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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.
demons are gr8 on the track. they bring the suck on a d/d. they are very sensitive to air density. i had one and it was a pita to get right. it would run great in the morning.(nice cool dense air) run all kinds of crazy in the afternoon. but this is florida where the heat reaches 100* often and the humidity is always about 80%. just my experience with them.
I run a Road Demon Jr 525 on my 74 F250 300 cisix (weekend driver), a Road Demon 725 on my Son's F150 358 ci (daily driver), and a Holley 650 on my swamp buggy. I havehad no problems with the Demons, many problems with the Holley. My Demons seem easier to tune than my Holley also.