The GM 5L40-E transmission was fitted by BMW to the M57 powered Range Rover L322 between 2002 and 2005. The gearbox was built by General Motors in a factory in Farnce.
It is designed for service in vehicles up to 4000 lb (1814 kg) GVWR and in service was mated to a final drive ratio of 3.08:1 in the L322.
The 5L40-E had been designed for 1.8–3.6 L engines with a maximum of 250 ft·lbf (340 N·m) of torque. It was also used in the BMW 5 series E39 mated to the M57D30 engines. The M57D30 rated torque output is 390/410Nm
Why is this interesting? Well the TD6 L322 in its stock form produced 175bhp and 390Nm or 288 ft·lbf of torque so we can assume that any TD6 L322 has the over rated GM gearbox.
How hard can we push it… I dont know but I am sure we will find out one day!
