What year did Ford start making the 5.4L 3 valve engine?
1997
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The first year of the Ford 5.4 liter V8 was 1997 as mentioned
above , but
that was 2 valves per engine cylinder .
The first model year of the Ford F-150 with the 5.4 liter 3V
engine was ( 2004 )
and then in the Ford Expedition it was the ( 2005 model )