its an8 5 chevy k20 factory th400,np208 and rear 14 boltff theres a WIERD ass clicking noise from acceleration on up to about 30 35 mph,sometimes going around a corner can stop it,or start it clicking again. i crawled under it and checked the u joints,they seem nice and tight. one other thing,about am onth back,the truck was stuck in about 3-4 feet of water for about 4-5 hours before it could get recovered. i flushed the front fluid,was milky as hell i flushed the rear fluid,it wasnt milky,buti changed it anyways,with 85 90 weight. thats what schmucks said it called for. it only does it under power,it goes away if i let off the gas and coast. any thoughtS?