Random Ticking

[longscore]

Guys,i have a 92 w250 ,205 transfer case,518,etc,with approx.300k miles.I rercently started getting a random ticking noise,intermittent actually,and its getting progressively worse.It sounds like its coming from the transfer case,in and out of gear,but seems to diminish a bunch when i put it 4x4.All the fluids are good.What gives?Could it be the tranny?It sounds like metal on metal,like tapping 2 wrenches together while holding them tight.Thats the best way i can describe it.like tick....tickticktick...........ticktick..tick.Totally weird

[oldestof11]

Could be that you lost a hub spring.

[RCCUMMINS89]

are you sure it is coming out of the t-case or tranny area?

Just wondering if it isn't a thrust bearing failure... these are common and I have heard you can hear a difference when putting in and out of gear.

[BC847]

A cracked transmission flex-plate will transmit noise all over the place.

[longscore]

Im pretty sure its coming from the t-case.But i never thought of the flex plate.I think ima have to look at that.The tranny is tired anyway,i might be pulling it pretty soon if i dont sell it first.