The special tool is ford Rotunda tool # 303-D045 Expansion Plug Replacer
Call 1-800-ROTUNDA ( the number rings through to OTC/SPX tools) and yes it is required. The engineers would not have designed it nor would the manual specify it's use if that were not the case. The tool ensures that the plug is dimpled just the right amount while keeping the shape of the outer rim from becoming inverted, keeping everything in perfect position where it will stay in place. There is simply no way you can accomplish all of this without the tool. Eyeballing and artistic license are great for things like decorating cakes, but they have no place in rebuilding engines.
The freeze plugs are ford part #E3TZ6026A and list price is $0.97 ea
Either get them from Ford or from International, but nowhere else, aftermarket plugs are shaped differently and will behave differently in the tool, they also are not finished as well on the edges, the factory plugs have smooth well finished edges.
Call 1-800-ROTUNDA ( the number rings through to OTC/SPX tools) and yes it is required. The engineers would not have designed it nor would the manual specify it's use if that were not the case. The tool ensures that the plug is dimpled just the right amount while keeping the shape of the outer rim from becoming inverted, keeping everything in perfect position where it will stay in place. There is simply no way you can accomplish all of this without the tool. Eyeballing and artistic license are great for things like decorating cakes, but they have no place in rebuilding engines.
The freeze plugs are ford part #E3TZ6026A and list price is $0.97 ea
Either get them from Ford or from International, but nowhere else, aftermarket plugs are shaped differently and will behave differently in the tool, they also are not finished as well on the edges, the factory plugs have smooth well finished edges.