Ford Aluminum 5.4L Header Swap - All-American Header Test Part 2
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Since time was in short supply, we stepped right up to the 2.0-inch headers (we wanted them for our shot at 1,000 hp). Equipped with the 2.0-inch headers, the boost dropped to 11.4 psi, while the peak numbers jumped to 788 hp and 645 lb-ft of torque. View Related Article
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