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#5
04-24-2011, 12:16 PM
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Re: Tuned Headers
To really tune headers perfect you should run one or two tubes over to the other sides collector, all depending on firing order and crank design (90° or 180°).
I think this was the major reason why they changed the firing order on ProStock engines, switching #3 and #6 to get a better exhaust flow through the headers. Jan 
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