Use a little Nevesieze when installing the new screws...you will get them out when necessary.

I got both drums off this afternoon.  I followed the suggestion to drill out the top of the screw, pull off the drums (with a few hits with a persuader) and extract the remains of the keeper screws with vice grips.  I tried to drill a small hole and use an Easy Out first but I couldn't get the screws to budge.

Thanks for the suggestions.

  'til next time

 Jack

If the flaired portion is not there, then the previous screw heads have broken off.  If this is true u should be able to remove the drums.  Once drums removed, use a rust buster spray, let sit and hopefully enuff of the screw sticks out to get vice grips on them to remove.

If the flaired portion is still there do as Hunter said.

Drill them out...they are in the countersunk portion of the drum (sometinmes need to do that with the standard items when they get rusted in tight).  Use a center punch and start with a smaller drill bit.  You just need to reach into the countersunk portion to eliminate the "flaired head" of whatever is there.  The drums should just pop off.  If not there might be some binding with the brake shoes and a good smack with a hammer should jar them loose.

Are you sure the drum won't just come off?  erhaps they aren't being held by anthing now.

After searching here and reading a bunch of threads about rear drum removal I haven't been able to locate any info on the problem I'm facing.  I have followed the steps outlined in the Haynes manual for drum removal (releasing the emergency brake, backing off the adjusters, etc.) and I've come to the point where I'm supposed to take the two retaining screws out of the drum and pull it off.  However, there are no screws in the holes to release.  Instead I have something with a flat surface with no slots for any type of screw driver where the screws should be.  I can see that a PO has removed one screw but the remaining hole on the passenger side drum and both holes on the driver's said drum contain the flat surface retainers.  They are flat and slick like the head of a nail.

 Any idea what they are and how to remove them?  In 30 years of working on all manner of cars I've never seen drum retainers like these.

 Jack