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Old 07-08-2019, 12:12 PM   #1
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Confirm plug gap is .054 and torques is 28 foot/lbs

1999, 6.8L, 2 valve. Can someone confirm plug gap is 0.054 and torque is 28 foot pounds. Iíve seen conflicting information on the internet. Thanks.

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Old 07-08-2019, 12:49 PM   #2
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While I can't confirm your torque value, I will say that I have never seen an aluminum head with a spark plug torque value that high. Typically, it is in the 15 lb-ft torque range (plus or minus).

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Old 07-08-2019, 12:51 PM   #3
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Yes: Gap 0.054 and torque to 25 ft-lbs.

I recommend Autolite AP103. apply a very thin film of antisieze on the threads. Don't glob it on like you might do with a bolt. Torque to 25-28 ft lbs.

The factory says to torque to 160 inch lbs, (about 13 ft-lbs) . But because of Fords history of spitting plugs, most ford enthusiast agree to up this to 25 ft-lbs.
1999 Fleetwood Southwind 35S (Ford F53 6.8L V10 275hp 4R100 4 spd trans) - Toad 2003 Saturn Vue.

It won't do MACH 2, but I can get a sandwich and take a pee.
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Old 07-10-2019, 06:44 AM   #4
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As someone with a 1999 F53, who has also spit a plug at 69,000 miles, Let me add that the 28 ft pounds torque is the only way to go. It is usually the number 4 plug and that is what went on mine. There is to many people who have spit plugs at factory torque to go with the lower torque. The guys in California who came up with this new torque claim no one has lost a plug using this higher torque. Also make sure you use the plated plug.
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Old 07-10-2019, 04:27 PM   #5
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I followed Mr. Waiter21's advise, used the ap103 plugs, applied a thin coat of anti-seize, gapped to 0.054 and torqued to 25 foot pounds.

I'm also replacing water pump, coolant pipe, coolant hoses, injector orings. Fun-fun.
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Old 07-11-2019, 02:16 PM   #6
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28 ft-lbs here.

Ole and Anne Anderson, Highland, Michigan
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