1994 Buick Century vibration damper removal (crankshaft pul

1. The center damper bolt has been removed.
2. The camshaft sensor has been removed.
3. I have sucessfully removed one of these from the same 3300 engine in an Oldsmobile.
4. Except for the sensor plates on the back of the damper's the two of them look the same.
5. I could be off one or two on the year. Might be newer.
6. It does not look like any kind of puller would work.
I can't get it to budge.
Any help would be appreciated. Thanks