2005 ram 4.7 to 5.7 swap need help!

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Ram1991

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2005
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4.7
New here and to dodge.. Got my wife a 2005 ram 4.7 and it is junk! Really slow and horrible mpgs. What all do i need to do a hemi swap and what years work
 

SYKRAMMAN

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You're going to need money, time, patience, a wealth of electrical and mechanical knowledge, o and did i mention MONEY$$$$$$$$$$$$. Not to say it can't be done because it has, quite a few people have successfully completed the swap.

And:welcome:to the forum.
 
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Ram1991

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2005
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I just need to know what years work and what all I need from the donor truck
 

Ian_Olivas

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San Antonio,Tx
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2002
Engine
4.7L Magnum
I just need to know what years work and what all I need from the donor truck

03-05 all will work easiest but the newer one can go in too just more work. I've been doing research on this alot latly for a swap and Ive read everwhere 2005 is the best for tuning. Just get a 2005 doner truck and the wiring harness will plug directly into where you 4.7 wiring harness plugs into no issues. New motor mounts and new radiator. Not sure if the ac condenser needs swapping but the alternator and the ac compressor are flipped with the hemi's so you would need the ac lines from the hemi and probably the compressor and alternator I do not know if they are interchangeable, look up part numbers see if they match. The transmission you can use the 4.7 with the 5.7. Need the ecm and pcm for the 5.7. The 5.7 is an electric throttle body and the 4.7 is cable until 2008 so you'll need the box under the battery for the 5.7 that the cable will attach to for the electric throttle body, i do not know if there is a different cable lengthy so just take the 5.7 cable and swap it too so there's no issues. Oh I think the hemi used 2 fans on the ac condenser and I believe that's it. There might be more but I'm still researching
 
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ST-8

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There are guys that have done 5.7 swaps from 4.7 trucks(Dakota,ram) an I believe the 4.7 computer will run a 5.7. I know the 4.7 guys that done 5.7 swaps that still use the cable to setup. Dodgetalk prob has some acient threads on it
 

Ian_Olivas

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San Antonio,Tx
Ram Year
2002
Engine
4.7L Magnum
There are guys that have done 5.7 swaps from 4.7 trucks(Dakota,ram) an I believe the 4.7 computer will run a 5.7. I know the 4.7 guys that done 5.7 swaps that still use the cable to setup. Dodgetalk prob has some acient threads on it

Yeah but you need to tune the 4.7 ecm so just easier to take the ecm from the doner truck and also I need to find out how to do the fly by cable swap cause I prefer cable over wire on the tb's
 

Madoyster2003

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I just bought a bbk throttle body. Do an eBay search for bbk throttle cable 5.7

120858946838 eBay item number

They make an 87mm and 80mm
 
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