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Discussion Starter #1 (Edited)
I wasn't sure which forum to put this under, but I figured it may be something some non-Hemi guys would want to know about.

So I started off and was planning on fixing my 4.7, but when I opened her up I found the following

Fixable, but to me not worth it, because at the end of the day I would still have an engine no better than when I first got this truck.

So, the next step was today:

Today was supposed to be the day I shoehorned in the 5.7 as well, however for some reason a shadetree mechanic with all hand tools is able to get a motor out of a vehicle in 4 hours, but the professional shop with someone who is paid to remove the motor needs 48 hours to do it.:4-dontknow:
So, here it is.


My next update will probably be next week as, well... I don't have a lot of time to work on the truck.

Of course if I have put this in the wrong place, please feel free to move it.

A couple of things for those planning the swap:
The vehicle is an 04 Dodge Ram 1500, and the engine I am putting in is out of an 05. I am swapping the engine, wiring harness, and computer. As things come up, of course(as they probably will) I'll have to swap more. For ease of access to the wiring harness for swapping, I went ahead and pulled the engine and trans together.
 

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Discussion Starter #4 (Edited)
Best choice of year to switch to for programming.
That was part of the reasoning behind going with the 05. Though nearly any vin code D would work, however some places don't pay attention when you say you need a VIN code D Hemi. I was going to go with an 04 so I could know it would work with my truck, but 04 and 05 are similar enough that the wiring harnesses should work well. I don't think I'll have the problems the 02 guys had where I would need the wiring harness and body wiring to get it working(or figuring out other internal wiring). Fortunately for me, I had the 4 plug computer anyway, so no TCM. I know the 04 could have either the 4 plug or 3 plug with separate TCM.

I am thinking that I may have to redo the lines for the AC, and possibly get a new radiator. Though admittedly I am half tempted to do that anyway as radiators are relatively cheap and I live in Phoenix, AZ where temps get up to 120-125(on occasion upwards of 130, which the news never reports accurately, but the anually calibrated thermometer doesn't lie). Last thing I want is an overheating engine. Obviously hoses as well, but that's a given.

If this works out well, next project is stuffing a hemi in my girlfriend's sebring :naughty: Just kidding... Gonna go for the V10
 

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Discussion Starter #7
I promised an update this week, so here it is:
I got my motor, mated it up with the trans, and shoehorned it in.

Couple problems though:
1) Going from 04 to 05 was not as simple as I had thought. The underhood harnesses are different for 04 and 05. The harness plug does not match up to the 04. So for those wanting to do the swap, you might want to stick to the same year.




2) The alternator, and AC Compressor do not match up. Kind of a bummer for me, I spent a bit of extra time wiggling around the compressor lines so I didn't have to evac the system, but in the end I'm going to have to do it anyway. So for those that want to do it, just go ahead and evac and remove the compressor.
(sorry no pics of that)
3) Motor mounts: First off, this thing came out of a wrecked truck, so the driver side mount was completely trashed and removed, and the passenger side will be removed, but I took a pic to show that it doesn't quite line up with the mounts on the truck. I thought the 4.7 mounts might be useful, but they don't line up with the HEMI.


I'm not sure if the 05 and the 04 used different mounts for the HEMI, so I'm going to look for the mounts.

And finally, the place that I got my engine from said they had the computer. Then when I went to pick it up, they apparently didn't have either the computer, throttle body, or the MAF sensor(grumble grumble complain). But they did have the wiring harness in tact, so I guess I can thank them for that(usually they just sawzall through it to get it out in a hurry).

So far in this project I'm up to 15 swear words used.
 

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Discussion Starter #10
No, a 2002 Ram that had a 4.7 turned into a stealth SRT-10.
Yeah, I was kidding. I kinda figured it was a Ram 4.7 to V10. Forgot the smiley.

Easier to do than putting a RWD engine and trans into a FWD car. That would be tough. Might be easier to build a race car than to build that.
 

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Discussion Starter #12 (Edited)
I haven't forgotten this. It's just been a pain finding the RIGHT wiring harnesses.
I got the 2004 harness, and whadya know... Not matching up... The second plug from the motor to the underhood/headlight wiring harness doesn't connect to anything... Why couldn't Dodge use ONE FRIGGING HARNESS FOR THE 5.7 HEMI! There are at least 4 of them for 04 alone. I know because I got two part numbers, and this one is neither. And I called another boneyard, and they have a completely different frigging number altogether.

For reference the 2 wheel drive with 4 wheel antilock brakes part number is 56051224AE. the 2 wheel drive with rear antilock brakes only is 56000993AF

Oh and there is no way in heck I'm buying that part from Dodge. $2190 from Dodge.

Future reference:
GET THE VIN NUMBERS!
Dodge needs it to find out what the correct wiring parts are... For now, I'm going to go and get a gun for my truck... ugh...
 

