Join Date: Mar 2003
Location: Williamstown, WV
not a 347, but I use the autolite AR3923 plugs. They are autolite "race" plugs. never had any good luck with champions in a ford.
91 notch, 408W, 10.5 comp, Jay Allen cam, Crane linkbars, Scorpion rockers, vic jr intake/heads, Canton pan, Mac longtubes, C4, UPR adj. uppers/lowers, Strange struts/shocks, subframe connectors, wild rides 6pt, Team Z k-member/anti-roll bar, MSD ignition.