NOS Three-Valve Kit Test - Liquid Displacement
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Run on the engine dyno with a set of long-tube headers, the 4.6L produced 360 hp and 387 lb-ft of torque. After adding the 75hp shot, the peak numbers jumped to 427 hp and 468 lb-ft of torque. Had we held down the activation button a tad longer, the peak number would have exceeded 440 hp. View Related Article
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