4x4 lock in

My first year with my '10 taco in the snow. I am running 305/17/70 ( i know abit large) w/ a 3" lift. My question is when i go from 2 to 4 w- drive it without the tires spinning it make a lock in noise,not really loud, but louder than other truck that i have had. Is this normal with this gen. Or do u think there may be a problem that i should attend too?

 

Mine is much smoother when you are moving going from 2H to 4H and vice versa. If I am stopped it will shift but it makes a clunk.

 

I think he means with foward movement ie wheels turning in motion. In my vernacular spinning means not having traction and turning means making progress. Some people say spinning and mean turning.

What I believe he is asking is should there be an audible clunk if you switch between 2wd and 4wd if you turned the switch while stationary. Which the answer would be yes.

To OP if it makes a clunk its fine. Unless it sounds like a Pinto just rammed you otherwise a clunk is normal. Sometimes the clunk is delayed you might start moving again before it slips in fully other times it will slip and you'll feel/hear the clunk right away once you start moving. I get the smoothest transition when switching while driving forwards but that also depends on the terrain.