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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.
There is a lot of talk about heads on the 86 HO, but very few people actually answer the questions. Will regular GT40 heads with the larger combustion chamber work? Will unmilled E7s work? I've read a lot of conflicting info.