Strange slipping issue..

That's the thing,.it doesn't show any signs of slipping even when cold. I can start it cold and shift right in to drive and go with no slipping and no delay going into gear. My 66 Fury had that issue. I had to start it and put it into neutral for 30 seconds to get the pump going then it would shift solid.

I'm agreeing with transman that the seals could be hard also. I need to get it on the road and drive it to see if this will pass. I'm hoping it will get better after driving it a week or so.