Quote:
Originally posted by b055
autolites/motorcraft plugs are crap when u start making serious (600+hp) on spray! i've had too many to melt down to count. ac delco holds up a little better but by far the best has been the ngk's
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 Not many of us are making 600+ HP...
E
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1991 5.0 LX Coupe - 40,750 miles
331 cu. in. / Tremec 3550 / BFG Drag Radials
12.22 @ 114.31 mph - w/1.89 60'
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