2004 or 2004.5 how to tell?
02-06-2006, 08:12 PM
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2004 or 2004.5 how to tell?
I know my build date is april of 04 and the motor has a sticker that says 325hp but doesn't say anything about tourque rating. just wondering if this tells me if this is an 04 or 04.5
02-12-2006, 01:26 AM
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Originally Posted by Buzzer
Its a 4.5. The 325/600 came out pretty much at the beginning of the year. Prior to that the hp was 305 for the 04.
02-12-2006, 10:47 AM
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Originally Posted by ed paul
I"m not forsure,,but i think the 04 had 3 in. exaust, 04.5 has 4 in.
02-12-2006, 05:28 PM
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The '04.5 models started with job #1, Jan 1, 2004. These are all 325 hp and will say so on the valve cover sticker. Lots of other differences like the fan shround is mounted to the engine, not the radiator. Also, as someone posted, often poorer fuel economy than the "little" 555. I've also heard the 555s are "faster" than the 600s, but not being inclined to race my little 555, I wouldn't know about that.
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