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Thread: Swap from charger 5.7 to 6.4

  1. #1
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    Swap from charger 5.7 to 6.4

    Hey, my car is a 2014 charger rt, i swapped my engine from a 5.7 to a 6.4 im trying to figure out what's the easiest way for me to convert my 5.7 tune to a stock 6.4 tune. do i have to copy parameters one by one, or i can just use a stock 6.4 tune from the repository.

    i need help, its a complete stock 6.4 engine, i also got the intake runners to work with an MSD switch so they open up at the same RPM as a stock 6.4.

    HELP

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    Even if you copy over all the parameters from a 6.4, I can tell you the 5.7 PCM will not report the correct cam angles as it is setup for a cam with an LSA of 114.25 not one with a 120.5 LSA. 5.7 PCM treats exhaust angle of 125 as full advance where a 6.4 treats it as ~135 so you will need to apply an offset of -10 degrees to all the VVT exhaust tables.
    https://forum.hptuners.com/showthrea...l=1#post587987

  3. #3
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    what if i just get a 6.4 PCM from the junkyard, i found one for a good price. would i be able to use it with my VIN and just program it with HP tuners ?

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    Not sure if it would work? I would also get an engine harness just to be on the safe side. Might even get the manifold valve to work?

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    regarding the manifold, i got the MSD switch to operate it. but in the future i might go that route with the wiring harness as well.

  6. #6
    PCM will work but you will need to program the vin and make a few changes with hptuners. harness shouldn't be needed.

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    So a 6.4 PCM running 6.4 OS can be programmed with a 5.7 vin?

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    Advanced Tuner coanan's Avatar
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    Quote Originally Posted by Homer View Post
    So a 6.4 PCM running 6.4 OS can be programmed with a 5.7 vin?
    Love to know this to and if there are any advantages?
    2013 Chrysler 300S, Stock 6.4 BGE with 6.4 SRT cam, AIT 18% OD pulley, E-force 2.62 pulley(12.2 lbs boost), fastman 84+4 mm throttle body, 1 7/8 kooks long tubes w/hi-flow cats, 3" Magnaflow Cat-back, FTI 2800 stall, Trans by Hellraiser, Dings Racing valve body and tune, Getrag 3.73, Walbro 400LPH, DW 65# inj. aluminum rad. SRT fans. Brembo upgrade. Stage one MOPAR springs, XIX X39 22x9 +15 - 22x10.5 +22 with NITTO NT555 265/35R22 - 295/30R22 going in: TSP boosted Stage 4 226/235 582/582 117+4

  9. #9
    Quote Originally Posted by homer View Post
    so a 6.4 pcm running 6.4 os can be programmed with a 5.7 vin?
    yes

  10. #10
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    Quote Originally Posted by Homer View Post
    So a 6.4 PCM running 6.4 OS can be programmed with a 5.7 vin?
    Absolutely. We have done plenty of 6.4 swaps and when engine comes with harness & PCM, we use it. Send 6.4 PCM for unlock and have them write new VIN.

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    Quote Originally Posted by allpargarage View Post
    Absolutely. We have done plenty of 6.4 swaps and when engine comes with harness & PCM, we use it. Send 6.4 PCM for unlock and have them write new VIN.
    I thought the witech stuff would somehow not allow it or the 5.7 BCM would have issues with the 6.4 PCM. I mean, if you look at the tune details in HP tuners it lists the vehicle info which I thought the BCM looks for as well. Thanks for confirming.
    Last edited by Homer; 10-24-2019 at 10:51 PM.

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    Quote Originally Posted by coanan View Post
    Love to know this to and if there are any advantages?
    One advantage I could think of would be the VVT values would not have to be offset. As I state before, the 5.7 PCM shows full cam advance with and exhaust angle of 125 deg where as a 6.4 PCM sees it as 135.

  13. #13
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    Quote Originally Posted by Homer View Post
    I thought the witech stuff would somehow not allow it or the 5.7 BCM would have issues with the 6.4 PCM. I mean, if you look at the tune details in HP tuners it lists the vehicle info which I thought the BCM looks for as well. Thanks for confirming.
    Just need to set table 13512 to 5.7 so ABS/ESP will be happy. If you leave as 6.4, ABS/ESP light stays on with DTC's for configuration mismatch and will disable.

    Big thanks to Hemituna!

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    What about flashing a 6.2 OS into a 5.7/6.4?

    Probably not since the PCM is a different part number I'm guessing.

  15. #15
    Advanced Tuner coanan's Avatar
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    Quote Originally Posted by Homer View Post
    One advantage I could think of would be the VVT values would not have to be offset. As I state before, the 5.7 PCM shows full cam advance with and exhaust angle of 125 deg where as a 6.4 PCM sees it as 135.
    Does it matter which vehicle it comes out of as long as it's 2011 to 2014 6.4? Where is it sent to have vin programmed in?

    I found refurbed on Flagship one for 187.00 with vin programmed in, lots of different p/n though. How do you which one is right?
    Last edited by coanan; 10-25-2019 at 07:00 PM.
    2013 Chrysler 300S, Stock 6.4 BGE with 6.4 SRT cam, AIT 18% OD pulley, E-force 2.62 pulley(12.2 lbs boost), fastman 84+4 mm throttle body, 1 7/8 kooks long tubes w/hi-flow cats, 3" Magnaflow Cat-back, FTI 2800 stall, Trans by Hellraiser, Dings Racing valve body and tune, Getrag 3.73, Walbro 400LPH, DW 65# inj. aluminum rad. SRT fans. Brembo upgrade. Stage one MOPAR springs, XIX X39 22x9 +15 - 22x10.5 +22 with NITTO NT555 265/35R22 - 295/30R22 going in: TSP boosted Stage 4 226/235 582/582 117+4

  16. #16
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    Quote Originally Posted by coanan View Post
    Does it matter which vehicle it comes out of as long as it's 2011 to 2014 6.4? Where is it sent to have vin programmed in?

    I found refurbed on Flagship one for 187.00 with vin programmed in, lots of different p/n though. How do you which one is right?
    Well we have Witech access to handle things like that. If the PCM is 2015+, we have HP write new VIN during unlock process.

  17. #17
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    yes, AJ and Hemi Tuner did it for me.
    it's a 6.4 PCM/OS with my VIN

    great guy to deal with.

  18. #18
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    Exactly,

    thats what happened when i first installed it and ran it. ABS/ESP was off.
    contacted hemituner and he told me to change the displacement value to 5.7 and bam worked like a charm

  19. #19
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    yes it matter, preferably you should send in your PCM cause of the part number and module number should match.
    what i did cause im oversea i gave AJ(Hemi Tuner) my VIN and he bought me a new PCM then flashed it for me with the 6.4 OS.

    never install a PCM thats not for your model or has different part numbers.