Sorry for the lack of info
No 4wd hooked up, it's a desert truck
With the rear drive shaft detached from the rear end, truck in neutral, you can't turn the drive shaft by hand, you have to use a prybar and force it to turn. It is not the normal drag that you would feel, I am not a newbie haha
If you depress the clutch it spins normally, also has the same symptom if you put the transfer case in neutral.
Also when the truck is running in neutral and you let the clutch out, you here the rpms drop a little and the truck almost wants to go forward