Originally Posted by
James @ M Developments.
The T34.63 is better for drivetrain than the T34.48 i was using as the power is more linear, the .48 is a real low down punchy turbo.
You may be ok on the .63, but its a little like russian roulette, your next time on boost may just be the gearboxes last, you never know lol.
That is high torque for standard box, but it also depends how you drive it. Did you take some hard launches or donuts with it alot? I've heard some people running stock 4x4 drivetrain, bar clutch, with a bit over 400 hp and no probs.
With over 360-370 hp and associated torque, the box should be ticking time bomb waiting for the one hard launch to kill it.
By the way, how easy it's to break a diff without doing any hard launches? Only fast road use but no launches? And to add, yes I've broken my center VC by doing few donuts on a 100k mile car, it has about 300 lb-ft.