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Old 09-12-2003, 09:46 AM   #1
76bonanza
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Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
Another Plug question

I have just a oriely rebuild 350 headers and carb holly 650.

I am running ngk 6630 is this the right temp range and I am running .045 gap?

When will I have to go to a dif temp plug? Ie"intake, ignition box, cam new heads?

Thanks.
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1968 c10
lowered 3" 4"
355/Th400 built by Hatfield racing in joplin MO
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