as BC52 said, put an aftermarket gauge on it to see the actual temp as you may not really have an issue.
On an older engine that has been sitting that long, you may have a lot of rust and junk caked in the bottom of the water jackets in the block. Did you run a chemical flush through the whole system?
One other thing you can do is put a fan shroud on the radiator. I realize fan is only 1/2" away but, a shroud forces even more air through the radiator.
