Need help

[Dean Malaxos]

Hi just picked up an 87' Mustang LX for $400. It ran great for the first week and then it died. My problem is that the gas guage was dead so I was told by my friend to fill it up and run it until I run outof gas and count the miles on the odometer, that will give me an idea of how long I can go until it needs to be filled again. Anyway my friend had an earlier Mustang so he though mine was like his-carborated. Well after I ran out of gas I put in a gallon and it wasn't enough to get it going. I was told I needed like 10 gallons. Well it still wont run. Did I fry my fuel pump? I was also told that there is a switch to turn on a fuel pump after you run it dry, is that true? If so where would I find it? Please help...Dean