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How would I be able to tell if this truck I might buy is a 2004 or 2004.5?
The easiest way to tell the difference between a 2004.5 and a 2004, is to look on the drivers side of the valve cover, look where it says "Advertised HP" and if it says 325HP its a 2004.5 and if it says 305 then its an early 2004.
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2006 2500 with an Auto Trans: ATS, 23 Diesel, Hellmann, GDP, Exergy, EFI by Mike at ATP, Source Automotive and Quite a Bit More Stuff....
False info, the 03 cali was a 235hp edition truck and anything other than that 03-04 that had the 250hp motor was the SO, the 305hp 03-04 was the HO motor in the series, every motor in the 04.5+ series went to 325hp there is no HO motor for the 04.5+ series although they did change the TQ ratings on the 05's+ from 600ft lbs to 610 ft lbs (i believe thats when they changed it), other than that they are all equal. The 2003-2004 Trucks have 2 injection events and the 2004.5+ have 3 injection events. The 2004.5+ is an awesome motor to get power from if you are going to just throw a tuner, exhaust, and CAI on it and be done with it, The 03-04 are not as responsive to tuners as the 04.5+ due to the 3rd injection event in the 04.5+ trucks, when ran with tuners they run hotter than any 03-04 which cause melting issues, also the 03-04 had weak valve seats and common injector probs, but the seats only drop when under High Heat. Which in an 03-04 getting it hot with the proper mods is not easy to do. Also the 03-04 get better mileage due to the fact that they only have 2 injection events rather than 3, such as 04.5+. The 03-04 have a mechanically controlled wastegate, whereas the 04.5+ have an electronic wastegate. Also like I stated before, the 03-04 are not as responsive on tuners as 04.5+, but when the 04.5+ reach 800-900hp they stall, there has not YET been an 04.5+ truck (325) that has reached 1000hp+ on #2 only. The 03-04s can and do, do it. Anything else just ask
Eric Brown 1138HP #2 only 2004 305/555
__________________ Dallas
Sold: 2004 Dodge Ram 2500 QCSB
Now: Big Bad £B7 Dually
False info, the 03 cali was a 235hp edition truck and anything other than that 03-04 that had the 250hp motor was the SO, the 305hp 03-04 was the HO motor in the series, every motor in the 04.5+ series went to 325hp there is no HO motor for the 04.5+ series although they did change the TQ ratings on the 05's+ from 600ft lbs to 610 ft lbs (i believe thats when they changed it), other than that they are all equal. The 2003-2004 Trucks have 2 injection events and the 2004.5+ have 3 injection events. The 2004.5+ is an awesome motor to get power from if you are going to just throw a tuner, exhaust, and CAI on it and be done with it, The 03-04 are not as responsive to tuners as the 04.5+ due to the 3rd injection event in the 04.5+ trucks, when ran with tuners they run hotter than any 03-04 which cause melting issues, also the 03-04 had weak valve seats and common injector probs, but the seats only drop when under High Heat. Which in an 03-04 getting it hot with the proper mods is not easy to do. Also the 03-04 get better mileage due to the fact that they only have 2 injection events rather than 3, such as 04.5+. The 03-04 have a mechanically controlled wastegate, whereas the 04.5+ have an electronic wastegate. Also like I stated before, the 03-04 are not as responsive on tuners as 04.5+, but when the 04.5+ reach 800-900hp they stall, there has not YET been an 04.5+ truck (325) that has reached 1000hp+ on #2 only. The 03-04s can and do, do it. Anything else just ask
Eric Brown 1138HP 2004 305/555
So it's false info that the 04.5's had more horsepower than the 03-04's? lol
Maybe I shouldn't have called it a high output version, but there is a difference in power ratings.
So it's false info that the 04.5's had more horsepower than the 03-04's?
I did not say that, the 04.5+ do have a higher factory HP and TQ rating, I was stating that the 04.5+ is not the HO for the CR in general it is a different series. In a sense I guess you could say it IS the HO CR, but..since the motor belongs to a diff series of CRs I do not see it that way, forgive me if I confused you
__________________ Dallas
Sold: 2004 Dodge Ram 2500 QCSB
Now: Big Bad £B7 Dually
No you didn't confuse me. I understand the difference between the versions. And I've seen Erick's truck firsthand, so I know what a 305 can be built to.
The point being, the OP wants to know what the difference is between an 04 and 04.5. And it's the factory power ratings - in addition to things you listed.
No you didn't confuse me. I understand the difference between the versions. And I've seen Erick's truck firsthand, so I know what a 305 can be built to.
The point being, the OP wants to know what the difference is between an 04 and 04.5. And it's the factory power ratings - in addition to things you listed.
I covered most of them, if he has anything else he can ask, I will do my best to answer.
Never met eric, but I have read alot about the rig, it is nasty, I hope the 6.7 and 5.9 end up dominating the 6.4s and Lmms, I heard there are some 6.7s getting past 800hp, is this true? If so w/o spray they are ahead of the 6.4L, but in Febs edition of DPM there is an LMM GMC that has 1200hp Pisses me off, I am a Diehard Cummins fan, and hate to see the LMM or any truck surpass it (cummins)
__________________ Dallas
Sold: 2004 Dodge Ram 2500 QCSB
Now: Big Bad £B7 Dually
2003 S.O. Federal Emissions: 250HP/460lb.ft. Available with NV4500 or 47RE
2003 S.O. Calif. Emissions: 235HP/460lb.ft. Available with NV4500 or 47RE
2003 H.O. Federal Emissions: 305HP/555lb.ft. Only available with NV5600
2003.5 The 47RE was replaced by the 48RE automatic transmission and available with the H.O.
2004 S.O. Calif. Emissions: 235HP/460lb.ft. Available with NV4500 or 48RE
2004 H.O. Federal Emissions: 305HP/555lb.ft. Available with either NV5600 or 48RE
2004.5 (50 state legal) 325HP/600lb.ft. Available with either the 48RE or NV5600
Now the question is, why is this in the 6.7 section??????
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2013 Ram 3500 Dually CTD 6.7/Aisin/4:10 LSD
Previous Rams: 90 CC Dually, 94 RC LB, 95 CC SB, 98 QC Dually, 00 QC Dually, 01 QC Off Road, 03 QC Dually, 05 QC Dually, 08 QC Dually, 10 CC Dually
I covered most of them, if he has anything else he can ask, I will do my best to answer.
Never met eric, but I have read alot about the rig, it is nasty, I hope the 6.7 and 5.9 end up dominating the 6.4s and Lmms, I heard there are some 6.7s getting past 800hp, is this true? If so w/o spray they are ahead of the 6.4L, but in Febs edition of DPM there is an LMM GMC that has 1200hp Pisses me off, I am a Diehard Cummins fan, and hate to see the LMM or any truck surpass it (cummins)
Back in 07 Erick and Reb took a Cab and Chassis 6.7 motor to 1080 hp and threw a rod through the block. That's when we discovered the first weak link in the internals - 6.7's need 12V rods when getting over 1000hp.
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Anything else just ask
Pisses me off, I am a Diehard Cummins fan, and hate to see the LMM or any truck surpass it (cummins) 
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