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Thread: 8hp or nag1 swop

  1. #1

    8hp or nag1 swop

    Looking into doing either the 8hp or nag1 swop into a 2016 5.7 m6 challenger project. What harness do I need .
    Thanks.

  2. #2
    Advanced Tuner rays04gtx's Avatar
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    I like the Nag1 myself, but the 8sp is the better way to go for a 2016, you don't have to retrofit anything, just need an 2016 A8 donor parts. is it a driver or Drag project ? driver the A8 is the way, pure drag car, you can't beat the 727 for power out put, the TH400 is what cam in the Drag pak cars, for good reason, we ran a 904 in my kids 2014 challenger drag car he sold that car and bought a new body in white from Ma mopar , going to start with a TH400 in this car, but this car is a roll off trailer get beat on , put back on trailer and go home car.
    62 Biscayne 425/409 SS/D stock class car 10.60s
    66 Dart 426CIG3 8.60@171 2750lbs Naturally asperated
    04 Ram All Alum , 468Ci G3 10.50s @4800 lbs Naturally asperated
    04 Rumble Bee, built 6.1 ,4000lbs 10.48 @ 129s MPH. Naturally asperated
    05 Rumble Stock 5.7, 3.92s TUNE ONLY 13.94@98mph

  3. #3
    Yep 400 or 727 is the way to go for strip only. This isn't my daily but drive when I can. It a pretty hard hitting 5.7 and shifting the m6 at 7200 is pretty much 50/50.
    I was thinking it should not that much of a big deal work wise. As i understand it the a8 has the controller on the valvebody and some of the NAG1 have it separate from the ECU. Just need to find out the wire harness from tcu be it the A8 or NAG1 to where it goes and if I have to make the harness work with the M6 and what the pin out and pin are.

  4. #4
    i got a nag1 with staged valve body and tq with a cooler and mtcm tuned by my self and the car have big power with NOS it run good i like the breath of the 5 speed