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Spark Plugs for GT40x Heads Spark Plugs for GT40x Heads
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  #1 (permalink)  
Old 11-30-2004, 08:34 AM
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Default Spark Plugs for GT40x Heads
What spark plugs are you using in the Ford GT40x heads.
Thanks
auto10x
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Old 11-30-2004, 08:38 AM
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AGSF-32C
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Old 11-30-2004, 09:28 AM
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I use Autolite AGSP 32C also
Mark
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Old 11-30-2004, 09:48 AM
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will the plugs from the Ford Lightning work in these heads?
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Old 11-30-2004, 10:21 AM
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The Lightning uses GT40 Iron heads, don't know about plug interchangeability.
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Old 11-30-2004, 12:04 PM
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Plug selection should be determined by the manufacturer of the heads. Talk with them and they will give you a range of plugs and brands.

Roscoe
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Old 11-30-2004, 12:37 PM
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Thanks for the information guys, I'll go with what you provided, which is more than I had.
auto10x
Bill
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Old 12-02-2004, 11:57 AM
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Bill....the crossovers at auto parts stores are Autolite 104 and Champs R512YC.
But...I always felt my 351W ran better with the more expensive Motorcraft Fomoco AGSF32C from the Ford dealer.
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