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03-04 Turbo Whistle

3895 Views 10 Replies 5 Participants Last post by  teamroper60, 
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I was wondering if anyone could possibly help. I just bought an 04, and want the awesome turbo whistle that the 03 and 04's have when I do exhaust. I have read that it was only the 03's and early 04's that have that really loud whistle. The ones with only 10 blades on the turbo. My truck has a mfg date of May/04. Would that be considered a late 04, one with 13 blades on the turbo?
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teamroper60
dcovaleski said:
IIRC any truck built after 9/22/03 is considered a late 04, and has the updates. I'm sure on the month and year, and I think 22nd was the day...
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Ford's literature says the change over was 09/29/03 for the truck build date. I believe the engine build date cut off may be 09/22/03 though, since that is the date shown in their online parts catalog when searching for engine parts.......
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