A little more information may be helpful-
If this is a roller cam, you will need a steel distributor gear to match the steel cam gear. Iron gears don't hold up to the billet steel used in the roller cams.
If you are running a High Pressure
oil pump, you are putting undue pressure on the distributor gear causing premature wear. Ford small blocks don't really need a high pressure
oil pump to work properly, even under relatively rough use. Keep in mind a High Volume pump isn't the same as a high pressure pump.
Try to make sure you get as much of the ground up metal out of the engine as you can before putting it back together and firing it up. Getting all of the metal in your bearings can cause a huge problem later on.....
Bob