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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.
<FONT size=2>How much would it cost to put some 2.02 valves on gt40x heads ? I would do it when I rebuilt/ported them but is it like alot more or just a little ? Any performance gain ?</FONT>
I doubt you will get much if anythingunless you have had port work done to the heads. If you had portwork then larger valves would make a considerable difference on the top end.