The flywheel is a single mass that was in a 91 that was my parts truck. I will try shifting into neutral when i go to town later and see what happens

 

The vibration in the t-case shifter almost completely goes away when in neutral at 65mph. What does this mean

 

Something could bend inside the transmission...

 

something could bend, or something is bent and out of balance causing this vibration. Also new problem, i think one of my calipers is sticking, is there anything to put on them to free them or do you just replace them

 

You just replace them, its easier to replace a caliper than to fix the damn things lol. I got your IP out today, I am putting a Tach sensor in the 84(got the cluster in so i gotta put the sensor and stuff in, well...i gotta swap oil filler neck things so the IP is out.

 

still curios on what is causing the vibration. i am not affraid of spending money on parts but i will never pay somebody to fix my truck. however i do want to fix the the broken part before it kills more parts