I've read up on axles and CV joints but I don't THINK that's my problem.
Under heavy loads like up against a fair sized rock that I want to roll over, on a steep hills with something I need to get over, if I give it a little too much throttle it snaps loud. I stop.
If I try it by just being very gentle I can get through but a bumpy rough road before a obstacle makes that tough to control the peddle while on a roll. I get no clicking, vibration, or funny noises.

My VX has new outer half shafts, (maybe full axles) from the previous owner so I'm thinking he was trying to find,fix this problem which still might be the problem being I have no clue which brand or balls it has. I was only told new axles and I can see the outer have been replaced.
My VX also has 230,000 miles on it. I don't get the noise unless I'm in 4wd low.
With this many miles on my VX I was wondering about the chain in the transfer case.

Thanks. Butch