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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old 10-09-2010, 12:03 AM   #1
86 newbie
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Default spark plug gap

i have a 1986 mustang gt and i need to know wat to gap the plugs at, does .050 sound right?
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Old 10-09-2010, 12:53 AM   #2
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Quote:
Originally Posted by 86 newbie View Post
i have a 1986 mustang gt and i need to know wat to gap the plugs at, does .050 sound right?
If I remember right, book calls for 0.054. You should be fine.
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Old 10-09-2010, 09:30 AM   #3
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thanks
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Old 10-10-2010, 10:20 AM   #4
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stock is .052

but i'd go smaller. an '86 is most likely gonna be a little weak in the spark dept after 24 years.... bigger gap is NOT gonna do anything for you at this point but give potential trouble

i'd gap them at .048" if i were you, and use stock coppers... nothing special or again your asking for trouble. especially with platinums
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Old 10-12-2010, 06:34 PM   #5
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the Hayes Manuel calls for .045 so that's what i gaped them at. What does platinum's do, i was told that they were better.
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Old 10-13-2010, 01:00 PM   #6
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I run Autolites in mine with 10LBS of boost and never had an issue.
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Old 10-13-2010, 01:13 PM   #7
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why did I think the gap is .54?
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Old 10-13-2010, 01:19 PM   #8
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because .54 is the max stock gap according to my chilton (.50-.54)
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Old 10-13-2010, 01:19 PM
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1979, 1983, 1995, 50, 86, 88, 95, ford, gap, gt, mustang, plug, spark, sparkplug, v6

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