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04.5 went to the high output version.
Posts by CO6.7Cummins
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March's Cummins of the Month challenge is now open for entries!
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So it's false info that the 04.5's had more horsepower than the 03-04's? lolFalse 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.:thumbsup: Anything else just ask
Eric Brown 1138HP 2004 305/555
Maybe I shouldn't have called it a high output version, but there is a difference in power ratings.
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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.
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.
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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.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 1200hpPisses me off, I am a Diehard Cummins fan, and hate to see the LMM or any truck surpass it (cummins)
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$10 says the 6.7 . . . watch lol
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You sure about that? lol
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So who wins the bet? lol
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Also, this has nothing to do with the motor, but the seats in my 04 SUCKED compared to the 05 and up.
So if you can find an 05, the seats are more comfortable.
So if you can find an 05, the seats are more comfortable.
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hahaha, I know I sound like a chick bringing the seats up, but it took my back about 3 months to get used to them. They just don't support the way the later seats do. Which, if you drive it everyday, you'll notice.
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