Update: got the alternator to stop squealing, belt was Infact too loose. Now my problem is at the battery it only reads 13.1 volts at idling and 14.5 volts at the alternator idling. Bad ground somewhere? Please help
I would start by asking if you are using the same ground point when testing.
If you use the same ground point and read 14.5 one place and 13.1 then you have a voltage drop between the Alternator and the Battery.
I would first ask a few questions.
1. Have you replaced the ground cables from your battery to the Fram and from the frame to the engine/tranny depending on where it is mounted?
If you answer no, or I changed the end, then I would replace the cables, you can buy two off the shelf cables at your favorite parts place and replace them.
Clean the mounting stud on the frame so the threads are shiny, and use a WASHER to get good contact between the stud and the cables, then spray then with a battery terminal spray.
2. Replace your Power cable from the Battery to the Starter and the Alternator, you can buy off the shelf cables that have multiple attachment off shoots and run new power leads to your starter and alternator, probably wouldn't hurt to run new wires to each.
These are the most common points of failure in these older cars, and often over looked, as Oh I changed the end, but it still isn't right.
The Ground wire if still original is a unshielded bare copper braided single wire with a frame attachment point. These bare wires over the years have been subject to road grime battery outgassing and can corrode so that instead of being a big honking wire have become individual single strands of wire.
3. Riddle me this, what to Divorces, Computers, Good Coffee and Electrics all have in common?
THEY ALL START WITH GOOD GROUNDS.