Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - To drill or not to drill steam hole in 400
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Old 06-27-2008, 12:33 AM
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I think 3 of the 6 holes drilled in each head are at a 45 degree angle. Not sure which ones, Intake or exhaust side. This was stated in my Sportsman II nomenclature.

I'd drill 'em for a siamese cylinder type block.
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