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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.
If you run mainly in the city, it won't be too bad, but if you are concerned about gas milage and the road go with 3.73. The 4.10 will pull a lot better on the start though.
This also kinda depends on what transmission you have. With a c4/c5 your rpms will be up there a little ways but like it was said before in the city won't be too bad but the highway or interstate will kill you. I know my 83 has 2.73's in the *** with my c5 thats why i ask.