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Old 05-05-2014, 06:25 PM   #1
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Spark plug gap

What is the spark plug gap for a 1989 Mustang gt 5.0 anyone know?

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Old 05-05-2014, 07:58 PM   #2
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What is the spark plug gap for a 1989 Mustang gt 5.0 anyone know?

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For an 89 Ford suggests gapping the plugs at .052 - .056

You might even have this tag still attached to your radiator shroud that tell you what to gap plugs.
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Old 05-06-2014, 03:50 PM   #3
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The Diagram man to the rescue.

Also just use plain ole copper plugs.
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Old 05-06-2014, 07:26 PM   #4
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The Diagram man to the rescue.
I think I see a signature in the makings .... The Diagram Man.
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Old 05-07-2014, 01:25 PM   #5
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Better than "The Diaphragm Man"
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391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
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Old 05-07-2014, 01:55 PM   #6
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My 94 gt. Suggest 0.56

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Old 05-07-2014, 02:00 PM   #7
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Would use autolite,l did a tune up recently and put motocraft and I wish I put the autolites back in.

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Old 05-07-2014, 03:38 PM   #8
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Better than "The Diaphragm Man"
Oh Yeah!!!
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Old 05-08-2014, 07:24 AM   #9
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Autolite 25s, set the gap to .054 and call it a day. Do the wires if you haven't already, Motorcraft wires are fine.
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Old 05-13-2014, 02:34 PM   #10
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I did gap my motorist @ .056 and it definitely put some kick back in it.

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---------- Post added at 07:34 PM ---------- Previous post was at 07:34 PM ----------

Motocraft

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Old 05-13-2014, 04:50 PM   #11
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Ya I have motocraft

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Old 05-13-2014, 05:19 PM   #12
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Motorcraft ASF42C ?
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Old 05-13-2014, 06:54 PM   #13
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I gor the distributor cap and wires and new spark plugs

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Old 05-13-2014, 07:41 PM   #14
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Yeah I put cap rotor button and motocraft plugs gaped .056 and 9mm.plug wires and she's hittin good really good gas mileage. She runs good for 94 and just flipped 100034 mls.

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Old 05-13-2014, 07:43 PM   #15
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10034 k I mentioned to say.

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Old 05-13-2014, 07:45 PM   #16
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Dam I had it right the first time I better quit...lmao

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Old 05-13-2014, 07:47 PM   #17
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Let me just say she flipped how's that..m.f sorry £€¥%&=÷=#%.lol

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Old 05-13-2014, 10:01 PM   #18
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Lmao

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Old 05-13-2014, 10:36 PM   #19
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Yeah Kyle I'm still thinking about that and lmao couldn't finish checking out Craigslist.😅

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Old 05-13-2014, 11:26 PM   #20
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Lol I really need a new gage cluster because I bought new covers to make it blue and just completely destroyed most of it lol that really irritates the living hell out of me because nothing on my dash works and that makes me frustrated because I can go like 40 and it will say 60 or something I really hate that and its going to be my everyday vehicle's besides my jeep do you know wherw I can get a new working one from?

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Old 06-04-2014, 10:53 AM   #21
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Kyle my son got a nice gage cluster off of ebay.check it out.

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Old 06-04-2014, 11:25 AM   #22
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When I had a 91 I had to get a new cluster off the evilbays (back in 2002 lol). My advice, don't hack up a good fox cluster to rice it out.
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Old 06-04-2014, 04:09 PM   #23
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When I had a 91 I had to get a new cluster off the evilbays (back in 2002 lol). My advice, don't hack up a good fox cluster to rice it out.
True Dat Son.
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391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
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