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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.
I had 4:10's in my 91 and the top end loss on the highway was pretty substantial, but the low end acceleration was friggin great!!!!! It was soooo much fun from light to light and at the track, but if you do alot of highway driving I wouldnt recommend it. If you have an automatic you can get away with it, but if youre running a T-5 id go with 3:73's