[4x4abc]

NEVER use SA or GA on any hard surfaces! - Dry or wet.
There is almost no advantage in using SA on wet streets. GA is out of the question anyway because it is low range with too much torque for slippery roads.
Using SA on muddy off pavement roads is OK - on snow as well.

Both SA and GA were designed with off-road situations in mind only. For street use the 460 has the 2WD setting.

Will there be damage to the drive components? Yesyoubetcha! Expensive too.

To make SA and GA (4WD high and low) available for everyday driving the 460 was replaced by the 463 series with full time 4WD.

The advantages of full time 4WD (or part time 4WD for that matter) are completely over rated and mostly misunderstood.
Do they offer safety? Nope!
Do they offer convenience? Yes, some.

http://4x4abc.com/jeep101/safety.html

Harald