1987 Chevrolet Camaro Iroc-z Wont fire/start

My Camaro has been sitting for seven years in my shed it has 27,000 miles on it and I decided to pull it out of storage this weekend. I bought a new battery and cranked and cranked and all it does is spin the motor, <5.7 TPI> after turning they key on and off many times I managed to get one fire out of it. I tested the wires going into the tank and there was power, but only on one of the three prongs, or hookups. Maybe only the fuel guage wire? It has spark, and a good disrtibutor, but I think the mice might have gotten to a wire, or my fuel pump is gummed up and just wont pump. I just put 3 gallons of good premium gasoline in it. Any help would be greatly appreciated, would like to see this car on the road again soon.