Thread: Twin Plug drill
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HelmetHead HelmetHead is online now
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Join Date: Dec 2004
Location: Seabrook, Texas
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I would suggest leaving this modification to a competent machine shop that has done this before. (unless your a machinist that has milling equipment available for this type of work).

The going rate for twin plugging your heads is around 500-700 USD including the lower valve covers.
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Old 08-09-2012, 01:39 PM
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