will a 2007 5.7 hemi work in place of a 2005 5.7 hemi

Yes, absolutely.

do you know if I would have to change out the ecm and the wiring harness?

I don't think you'll have any problem with using the existing wiring harness but the PCM should be reprogrammed for the correct VIN if you swap it, but you might be able to retain your old one. Everything should bolt right into place. Dodgetalk.com and Ramforum.com have dedicated threads to engine swaps for Dodge trucks. I don't see anything that would keep you from bolting the new engine right into place.

thank you

Cluke78 did you successfully change the engine? without any mod? i’d Love to know as i’m going to do the same and i can’t find much info on the net. please hit me up if you can or reply to this thread.

Is an 07 5.7 out of a truck the same as a. 5.7 out of a 05 dodge magnum

The 07 will have MDS as Dodge rams were introduced to the Multi displacement system in 2006 up i believe. The intake is different as you have 4 mds selonoids that needs to be blocked. the Valve cover will need to be changed and also the timing cover, not sure about the oil pan. The 2007 will bolt into place as my mechanic did it without any mods. i’m just waiting on the a starter and a valve cover and the engine blocker plastic tabs thing, i forgot the part number. We will then start it up using the ignition system from the 2005 as the computer will not read the 2007 ignition system that’s why we swapped the intake and the valve covers. I’ll let you guys know how it turns out and if it goes well. The 2007 engine was low mileage and cheaper than the 2004-2005 engine so that’s why i went with that.

Chris, I have a couple questions for you. Sounds like we're doing the same swap but wanna make sure. First off any luck? I'm swapping from a vin 2 to vin D motor in my 07. I've swapped the PCM and still can't get the truck to run right. Do I need to swap the wiring harness also for the motor. If anyone else has any input would appreciate the help

What bout 2004 and the 2007 having different coil packs ?

I have 2005 dodge 1500 Hemi 2007 engine would it fit n my truck or do I have to change the oil pin for it to work

I have a 2003 dodge ram 5.7 hemi that is blown will a 5.7 hemi out of a 2004 dodge Durango with same engine code interchange?

I have a dodge ram 06 hemi but I have a crystal 300 intake will the mass flow sensor work on it

I have a 06 charger hemi rt and was told the motor from 04-05 won’t work in it why??

Can a 5.7 hemi from a 2008 ram 1500 replace a 5.7 hemi in a 2009 ram 1500 with no problems?

Hi there i have a magnum 2005 5.7 hemi blowen could a 2015 motor work on my

I had a 2004 ram 1500 with a 5.7 hemi that lost it valve seats i then bought a 2005 dodge magnum engine and swapped magnum engine block and heads are the same. Ram parts that had to be re used: timing cover, valve covers, coils, intake and fly wheel. I did everything turned motor on runs but has missfire on multiple cylinders so im stupped tfying to figure out if timig is off camshaft or crank shaft sprokets maybe? Anyone?

I am building a 05 5.7 for my truck which is an 05 1500 with 4.7 in it now , i have the 5.7 wiring harness and i am mocking up the electrical system now on the engine stand , i have found differences in the wiring such as the new throttle body ( 92 mm ) is a three pin connector where as the old stock throttle body is a 6 pin connector and the coil packs (which were supposed to be 2005 and up MSD BLASTERS ) have a 3 pin connectors and the old coils are a two pin connectors ( which I have learnded the MSD coils are actually 2006 and up , all these i was told would work so just be aware and check your all your connectors for fitment before diving in !