Thread: header size for 500+hp
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Old 01-22-2018, 02:32 PM
78w72 78w72 is offline
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Join Date: Nov 2007
Location: iowa
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Originally Posted by ta man View Post
Going from my flow numbers on my heads SD is right at 75% after port work. At .400 272.2/205.3 75.42% at .500 300.6/226 75.18%
youre using 1 3/4 headers right?

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