If I blew my 5.7L I would definetly consider swapping a 6.4 if I can get the long block cheap enough although would rather prefer going with a 6.2 long block.Wow, I'm surprised that none of you would be willing to swap in a 6.4..... With that said, I'm in the process of doing just that with my 2013 5.7 6spd R/T..... I have a 2013 6.4 that I'm stroking to a 426 setup with boost. There are many reasons to keep the 2010 you have the most obvious is how easy it is to change gears in your vehicle vs the 15 and later models.... Maybe you like the styling of the 08-14 Cars. Either way the swap isn't hard at all, and using your vehicles current PCM so long as it is VVT capable (which 2010 5.7's are) makes it very easy...... I use HPT for tuning my vehicle so it's quite easy to copy/modify 6.4 settings into a 5.7 PCM. For me it is cheaper to swap out a 6.4 block than to buy another vehicle unless it is a Hellcat.
Yes the 5.7 PCM will work but then you have to offset the VVT tables as the 5.7 and 6.4 have different full advance baseline. I know this because I installed a 6.2 cam in a 5.7 and the PCM kept reading 125 for full advance but the cam is actually at 135. I had to offset all my tables by 10 degrees.you dont need to swap pcm, you simply reconfigure it with a later calibration and then tune using HP tuner software, its actually not a very difficult swap
For my 6.4 Swap my intentions are to take the tables I need/want from a 6.4 tune & Then modify what I need from a Hellcat tune, and go from there dialing in the car.Just remember those stock tunes were for a GPEC2A controller (2015 challengers). Pre-2015 used GPEC2 but only difference I have seen is the 2A has a few more tables available.
HP tuners has the tables available but are you sure the wiring exists? If it does there should be a white/tan stripe wire leading out of pin 8.What if you wanted to make the active exhaust functional? Which path would be better then?
My understanding is that my 2015 has the wiring already, so maybe swapping in pipes with the active exhaust valves and changing the PCM could mean that could be added as well?
I can't say for sure the wiring is there, not even sure where I heard that it was.HP tuners has the tables available but are you sure the wiring exists? If it does there should be a white/tan stripe wire leading out of pin 8.