Hawksurgent
Junior Member
Hello, all, first-time poster, long-time viewer. After lots of conflicting information and taking a risk, I have completed a 5th-gen 2022 engine swap into my 2015 Ram 1500, as well as a 2022 transmission swap, and going from a BW 44-44 to 44-45, and everything is fully functional, no codes, and passes emissions inspection. I wanted to post the information I was unable to find to help the next guy.
The story, I've had my 2015 Ram 1500 for around 5 years, got it around 152,00, and made it to around 170ish before it needed lifters, replaced lifters, and drove worry-free other than a water pump and wheel bearings until 311,000. I do a lot of driving. Between 300 and 310, I started experiencing transmission issues, hard shifting, slamming, odd shift patterns, changed fluids, checked code, and nothing but slowly got worse, the engine also slowly started ticking worse and worse, checked upper vvt sensor saw metal shavings, never got a code but by around 310 with the radio blarring going 70 the ticking was very noticeable. Also had a long battle going on with the bw 44-44 and not locking up in 4 high leaving me stuck, So after pricing out the parts and all that would be required to rebuild the engine, transmission, and transfer case, then a new truck, I decided to go with option 3 put a slighlty used newer driveline in it, half the price of rebuilding each part individually.
The solution: sourced a 5th-gen 5.7 HEMI NON E TOURQUE with 40k miles and three oil changes done, a 22 classic 8hp70 with 42k miles, and a BW 44-45 transfer case with 42k miles. I was previously a technician and have swapped a few engines; there are plenty of great tutorials out there for doing that, and I'm not going to go into detail with that. I am mainly focusing on what needs to be changed and what works with what.
Engine: requirements non e torque, 8 digit in the vin needs to be T, needs to come from a ram 1500, (others will work but front cover will need to be swapped, camshafts are different, and a few other sensors are different 1500 to 1500 is far easier.). Encoder form 2013 to 2022 is all the same part number, 58 tooth taller height, 2009 to 2012 was 58 tooth shorter depth. As far as the rest of the engine from 2013 to 2022 the internalls are all identical bar a few minor upgrades for longetivity but sensor and computer wise the same. 4th gen to 5th gen also got an oil cooler, new sensor package, different exhaust manifolds, and the 8hp75. So to swap a 5th gen motor into a 4th gen upon receiving motor the wiring harness needs to be removed, the lower knocks sensor, the oil tempature and pressure sensor needs to be removed, exhaust manifolds, as well as the evap and pcv lines. Everything else can stay. including the intake manifold in its enterity, injectors, sensors and all. Install the old knocks sensors, oil tempature and pressure sensors, emmisions hoses from old engine, exhaust manifolds, and old wiring harness, new harness WILL NOT WORK. now the engine is readdy to go in. Once in and fully hooked up either with witech or alpha obd, run the new engine program, relearn throttle body, reset all adaptations and update pcm if using witech. Prime the fuel system by turning the ignition on and off for 15 seconds 2 to 3 times and it should fire right up.
Engine cooling: the oil cooler can be deleted by swapping your old threadded oil filter pipe on or you can keep the oil cooler and delete the 3 way valve by updating to all 5th gen hoses, I choose the latter and it works great.
Transmsion: Requirements 8hp70 from a ram 1500 classic 4x4 if you had a 4x4, Tried really hard to make an 8hp75 work and no luck communicating with pcm. Also you will need to swap your old tcm into the new transmission!!! the valve body can easily be seperated from the tcm on the bench. I tried every way with the new tcm before swapping the old one in and never got it out of limp mode, don't make my mistake. To be clear I have witech 2 and programed my vin to the tcm, updated the firmware in the process, reset adaptations, updated pcm to accept new software and had full cuminactions and limp mode from a 10 milisecond delay on the can chanel in the tcm. Then switched to alpha obd and tried learn cycles, their vin write and no luck just swap it dont waste your time. To be clear just swap the tcm aka motherboard ontop of the valve body, so its still a like new transmsion just with an old brain in it. After swapping tcm over and powering truck on just reset all adaptions in the tcm and it will handle the rest.
Transfer case: Bw 44-45 new case previously bw44-44 with the auto button, any 2014 to 2018 or up to 22 classic 44-45 will do the trick, you can use your old actuator, motor bolted to ther top of the transfer case, or the new one doesnt matter. will bolt in and plug in exactly as the bw 44-44 did, no external differences in the two cases besided stamp, once truck is turned on witech 2 will be no help here, alpha obd will though just switch to the 44-46 option, someone else on the fourm did a really great write up that goes into detail on the specifics in alpha obd, I then used witech 2 to confirm change, did a calibration as 44-45 to be safe tested on the lift before driving and it worked, just make sure your front driveshaft free spins in 2wd if it doesnt you messed something up, The 4wd buttons inside do not have to be changed however it is recomended, I ordered a new pair and did the swap before they came, if you dont swap the buttons your 4wd auto button basically just becomes a fidget toy pressing it wont do anything and wont light up but the other buttons work as they should
Ive put around 3k miles on it since the swap and it feels like a new truck everything works great, I no longer have to air down due to the new transfer case, and it shifts like butter. I am happy to answer any questions for anybody else wanting to do any or all of these swaps. Also for any 3rd gen owners out there the 5th gen motor can be swapped with a few extra steps minus the transfer case and transmision of course. If this is posted in the wrong section please advise. I can include more picture if desired and go into more detail if requested.
