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According to one of Fords websites :

For a 1990 E-250 Econoline :

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The 4.9 liter / 300 cubic inch inline six cylinder engine and the 5.8 liter / 351

cubic inch V8 engine have the spark plugs gapped at ( .044 inch )

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The 5.0 liter / 302 cubic inch V8 engine has the spark plugs gapped at

( .054 inch )

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11y ago

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