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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 was referring to this thread. All I'm saying is, with that b cam and gt40x heads, it ain't gonna happen. If you don't have any doubts, take it on up to 7g's and see what transpires. I'd be willing to bet the noise you hear as you near that mark is valve float.
It is the most suitable cam for a blower that FMS makes, but really a split duration cam would be better for forced induction, something with more lift and duration on the exhaust side.</P>