Reply to "180's"

jfb05177Member

A 180-degree header ensures the firing pulse seen by the collector occurs every 180 degrees of crank rotation. On a V8, this requires crossing over two tubes from each bank to the opposite bank’s collector. With a 351C Ford’s 1-3-7-2-6-5-4-8 firing order (where 1 through 4 are on the passenger side and 5 through 8 on the driver side), Nos. 2, 3, 6, and 7 are crossed.

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2/12/185:28 PM

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