 The gearbox is rated for 260 ft-lb (353 Nm) of engine torque.The GM transmissions are usually numerically designated in newton metres that means F35 is rated at 350 Nm, the weaker rod shifted SAAB version of the F35, the F25, at 250 Nm, F40 at 400 Nm, M32 at 320 Nm, and so on.A limited-slip differential is available for high-output applications.