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Old 03-24-2026, 01:08 PM   #1
Dan-K
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Join Date: Aug 2009
Location: Ft.Collins, Co.
Posts: 110
Plugs for 416 heads ?
I am putting a set of #416 heads on an early 350 . What plugs are the best option ? AC used to be good or NGK ? Do I need a shorter plug to avoid interference with the piston ? Pistons are standard flat tops .
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