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04 ram 1500 hemi to cummins swap

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Old 06-28-2013, 03:52 PM
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Default 04 ram 1500 hemi to cummins swap

Hey guys I'm new here and this is the first truck forum I've ever joined. Im looking at swapping out my hemi for a 24valve 5.9L CR Cummins. Now i know that people are gonna say, its not worth it, trade it for a 2500 cummins and that its labor intensive, cost alot, and time consuming. Well labor intensive and time consuming are not my issues. ive already done alot of research and the most cost effective way that i can see going about doing this is by finding a wrecked or police impound auction 2500 ram thats the same year and just taking everything out that i need for the donor truck (engine, computer, wiring, fuel tank, exhaust, tranny, and if the front suspension is intact then im going to replace my front suspension but i would like to keep my independent suspension, im not a fan of solid front axle. the dodge i have right now is a 2004.5 dodge ram 1500 4x4 slt with the offroad package, it has 130k miles on it and no major powertrain repairs or issues have happened. im and I would be doing all the labor myself, yes im young but i have alot of expirence with this truck. my father has the same year dodge as mine with the same engine but his is a 2500 with almost 300k miles on it, i rebuilt his engine by myself when i was 17 and the only instruction i had was youtube and a chiltons manual. it took me about a month but i did manage to do it and the engine had no problems. what im asking is, does anybody know anyone that has done this or done it themselves that can give me some guidance on this project? i would appreciate it if people that thing it is a waste of time or not worth it please just not post. thanks
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  #2  
Old 06-28-2013, 04:06 PM
dodge dude94 dodge dude94 is offline
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Besides the major work swapping this over, the 1500 frame is almost totally different compared to the 2500 and is weaker up front as it was not designed to have almost 1000lbs hanging off it.
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Old 06-28-2013, 05:29 PM
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Originally Posted by dodge dude94 View Post
Besides the major work swapping this over, the 1500 frame is almost totally different compared to the 2500 and is weaker up front as it was not designed to have almost 1000lbs hanging off it.
actually the only real difference between the 1500 and the 2500 are the suspension components. the 2500's have heavier duty suspension, and the mounts have to be the same or close to the same. My dad has an 04 2500 with a hemi in it, mine is an 04 1500 with a hemi in it. his truck could have been ordered from the factory with the 24v 5.9 CR cummins. which makes me think that, since both frames are the same dimensions (i have crawled under both trucks and measured all the dimensions of both frames... they are the same but the 2500 might be thicker gauge steel) and because you can put the cummins in the 2500, why wont you be able to put it in the 1500? the hemi fully dressed is like 600 pounds i believe (try searching the internet for the weight and you wont get anywhere), i have a 350lb steel front bumper on my 1500 right now, thats about what a cummins weighs... so without the bumper, my suspension can support the engine. I'm not saying that your wrong, im just saying there's not enough information on it to prove your assumption.
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Old 06-28-2013, 05:56 PM
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Go for it.

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Old 06-28-2013, 07:25 PM
Gone Fishin Gone Fishin is offline
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Just a suggestion, you may want to check out the front suspension components from the 2500 versus the 1500 too. You'll want to change the entire drive train to handle the torque the 5.9 develops.
Good luck
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Old 06-28-2013, 07:33 PM
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Kepp your torsion bars there and place some struts where your shock goes. That will give you some extra capacity.
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Old 06-28-2013, 08:48 PM
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Originally Posted by Gone Fishin View Post
Just a suggestion, you may want to check out the front suspension components from the 2500 versus the 1500 too. You'll want to change the entire drive train to handle the torque the 5.9 develops.
Good luck
yea im probably gonna replace all of it except maybe the rear axle, i dont think that would matter would it?
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Old 06-28-2013, 08:50 PM
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Originally Posted by KasperR34 View Post
Kepp your torsion bars there and place some struts where your shock goes. That will give you some extra capacity.
instead of keeping my shocks, i was going to put in some coil over shocks. that would essentially accomplish the same thing right?
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Old 06-29-2013, 10:27 PM
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Type hemi to cummins swap into goodle search. There was someone on this forum a while back who did the swap and has some good info for you. I was interested in this because I want to build up a nice cummins in the future and would like to start with a 2500 hemi that I can get for cheap and restore it and throw in a cummins. But that is way down the road
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Old 06-30-2013, 02:32 AM
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He did a 12v Cummins into a 2002 to replace the 360 that blew. Played hell for months and months getting everything to work right.
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Old 06-30-2013, 02:07 PM
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There's been a TON of conversions in 1500's. Maybe not a ton, but there are a fair number.

Which engine? VP or CR? What transmission?
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Old 07-01-2013, 06:38 AM
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Originally Posted by scatpack_69 View Post
There's been a TON of conversions in 1500's. Maybe not a ton, but there are a fair number.

Which engine? VP or CR? What transmission?
Its gonna most likely be a 03-05 24v 5.9L CR and since I'm getting the engine and donor truck from either an auto salvage auction or police impound auction I was just going the transmission that was in the donor truck. Do you have any links to someone who has done this or something similar so I can sorta get a blueprint or outline on what exactly all this entails??
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Old 07-01-2013, 08:38 AM
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yes coil overs would work as well and now adays you can do conversions for anything, BUT sometimes there not all worth doing with the amount of time, work and hassle you might have to deal with....IMO i wouldnt even bother, but best of luck man, keep us updated
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Old 07-01-2013, 06:16 PM
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Found them:
http://dodgeforum.com/forum/3rd-gen-...-like-oem.html
http://dodgeforum.com/forum/3rd-gen-...d-changes.html
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Old 07-02-2013, 09:35 AM
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Quote:
Originally Posted by brandt.reuss View Post
actually the only real difference between the 1500 and the 2500 are the suspension components. the 2500's have heavier duty suspension, and the mounts have to be the same or close to the same. My dad has an 04 2500 with a hemi in it, mine is an 04 1500 with a hemi in it. his truck could have been ordered from the factory with the 24v 5.9 CR cummins. which makes me think that, since both frames are the same dimensions (i have crawled under both trucks and measured all the dimensions of both frames... they are the same but the 2500 might be thicker gauge steel) and because you can put the cummins in the 2500, why wont you be able to put it in the 1500? the hemi fully dressed is like 600 pounds i believe (try searching the internet for the weight and you wont get anywhere), i have a 350lb steel front bumper on my 1500 right now, thats about what a cummins weighs... so without the bumper, my suspension can support the engine. I'm not saying that your wrong, im just saying there's not enough information on it to prove your assumption.

The frame have the same dimensions but internally they are very different.

The 2500 frame has reinforcements inside that you cannot see unless you cut it along it's center-line and look in there.

This along with a heavy duty suspension allow for a higher GVWR and a heavy diesel engine to be put in there.

Sure this project is completely possible but I can almost promise that there will be some handling problems with all of that extra weight over the front axles.

Also going with independent suspension in the front will be nice, but you may end up breaking those OEM axles quite frequently due to the VERY significant increase in Torque, so you should consider at the very least upgrading the axles.

You will also need to change the entire drivetrain.... Transmission, Driveshaft, Rear Diff.....

You also need every single bit of wiring, and you should just double check that the truck didn't get a 24VDC conversion as some people end up doing that for whatever reason.

Overall I think it's a cool project, but personally I'd save my pennies and just buy a nice 2500 with a Cummins 5.9 and call it a day....

Oh and don't forget the PCM and you will need the programmed keys to match it as well.... GOOD LUCK! I can't wait to see how this comes out.
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Last edited by Izero; 07-02-2013 at 09:38 AM..
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Old 07-02-2013, 09:35 AM
 
 
 
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