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Old 08-06-2014, 01:38 PM   #1
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Spark plugs

Did some investigating today after owning my GT for two weeks. Found that the spark plugs have NEVER been changed. 20 year old car and it still has the same spark plugs. Smh.Click image for larger version

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Old 08-06-2014, 01:42 PM   #2
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Those plugs look different.
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Old 08-06-2014, 02:40 PM   #3
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Quote:
Originally Posted by smurf stang View Post
Those plugs look different.

They are. Gotta love napa giving you the wrong parts. Just comparing the gap though.


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Old 08-07-2014, 08:45 AM   #4
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Get some good ole cheap autolites and set the gap to 50 to 54 area.
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Old 08-07-2014, 10:45 AM   #5
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Its probably the same plug, just 8 thread. Example is an autolite 104 is the same damn plug as an autolite 764, just 4 more threads.
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Old 08-07-2014, 11:07 AM   #6
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Its probably the same plug, just 8 thread. Example is an autolite 104 is the same damn plug as an autolite 764, just 4 more threads.

Yeah they originally gave me the 104s. I was just worried I might run them into the pistons so I got the right ones. They ended up giving me 25s


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Old 08-07-2014, 01:06 PM   #7
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25s are OEM replacement for E7 heads. 764s are for GT40s. If you have aluminums, find out what plug you are supposed to run.
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Old 08-17-2014, 07:23 PM   #8
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Yes get the Autolites....everybody loved them back in the day.

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