500Hp Stroker Paid In Power 004
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4 Millen then went to work altering the tune for max power. When the session was over, our 5.3L cranked out 519 flywheel horsepower and 471 lb-ft of torque. Impressive for a naturally aspirated Four-Valve! We can’t wait to get it in Superfly and get to the track! View Related Article
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