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View Full Version : First run with the Hemi swap.



BlakDak71
07-31-2017, 05:06 PM
Regular cab, no weight reduction, 2250 DA.
2016 6.4L 392 Hemi, T56, 3.92s, Caltracs. Nothing trick, no powershifts, no WOT box, factory tune.

Stock 17s up front, Bogarts with 28x10x15 Hoosiers in the rear and an extremely conservative launch.

60ft - 1.994
594ft - 7.749
1/8 mile - 8.255 @ 88.98
1/4 mile - 12.593 @ 109.92

Went 13.01@111 on April 2008 coded Goodyear 255s. lol

Osee
07-31-2017, 05:25 PM
Damn that's pretty stout! Do you have a thread on it? I've fallen off the radar for a bit.

BlakDak71
07-31-2017, 05:33 PM
nah i've only posted here like 3 times in the last 4 years. lol

GoFastGray
07-31-2017, 05:57 PM
Sweet! Do you have more mod plans for the hemi?

BlakDak71
07-31-2017, 06:02 PM
At some point. Right now I'm just gonna drive it though.

dak4700
07-31-2017, 06:34 PM
I would be very interested to see this. Engine bay, mounting, trans setup etc. Like a build thread or something. Im having a feeling my truck is gonna need a new engine, and still tossing around different ideas.

Adobedude
07-31-2017, 07:29 PM
Pics or it didn't happen.

BlakDak71
07-31-2017, 07:36 PM
Pics or it didn't happen.

What do people use to host images these days?

Adobedude
07-31-2017, 07:41 PM
Just load em up on the forum

Bowman24
07-31-2017, 08:33 PM
How difficult was the swap? There is a good chance I will be going down that road

niebs
07-31-2017, 10:04 PM
Very nice. So thats bone stock? Not too shabby. I have a 5.7 on the engine stand right now that im building for my dak. You should be able to shave a good amount off once shes dialed in. :rockwoot:

Adobedude
07-31-2017, 10:24 PM
Good info on Gen III Hemi builds on moparts.

BlakDak71
08-01-2017, 11:36 AM
I would be very interested to see this. Engine bay, mounting, trans setup etc. Like a build thread or something. Im having a feeling my truck is gonna need a new engine, and still tossing around different ideas.

2016 SRT 6.4, stock accessories. Frame trimmed for alternator clearance. Grand Cherokee SRT power steering pump and reservoir.
Ram SRT10 transmission, QuickTime small block Mopar bellhousing, 130 tooth McLeod flywheel, 10.5" clutch, stock Ram SRT10 shifter with modified Challenger SRT pistol grip shifter
Mopar 392 Crate kit. HHR fan, stock radiator. Walbro 255 pump. 6AN feed and return lines, Aeromotive A1000 fuel pressure regulator.
Schumacher engine mounts and oil pan. Milodon pickup for 5.7/6.1 cut and reclocked to fit 6.4 oil pump.
99+ brake booster for coil clearance. Tubular upper control arms for header clearance. Custom long tubes with 2" primaries into 3.5" slip on collectors. Auto Meter gauges.

Pretty simple setup, all things considered. Could be done a little cheaper with a 5.7 VVT motor and still using the Mopar stuff. Runs like a stock '16 Challenger. Doesn't get hot in traffic. 1900rpm at 80mph with 3.92 gears.

BlakDak71
08-01-2017, 11:37 AM
Very nice. So thats bone stock? Not too shabby. I have a 5.7 on the engine stand right now that im building for my dak. You should be able to shave a good amount off once shes dialed in. :rockwoot:

That's a bone stock 392. Original spark plugs and everything lol.

Ok, I lied, it's got a spectre air filter and long tubes. Other than that, it's stock.

niebs
08-01-2017, 10:47 PM
Very nice. This is the kick in the butt I needed to get back at mine. Stopped by a speed shop today to check their services. I need to get going on it :bored_work:.

TurboJoe62
08-01-2017, 11:48 PM
What long tubes? pics????
Nice combo, nice truck!!!

