Vehicle drive system

Claim 1

In a vehicle having front and rear drive wheels, the improvement comprising: an engine driven first propeller shaft; a first differential unit having an input shaft with one end coupled to said propeller shaft and the other end connected to a pinion gear for transmitting torque to the rear drive wheels; a first crossed-axis drive gear mounted on said input shaft; an output shaft; a second crossed-axis drive gear mounted on said output shaft laterally of and meshed with said first crossed-axis gear; a second differential unit including a pinion gear for transmitting torque to the front drive wheels; a second propeller shaft coupling said output shaft to said second differential unit pinion gear and; means for selecting one of a plurality of predetermined angular relationships between said input shaft and said output shaft, said means including a gear case for housing said output shaft and said second crossed-axis gear, said gear case having a plurality of bolt receiving holes formed therein, and a plurality of bolts inserted through said holes and threadably engaged with one of at least two sets of internally threaded holes in said first differential unit.