Spark Plug help!
 

Getting new spark plugs and not sure which ones would offer best performance. Im stuck between ACdelco and NGK. Which ones would be best do you think? or does anyone have any experience in testing the two
thanks in advance all criticism welcome

AC/Delco Double Platinums.

Both NGK and AC Delco plugs were installed from the factory. I have seen one owner trucks that had never been serviced have 3 AC Delco plugs in one head and 3 NGK plugs in another.

Double Platinum plugs were the OEM plugs. The premium iridium plugs (iridium center electrode w/ platinum ground electrode) work nice in my experience with them.