Quote:
Originally Posted by scottj
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.
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The headers came on the car when I purchased it. I haven't really looked at what options I have but my initial impression was that 1-3/4" would suffice as that is what most of the cars I have seen have. I'm sure the 2" flow well in high rpm applications but I would think they would be hurting the bottom end.