View Full Version : GT 40 P heads...
gouldstang
07-23-2009, 09:55 PM
what spark plugs do use? I guess from an explorer?
Jeff88coupe
07-24-2009, 06:38 AM
n/a autolight 764 or 104's
poweradder autolight 763 or 103's
gouldstang
07-24-2009, 06:53 PM
Thanks...
RyanR
07-25-2009, 12:19 PM
I had good luck with ngk t-5's with my NA set up.
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