May I ask what type of plugs you were running?
Sean
'92 RC Sport 3.9L 5spd - 250,000mi!
'01 CC SLT+ 4.7L 5spd 3.92 LSD Mobil-1!
http://www.twistedbits.net/WWWProfile/dakota/DnuuSncssJujU
<snip> The Autolite 3923 copper core spark plugs that
Ron recommended have absolutely liberated my 5.9L
engine. I knew I had 200+ HP in there someplace, </snip>
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