I have a 1990 5.0, but have a 1994 crate motor in it. It is somewhat modified and I get about 12 miles per gallon when I am strictly in town, but get as high as 29 on the hi way. Usually with a combo of driving I see about 19 mpg. Use the search engine on the site to find old topics on fuel mileage....we have covered this topic several times. If you pull up those topics, it will give you a good idea of what mileage everyone gets and what mods they have on their car. Good luck!
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