Quote:
Originally Posted by Ace23
... I can' find much information that is based on real world test on primary header sizes on cobras but the few things post I have come across no one was raving about their 2" headers except for higher RPM setups.
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What is the reasoning for using 2" primaries in this application? We didn't using anything bigger than 1-7/8" on 440+ cid, 850+ HP, dirt oval race engines... and we had plenty of real world data. Maybe 2" for a drag race application, but drag and street aren't really relatable.