Gs300 Tranny

[Abear]

Does anyone know how much the stock tranny on the first gen GS3? I've been looking it up and so far all i have found is the model of the tranny, its a A340E. I searched google and still came up short. Im trying to figure this out because i want to turbo and im not sure how much the transmission can handle. I mean i dont want major power just maybe round the 340-350 area.

If anyone knows the limits, it would help me out alot.

Jacob

[TurboGS300]

Alot depends on your driving habits. <_< There is no magical # that once exceeded the tranny breaks.

The TT Auto gearbox (A340E) is a very strong auto, but it will break if you are running over 300rwkw. This auto is unique to the 2JZ-GTE engine, despite many other Toyota autos also being labelled as A340E autos. The 300rwkw limit is well below the limit of the Getrag 6 spd gearbox (around 500rwkw), so if you are making serious power, make sure you are using the Getrag box. The W58 5 speed that comes with the non-turbo 2JZ-GE engine can only take around 260rwkw before it will break and the 2JZ-GE auto can only safely handle around 200rwkw.

You can make the TT auto box survive longer if you manually change gears when you race it, as this puts most of the torque loading during gear changes through a stronger part of the auto. Also you can get the solonoids upgraded so that it changes gear faster, as this reduces the loading on the auto during gear changes. This will allow for up to 350 rwkw. For it to survive beyond that, you will need very expensive strengthening of internal parts that is offered by several USA Auto transmission companies. When suitably strengthened (at much cost) the auto gearbox can then handle as much power as the Getrag does.

[Abear]

Thanks Turbo, I did some research with the numbers you gave me, and 300rwkw is the same as around 400 hp, which is plenty enough for me. I only want to be between 320 and 350. Of course, none of this will be happening until sometime next year, but I will have it done.