Did you degree the cam when you installed it? Sounds like you may be off on your timing events and need the added timing to offset the effects of poor cylinder filling (cam advanced too much). Just a thought. Also, have you verified the computer's timing advance? Are you getting the initial +17 degrees at higher rpm & load?
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Jeff Chambers
1990 Mustang GT 10.032 Seconds / 137.5 MPH
14-time Street Warrior World Record Setter
CRT Performance
2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH
2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2
"There's nothing boring about a small block automatic shifting gears at 9400 rpm!"
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