Wilma, What you have is pretty normal for those cars, stock. Power steering could be anywhere from 3.5 to 2.5 turns lock to lock, and stock boxes are very heavily assisted. If you have the 2.5 turn box, they are darned near twitchy.
Depending on how you feel about modifying the car, I can suggest one very popular fix.
Get a rebuilt steering box (from any autoparts store) for a late 80's Camaro "with special suspension." This is the box that was used in IROC Z's and WS6 Trans Am's. 2.5 turns, with a high effort and modern feel. You'll need adapters for the hose fittings and a different ragjoint, Lee Manufacturing has them.
Here's the details
http://www.camaros.net/forums/showthread.php?t=103139