Hello friends, i am rebuildin my engine, with forjed internals. I know That the engine was bearing a lot of power, but im not sure with the gearbox..
how many hp can lasts the wrx version 6 gearbox?
thanks and please sorry for my bad english

 

WRX boxes are good up to around 350 - I'm running 390 on mine, remember it's the torque that kills them not the BHP. 350 lb/ft should be ok, any more and it will either be absolutely fine or not, depends on the box,/driver/driving style/clutch/smoothness of power curve.

 

Ok, thanks friend, my car is arround 330 hp and 400Nm torque.
I hope that it lasts a lot of time
thanksss

 

so what would limit be for a sti gearbox?blobeye

 

I think you get a medal if you break it
in other words, lots of torques

 

Pretty much bomb proof!