5.7 hemi swap, 6.4 cam tuning

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01-14-2019
HemiTonjku

5.7 hemi swap, 6.4 cam tuning

Hey guys kinda a newbie here! I?m currently trying to finish up my 5.7 hemi swap in my 13 Jeep jku. I did an mds delete and added a 6.4 manual challenger vvt cam. I ordered a P5160105 mopar performance pcm that is unlocked! And was wondering if anyone had any info on where to start on tuning it before I fire it right up with a vvt 6.4 cam! I?m sure it would be okay to just start but don?t want to chance it! Didn?t know if anyone has ever done this time of tuning with this setup and was willing to help? Thanks!
09-20-2020
Duckfan1812

I just finished tuning a 5.7 charger with a 6.4 Intake, Injectors, and cam. Wasn't that bad honestly
01-13-2021
estl3an

would you please share it with us to do compare
01-14-2021
f.creek-ranch

I work on the swap and begin with vct sttings. Just copy the 6.4 vvt settings with rpm - this maybe the basic.
NN training value for cam.
Torque based values should be 5-10% more.
Shifting is 6.4 based.
Injector rescaling would be the next while logging.
01-18-2021
Viperdude1

Did you get anywhere with this?

Quote:

Originally Posted by HemiTonjku

Hey guys kinda a newbie here! I?m currently trying to finish up my 5.7 hemi swap in my 13 Jeep jku. I did an mds delete and added a 6.4 manual challenger vvt cam. I ordered a P5160105 mopar performance pcm that is unlocked! And was wondering if anyone had any info on where to start on tuning it before I fire it right up with a vvt 6.4 cam! I?m sure it would be okay to just start but don?t want to chance it! Didn?t know if anyone has ever done this time of tuning with this setup and was willing to help? Thanks!

I'm working on my 6.4 SRT as I replaced the CAM. Looking for as much info as I can get to assist with tuning.
Thanks!
Rich
01-20-2021
f.creek-ranch

Now Im not sure where to start with the spark table...

Is it a good idea to copy the spark table from the 6.4 non mds to get closer to the cam timing ?
07-03-2021
GaS Engines

No do not copy the 6.4L spark tables. Compression ratio and cylinder head CC's are different from the 5.7L. Its best to log the car your working on and adjust spark tables as needed.
07-05-2021
f.creek-ranch

Just to complete this thread....
Copy over the tables is not the best.
I use the rpm tables from the 6.4 but set the 5.7 values to the rpm bounds and complete it by myself.
I do this even with the VVT settings.
I corrected the WOT spark table by knock retard.