Thanks for readding,
The story, I've had my 2015 Ram 1500 for around 5 years, got it around 152,00, and made it to around 170ish before it needed lifters, replaced lifters, and drove worry-free other than a water pump and wheel bearings until 311,000. I do a lot of driving. Between 300 and 310, I started experiencing transmission issues, hard shifting, slamming, odd shift patterns, changed fluids, checked code, and nothing but slowly got worse, the engine also slowly started ticking worse and worse, checked upper vvt sensor saw metal shavings, never got a code but by around 310 with the radio blarring going 70 the ticking was very noticeable. Also had a long battle going on with the bw 44-44 and not locking up in 4 high leaving me stuck, So after pricing out the parts and all that would be required to rebuild the engine, transmission, and transfer case, then a new truck, I decided to go with option 3 put a slighlty used newer driveline in it, half the price of rebuilding each part individually.
The solution: sourced a 5th-gen 5.7 HEMI NON E TOURQUE with 40k miles and three oil changes done, a 22 classic 8hp70 with 42k miles, and a BW 44-45 transfer case with 42k miles. I was previously a technician and have swapped a few engines; there are plenty of great tutorials out there for doing that, and I'm not going to go into detail with that. I am mainly focusing on what needs to be changed and what works with what.
Engine: requirements non e torque, 8 digit in the vin needs to be T, needs to come from a ram 1500, (others will work but front cover will need to be swapped, camshafts are different, and a few other sensors are different 1500 to 1500 is far easier.). Encoder form 2013 to 2022 is all the same part number, 58 tooth taller height, 2009 to 2012 was 58 tooth shorter depth. As far as the rest of the engine from 2013 to 2022 the internalls are all identical bar a few minor upgrades for longetivity but sensor and computer wise the same. 4th gen to 5th gen also got an oil cooler, new sensor package, different exhaust manifolds, and the 8hp75. So to swap a 5th gen motor into a 4th gen upon receiving motor the wiring harness needs to be removed, the lower knocks sensor, the oil tempature and pressure sensor needs to be removed, exhaust manifolds, as well as the evap and pcv lines. Everything else can stay. including the intake manifold in its enterity, injectors, sensors and all. Install the old knocks sensors, oil tempature and pressure sensors, emmisions hoses from old engine, exhaust manifolds, and old wiring harness, new harness WILL NOT WORK. now the engine is readdy to go in. Once in and fully hooked up either with witech or alpha obd, run the new engine program, relearn throttle body, reset all adaptations and update pcm if using witech. Prime the fuel system by turning the ignition on and off for 15 seconds 2 to 3 times and it should fire right up.
Engine cooling: the oil cooler can be deleted by swapping your old threadded oil filter pipe on or you can keep the oil cooler and delete the 3 way valve by updating to all 5th gen hoses, I choose the latter and it works great.
Transmsion: Requirements 8hp70 from a ram 1500 classic 4x4 if you had a 4x4, Tried really hard to make an 8hp75 work and no luck communicating with pcm. Also you will need to swap your old tcm into the new transmission!!! the valve body can easily be seperated from the tcm on the bench. I tried every way with the new tcm before swapping the old one in and never got it out of limp mode, don't make my mistake. To be clear I have witech 2 and programed my vin to the tcm, updated the firmware in the process, reset adaptations, updated pcm to accept new software and had full cuminactions and limp mode from a 10 milisecond delay on the can chanel in the tcm. Then switched to alpha obd and tried learn cycles, their vin write and no luck just swap it dont waste your time. To be clear just swap the tcm aka motherboard ontop of the valve body, so its still a like new transmsion just with an old brain in it. After swapping tcm over and powering truck on just reset all adaptions in the tcm and it will handle the rest.
Transfer case: Bw 44-45 new case previously bw44-44 with the auto button, any 2014 to 2018 or up to 22 classic 44-45 will do the trick, you can use your old actuator, motor bolted to ther top of the transfer case, or the new one doesnt matter. will bolt in and plug in exactly as the bw 44-44 did, no external differences in the two cases besided stamp, once truck is turned on witech 2 will be no help here, alpha obd will though just switch to the 44-46 option, someone else on the fourm did a really great write up that goes into detail on the specifics in alpha obd, I then used witech 2 to confirm change, did a calibration as 44-45 to be safe tested on the lift before driving and it worked, just make sure your front driveshaft free spins in 2wd if it doesnt you messed something up, The 4wd buttons inside do not have to be changed however it is recomended, I ordered a new pair and did the swap before they came, if you dont swap the buttons your 4wd auto button basically just becomes a fidget toy pressing it wont do anything and wont light up but the other buttons work as they should
Ive put around 3k miles on it since the swap and it feels like a new truck everything works great, I no longer have to air down due to the new transfer case, and it shifts like butter. I am happy to answer any questions for anybody else wanting to do any or all of these swaps. Also for any 3rd gen owners out there the 5th gen motor can be swapped with a few extra steps minus the transfer case and transmision of course. If this is posted in the wrong section please advise. I can include more picture if desired and go into more detail if requested.
Thanks for readding,
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