Posted by BIGIRON
on 7/3/2009, 3:37 pm, in reply to "L72 AC Spark Plugs"
VIP Member and Board Expert
Grant,
I'm running Bosch or NGK platinum. Either are performing very well. Example; sitting at the body shop for 8 months, the car didn't often run long enough for the choke to pull off when being moved around. The guy told me it starting fouling once or twice so he made a habit of letting it run until it reached operating temp. I know from experience I would have had to replace AC plugs under these conditions. I recently removed the plugs and looked at them...they look rough, black as to be expected from too much idle time, but they still fire and I haven't noticed any drop in performance. I have run the AC Delco platinum plugs, but they cost around 7 bucks apiece. NGK and Bosch are cheaper.
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