AMW 392 (6.4) installation and experience

[Zachanadandy]

2025 Mojave delivered to AMW 12/23/25 Donations accepted

Apparently there is no NDA and it's not top secret pricing for everyone? Not a bad price for a full build including new engine, transmission, accessories, lift, wheels, tires, etc installed.

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[ChrisNLA]

Apparently there is no NDA and it's not top secret pricing for everyone? Not a bad price for a full build including new engine, transmission, accessories, lift, wheels, tires, etc installed.

Looks like I only need about $35K because I don't need/want a lift kit.

I mean. That's not happening but a guy can dream

 

[Zachanadandy]

Looks like I only need about $35K because I don't need/want a lift kit.

I mean. That's not happening but a guy can dream

Mine won't be for a few years but even the wife's on board when it's passed 100k miles that it is cheaper than buying a new truck. Of course I'll probably go 392 so it'll be $40k plus or minus.

 

[wuykats]

I see one of the items included in the package is a "High Flow Fuel Pump". Why would that be?

 

[ltdodge]

What kind of MPG are you seeing?

im getting 12.5 mpg. running 37s and 4.10 gears. i usually drive hwy 78 to 80 mph. the trasnmission stays in 8th gear most of the time

 

[ltdodge]

Is that an oiled K&N air filter? If so, is there an option for a regular paper filter that stops more than just the big chunks? As you can surmise, I am not a K&N filter fan.

its an S&B intake and filter, i guess similar to k&N

 

[ltdodge]

Apparently there is no NDA and it's not top secret pricing for everyone? Not a bad price for a full build including new engine, transmission, accessories, lift, wheels, tires, etc installed.

thats not a 392, thats the 5.7 engine he posted

 

[Darth Rubicon]

2025 Mojave delivered to AMW 12/23/25 Donations accepted

That’s actually a lot less than I imagined. Something to consider when I think I want a new vehicle again.

 

[Figmo]

2025 Mojave delivered to AMW 12/23/25 Donations accepted

What about your original engine/trans? You get to keep/sell that or they keep?

 

[MSFTMatt]

Im seeing a pretty steady 13.5 mpg, you?
[/QUOT

Im seeing a pretty steady 13.5 mpg, you?

Better then me, I’m around 12.5

 

[MSFTMatt]

im getting 12.5 mpg. running 37s and 4.10 gears. i usually drive hwy 78 to 80 mph. the trasnmission stays in 8th gear most of the time

That’s what I get, I need to swap

 

[JeepOfTheseus]

 

[ericw.]

What about your original engine/trans? You get to keep/sell that or they keep?

I'm also curious. Depending on mileage, someone could come out with their kidneys still in tact if they were able to recover some cost by selling a good motor and trans.

 

[Backcountry ADV]

I’m sure it’s a price I’ll never be able to pay but out of curiosity what was total cost of the swap? Same as their website or does that differ vehicle to vehicle?

Pricing isn't hidden. It's available everywhere. They're pretty straight forward to deal with as well. Dirt Cred (YouTube) also has a few recent vids on the newest 5.7 swap offering covering the build in detail and costs associated. They also have a discount code available for a small (couple grand) discount.

There are a few factors to consider on an individual basis such as discount for current drivetrain (based on mileage/condition), which package, what you're starting with as mods (i.e. if you're lifted on 37's or larger you may want/need to upgrade axles or other driveline components, Options you select, etc).

If you consider the investment on these "Turn Key" solutions from AMW it's typically because you "A" can swing it financially, "B" want/need it for towing or how you use your Jeep etc, "C" the increase in fun factor and driveability. If you look at these rigs with this conversion they are true marvels. They look, feel, and perform like Jeep SHOULD HAVE built them.

I'm looking at doing it this year as well. Currently having the same conversation on the (5.7 - 425 HP version vs 392 - 505 HP version). Fortunately we have quite a few members here that are posting and sharing their experiences. The value in that information is more important to me than the what each pays/paid for their set up. It's a large investment period. It's nice to see multiple posts and replies from those that have taken the plunge and are happy with the investment and outcomes.

Here's the link to AMW for all the Jeep Packages. If you happen to call, they're super chill and very helpful and happy to discuss all options.

https://amw4x4.com/collections/conversions/2020-2023-jeep-gladiator--jt--esr7586692

 

[Backcountry ADV]

2025 Mojave delivered to AMW 12/23/25 Donations accepted

Congrats first off. Super interested in your outcome. I've been inbetween the new 5.7 and 392 myself. Looking to take the plunge this year and just get it done! I'm torn between the extra output of the 505 package but also don't need to destroy driveline with extra torque/hp as I'm on 40's already with 5:13's and the stock Dana's. I did upgrade axles/cv shafts but don't want to jump to 1 ton's. However I love performance lol. Definitely keep up posted with your experience.

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