That's early by what I've always been taught.
what’s the cutoff date between early and late 2004 model trucks?
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View attachment 79052
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The 04.5 engines were the first 325 HP, so yours is 2004.5 1320 is correct on the date.
Different piston and injectors were the only real difference in engine design until 2006 model year.
Dang, the guy looking up paint codes at the body shop ain't gonna like this! :lol:
The split on the year for looking up paint codes was always the 6th month of the year.
The 04.5 engines were the first 325 HP, so yours is 2004.5 1320 is correct on the date.
Different piston and injectors were the only real difference in engine design until 2006 model year.
Did not know that, because I do bodywork badly, and with a spray can.
I always assume the paint code was listed on a sticker in the glovebox or door frame.