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Lv 6
? asked in Cars & TransportationCar MakesDodge · 6 years ago

What spark plugs should I run in a 1977 Dodge Big Block 400 stock?

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  • Joser
    Lv 4
    6 years ago
    Favorite Answer

    The copper core Champion sparkplugs like the engineers spec seem to work great in these. NGK copper would be a good choice if this is a truck, but the leanburn cars I'd use Champion...

    Source(s): We had hundreds of these...
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