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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
In '93 it went to 205hp because ford supposedly came up with a different way of determining the hp. (Don't ask me!) I have a '93 5.0 and it's rated at 205. I have a theory that it went from 225 to 205 because '93 is the year that the 5.0 was built with hypereutectic pistons.
I don't think 225 is far off.
My 91 with 25% loss on cyl 6 still put 206 to the rear tires with mac headers, catless H pipe, flowmasters, and a msd blaster coil.