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Sorry to hear of the stress this swap is causing you! Hang in there, it will be worth it when you are done.

My 4.7 03 is a stick with only 30k on it, but it would be real nice to have the 5.7.
 

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Discussion Starter #14
Okay, in the event that someone is still looking at this...

This weekend I finally got the wiring harnesses I needed. Just a head's up for anyone attempting this in the future. Get the wiring harness for the project before hand. You will need two.

One is the Engine harness, and the other is called the "Headlight to dash" wiring harness. Don't bother getting one without the other. Trying to match them up is a bit of a headache. And by that I mean you will drive yourself absolutely bonkers because the part numbers will be one digit off, and that digit will mean the difference between a working harness and screaming obscenities at the vehicle. When you find the engine harness, ask if they have the headlight to dash harness. If they say no, go on to the next one. If you try to get one new, it'll run you between 1400 and 2400 depending on where you go and which harness you need.

I'd actually recommend getting the harness FIRST. Simple reason, It's easier to install the matching harness while the engine and trans are out of the vehicle.

Ed, I'd say that might be easier, except they might have had several transmissions. And it seems that it was easier to find engine harnesses for the auto.
 

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I read on another forum that someone had successfully swapped a 5.7 into a 4.7 truck using the 4.7 computer and harness. Apparently he found a way to splice the wiring on the hemi to the 4.7 harness and avoided all the headache of changing ecms and harnesses. The guy claims the hemi ran decent on a superchips performance tune for the 4.7, and then ran really good once he switched to SCT tuning. If this is all true, I may be reconsidering this swap some day down the road because I do not have the patience to go through all the problems you are having, haha.
 

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Discussion Starter #16
Today wasn't too terrible. Got a load of parts in.

Throttle body
Throttle control
ECM
Post Cat O2 sensors
intake
IAT sensor(because I was stupid and accidentally threw my old one out)
Fuel line. Yes, you have to switch the fuel line(sorta) because the 4.7 and 5.7 use different engine side connectors.

Tried starting it.
Sputtered to life, died.
Start again.... Sputter... die...
Gotta replace my power steering pump pulley to get the serpentine on it, maybe that has something to do with it, but really... not sure on this one...
probably have to get the exhaust done before it'll work.
 

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Today wasn't too terrible. Got a load of parts in.

Throttle body
Throttle control
ECM
Post Cat O2 sensors
intake
IAT sensor(because I was stupid and accidentally threw my old one out)
Fuel line. Yes, you have to switch the fuel line(sorta) because the 4.7 and 5.7 use different engine side connectors.

Tried starting it.
Sputtered to life, died.
Start again.... Sputter... die...
Gotta replace my power steering pump pulley to get the serpentine on it, maybe that has something to do with it, but really... not sure on this one...
probably have to get the exhaust done before it'll work.
Nice progress Tommy, you are getting there. I bet you are really looking forward to driving it!
 

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Discussion Starter #18
Nice progress Tommy, you are getting there. I bet you are really looking forward to driving it!
Yeah, now it's all put together, and just getting reprogrammed at a shop(simply because I don't want to spend the $500+ on the software to readjust the vin and calibrate it). Pretty well ready to go now. Future reference, for anyone else planning on the swap. DON'T! Seriously. I did it as an experiment. And I think it's convinced me to hate Dodge. 04 is probably the ABSOLUTE WORST year to pick to do this. Just swap in a 4.7 and sell the thing. Then get what you really wanted.
 

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Yeah, now it's all put together, and just getting reprogrammed at a shop(simply because I don't want to spend the $500+ on the software to readjust the vin and calibrate it). Pretty well ready to go now. Future reference, for anyone else planning on the swap. DON'T! Seriously. I did it as an experiment. And I think it's convinced me to hate Dodge. 04 is probably the ABSOLUTE WORST year to pick to do this. Just swap in a 4.7 and sell the thing. Then get what you really wanted.
Shucks, I was hoping to talk you into doing it for me.


j/k


A year from now the wounds will have healed, the pain will have subsided, and you will have the Hemi truck at your call.
 

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Discussion Starter #20
Shucks, I was hoping to talk you into doing it for me.


j/k


A year from now the wounds will have healed, the pain will have subsided, and you will have the Hemi truck at your call.
Oh sure, I'll do yours up. But here's what I'll need. All the parts I listed here, as well as a room for me at Lakeshore. Preferably something with a view :D

Do yourself a favor, get the engine and headlight to dash wiring harness outta an 03 Dodge Ram 2500 with the manual transmission. The 1500 only had an auto with the 5.7 Only the 3.7 and 4.7 had manual trans in the 1500... weird I know... But that's Dodge for ya. Oh and while you're at it, you may want to get the fuel line... Actually if you can get a wrecked Dodge Ram 2500 manual trans truck with the hemi and take the parts you need from that... trust me you'll be happier to have everything there...
 
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