How long do you cook a precooked 8.5 lb ham at 350?

i would recommend that you cook a whole ham long and slowly. say at about 150 degrees celcius for about 3 hours or so... of course this depends on the size of your ham... if it is very large you should cut it in half first and cook them like i said above. i would also recommend that you cover the ham in honey.. mustard powder and a sprinkle of brown sugar before putting it in the oven hope this helps.... =P