901068-RFQ Ford Vehicles

Ford began using variable valve timing in 1988 for ford sigma engine. Ford became first manufacture to use Variable valve timing in a pick-up truck with the top selling ford F- series in the 2004 model year. The engine used was the 5.4L 3-valve triton. In 2005 General Motors offered the first Variable Valve timing system for pushrod V6 ................
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