I'm trying to replace the front disc brake rotors on my F-150 4x4. They are quite frozen to the hub. There was some rust behind the rotor so I chipped it out and smacked the front of the rotor with a mallet. I then tapped out the lugs and added a little bit of heat...no luck,still stuck... anyone out there have any ideas?

 

WD-40 it overnight and beat the tar out of it with your mallet. Get a bigger hammer.