Ok on my 86 sami I started having trans problems. It makes alot of whining noise during acceleration which i think could be the syncros. But today while im not accelerating the trans vibrates violently and  becomes very loud. it feels like when you are in 4H at a decent speed and let off the gas and coast, but I am not in 4wd. I also had a problem getting back into 2wd after being in 4L for a few mins. I have the transfer case shift fix from rocky so not sure whats going on.

The synchos won't whine, that will be a bearing somewhere or lack of lubrication, the vibration can have several sources, bad UJs, or if the vehicle is lifted or springs are tired, incorrect pinion angle.

well after 3 shops I still dont have the right rear oil seal for the trans. but when i took the drive shaft off the trans i found the bolts were loose. so maybe when i get it back together it will stop

Loose bolts will make a terrible racket. I got my last seal at O'reillys. It was thinner but the shaft and outside was the same.

well i tightened the bolts but the t-cases still violently shakes.... everything is lined up and tight. any ideas? and to top it off a hod latch broke while doing 40 dented my hood and damn near broke my windshield....and may have made me pee a little bit

Probably a bad U-joint or broken T case mount. or trans mount.

Probably a bad U-joint or broken T case mount. or trans mount.

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You are right. The ujoint I just replaced went out. I'm getting a new drive shaft the one I have is damaged so I've gone through 2 ujoints in a month.

Hood in the face huh.  I always wondered what that would be like.  Better to read about it.

  yeah it defiantly woke me up! If you get hood latches dont go cheap....you might make skid marks on more than just the road.