Dusterguy said

I dont want to start arguing with you how headers work, but I say that they dont need to be equal length. Firing order is not equal in left and right cylider banks, so making equal lenght primaries is waste of time. This info is directly from David Vizard.

Biggest problem with my headers is that primaries are too short. Collector is 2.5 not 2.0 like you said.

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Dusterguy said

Collector is 2.5 that tapers fast to 2. I did it that way because my exhaust size is 2". Now when I update to 2.5 exhaust pipe, I need only cut inch out of collector and weld 2.5 flange, then collector is 2.5 and exhaust pipe too.

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