I am not saying what your saying is not correct, but that is the craziest way of designing a header that I have ever heard of. A 360 degree header means that there is a full crankshaft revolution between the tubes that are y'd together, in other word 1-6, 8-5, 4-7, 3-2. What that does for you is provide equal scavenging of every pulse by the one before it, every time the cylinder fires. Fords did it alot, probably because of the difference in the way the banks were numbered and the firing order. It would be pretty hard to do it on a gm it seems like to me.
I can't imagine what the advantage of a 180 header would be? I guess it would be better than a 90 degree header?
Last edited by gearbanger; 06-22-2011 at 07:58 PM.
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