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What is the cylinder layout on a 1998 ford expedition 5.4L?

The 1998 Ford Expedition 5.4L Triton V8 engine uses a two-plane crankshaft and has a firing order of 1-6-5-4-3-2. This means the cylinders are arranged in a V-formation with two banks of three cylinders each. It's not a simple "in-line" or sequential cylinder numbering like a smaller, inline engine would have.