tranny question....
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Joined: Apr 2007
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From: NV
tranny question....
Does anyone know how much HP & Torque our IS350's can handle before the transmission goes out on them? I know this is probably a new topic with very few Turbo kits available to them.
Transmissions don't care one whit about horsepower. They are rated by torque and torque alone. I would not expect any Toyota transmission to take much more than 50% more than the torque applied by the stock engine. Transmissions have always been a weak spot for Toyota (with the one exception being the Getrag 233 in the MkIV Supra, but it's not a Toyota transmission.)
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