[chevytruckluver]

Originally Posted by gweav3

The motor will run for a while (but lacks power) but then starts to misfire as it warms up. The distributor cap also wobbles and I dont know what that is about. I have run out of ideas so....

Any suggestions?

If the distributer cap is wobbling, you need to look into that first, most likely it is not setting down on the distributor correctly. If is off that much it may be misfiring. The only thing that actually touches inside the cap is the top center of the rotor.
Good luck