4.7L to 5.7L HEMI Engine Swap - 2004 Dodge Ram

Here I explain how I swapped a 5.7L Hemi engine into my 2004 Dodge Ram 1500. I believe this is the first video created that covers all of the question marks. 35,000+ mile update coming someday... 0:18 shopping list 1:03 note on wire harness 1:30 note on motor mounts 2:28 Day 1 2:53 bellhousing bolts, torque converter bolts, and alignment pins 3:13 AC lines 4:58 Day 2 7:06 difference between 4.7 and 5.7 motor mounts shown 7:14 fuel line and evap line 8:41 setting the engine 10:24 reassembly 11:46 4.7 and 5.7 cruise control 12:03 throttle position sensor (TPS) 13:07 Day 3 13:48 Day 4 and Y-pipe 14:38 Day 5 and first start 15:23 exhaust welding 15:46 performance test (This is not a true representation of the power difference due to the 5.7 motor incorrectly being paired with the 4.7 torque converter. Now with the proper torque converter, RPMs are able to stay much lower during acceleration. Updated 06/19/26) IMPORTANT NOTES: ABS The ABS module was not in the video shopping list, but you will need it for cruise control to work in the 5.7L because they're a different part number from the 4.7L to 5.7L. Otherwise, cruise control will not work properly or at all. They look the same but if you take them apart you'll find the circuit boards are completely different. The 5.7L ABS module part number I used is P52121407AB. The ABS module communicates the vehicle speed to the PCM and tire size can be programmed with the right scan tool to correct speedometer accuracy if needed. I did a video on that scan tool here:    • Perfect scan tool for Chrysler/Dodge/Jeep?...   PCM The PCM part number I used is P56029161AB (other part numbers work but with programming changes in the ABS module for the speedometer and cruise control to work accurately). The PCM sets cruise control but requires input from the ABS module to do so. These two must work together. SKIM If you have SKIM, permanently remove the module BEFORE plugging in your new PCM. You won’t be writing your original 4.7L VIN to your new 5.7L PCM (which is needed to match the non-programmable ROM of the SKIM module) because it will trip the ABS & Brake dash lights with the “VIN Mismatch” code. 5.7L ABS modules will ONLY work with 5.7L PCM VINs. I suspect this is due to the 8th-digit “D” in a 5.7L VIN vs. the “N” in a 4.7L VIN. TORQUE CONVERTER I advise using a torque converter for the 5.7 engine. I can say from 35,000+ miles of experience that the 4.7 torque converter will work with the 5.7, but they do have different stall speed specs to handle the differences in power output. COMPATIBILITY Generally, compatible years are 2002-2003 | 2004-2005 | 2006-2009. DO NOT USE ELECTRONICS FROM INCOMPATIBLE YEARS! ALWAYS try to find the exact matching year. PERFORMANCE TEST (15:46) Since I still had the 4.7's torque converter in, this is NOT an accurate example of how the RPMs and speed should relate. With the proper 5.7 torque converter, your RPMs will stay much lower because both sides of torque converter fluid-couple together at lower RPMs. It's now very rare that I exceed 4000 RPMs. FACTORY SERVICE MANUALS / WIRE DIAGRAMS: 2002 - https://drive.google.com/file/d/11QEx... 2003 - https://drive.google.com/file/d/1CmzH... 2004 - https://drive.google.com/file/d/1WMaP... 2005 - https://drive.google.com/file/d/198XL... 2006 - https://drive.google.com/file/d/1bG0E... 2007, 2008, 2009 - I have yet to find Big thanks to my friends Liam and Nick for giving me a hand taking things apart and teaching me how to weld, and to my parents for giving me the space to work.