN
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2001 Legacy GT back
to stock is a project too

Default

If you are going for crazy power(or even moderate) I'd just get the Spec B. The six speeds can handle in excess of 600wtq(OEM clutch cannot though). Many feel the Spec B 6MT's are ideal due to their different gearing compared to the STi as well.

The 05's can likely handle in the area of 400wtq if I had to put a number on it but not with sound reliability like the six speed. Again it will depend on how you drive and what you plan to do that will directly effect how long it lasts. It is possible to break the 5mt on stock power if you are an idiot.

hopefully that helps.

Ben
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Old 04-28-2010, 08:02 AM   #3
Crazy8
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Thanks. I can't imagine going to more than 400 wtq. I want a setup that can handle WOT from time to time, but no lauches, no flat-footing, no slamming gears, etc.
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