clicking noise

When wheeling at the badlands today nothing crazy just driving around in the pea gravel really. Now I have a clicking noise when I take off from a dead stop. I was thinking maybe the u joints? Help! Running a 4.5 zone lift with 33's.

i had a clicking, seemed to be in perfect rotation of tires/ driveline when wheelin, found the dry ujoint, pulled it, flushed excessive grease through it and save 25 bucks, not a single click since!