Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - single-pattern cams VS dual-pattern cams
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Old 01-18-2013, 10:37 PM
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2 reasons to use a dual pattern cam.longer exhaust duration can help weak exhaust ports.
using longer duration on the exhaust side makes some cams act like they are bigger than they appear. closing the intake valve soon allows more time to compress intake charge,and generate more cylinder pressure
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