drive shaft

Ok so I have a 79’ GMC Caballero and I need help with whatever the duck is happening here? I have never seen something like this and don’t know what to do first. Bought the car and it turn over everytime, and shifts good just can’t seem to move from where it’s at it revs and revs and revs but no...

I have a 1980 malibu with a 350 transmission and open diff rear end. My car makes loud clicking noises when i change from park to reverse/drive or reverse to drive etc. also makes click when i accelerate hard. there is about 3-4mm of up and down slack where the driveshaft meets the...