Osee
08-02-2017, 03:15 AM
What do people use to host images these days?

Imgur.com is the best image hosting website period.

Adobedude
08-02-2017, 01:34 PM
Just load them on the forum as an attachment...:dumbass234: :idunno:

BlakDak71
08-02-2017, 01:49 PM
14476
14477
14478
14479
14480

99dart
08-02-2017, 02:26 PM
Congrats on getting it done and running well!

BIGROB
08-02-2017, 06:22 PM
That Hemi looks like it belongs in there :biggthumpup:

wdh681
08-02-2017, 07:30 PM
That Hemi looks like it belongs in there :biggthumpup:

That's what the factory should of done when they axed the 360. Looks good. Impressive results.

BIGROB
08-02-2017, 07:43 PM
If Dakotas had gotten the Hemi 10 or 12 years ago they would have never died off.
I could have ignored the ugliness of the gen-4 and gen-5 if that thing had a Hemi!

slammedR/T
08-02-2017, 10:31 PM
I hate you right now, this is my next planned Dakota truck :fml:

Awesome job bud :biggthumpup:

niebs
08-02-2017, 10:41 PM
Perfect fit :rockwoot:

spawn_x
08-05-2017, 03:38 AM
If Dakotas had gotten the Hemi 10 or 12 years ago they would have never died off.
I could have ignored the ugliness of the gen-4 and gen-5 if that thing had a Hemi!

Not sure if you could get past the ugliness.. but yes they sure did fuck it up.


So OP - how much did this set you back if you don't mind? Smog inspection friendly? I can't imagine a 2016 392 being cheap.. what was the reason for doing this, versus a 360 build up for the same money?

That is badass though, props!

JDreamR/T
08-05-2017, 05:04 AM
This is too freaking killer. Any pics of your exhaust setup? Where'd you source the headers?

krs1r/t
08-05-2017, 11:42 AM
Nice job:rockwoot:

Duner
08-06-2017, 12:28 AM
Great job!
Keep the info coming on this.
We need more guys doing more things.

BlakDak71
08-07-2017, 11:33 AM
I've got about $10,500 total into the 392/T56 swap as best I can tell. That's everything I could remember, from tubular upper control arms to the 99-up brake booster, etc.

Everybody has done a 360. With the Hemi, it runs and drives like a stock Challenger, runs deep into the 12s, likely an 11 if I can drive it, and gets close to 25mpg on the expressway lol. It's just better. The technology is there, why not use it?

Otherwise, you wind up with the same 408, eddy headed, M1, spintech combo everybody else has.

Hugh Jassole
08-08-2017, 02:31 PM
how did you address all of the electronic & computer issues ?

BlakDak71
08-08-2017, 02:42 PM
I used the Mopar crate 392 kit and an AutoMeter cluster.

TheOtherDodge
09-21-2017, 03:51 PM
Does the AC/Heater work? All other functions of the Dakota work such as airbags, cruise control, etc?

BlakDak71
09-22-2017, 10:44 AM
Heater works, I do not have A/C hooked up. Might be a winter project. I'm not sure if the airbags work, the sensors and everything are still there so unless they go through the PCM I have to assume they work. Cruise control does not work because I have drive by wire. All the power accessories, radio, etc work.

TheOtherDodge
09-22-2017, 01:38 PM
Are you running the stock PCM along with the separate one for the new motor/trans?

BlakDak71
09-22-2017, 01:47 PM
Are you running the stock PCM along with the separate one for the new motor/trans?

The stock PCM and harness is long gone. The factory body control module or central timing module or whatever it's called is still there. I have a Mopar Performance crate PCM controlling the motor, and I have a manual trans.

TheOtherDodge
09-22-2017, 03:32 PM
Thanks for the info. I believe the AC runs through the PCM.

niebs
09-22-2017, 09:47 PM
Thanks for the info. I believe the AC runs through the PCM.

Easy enough to work around tho.

niebs
09-25-2017, 10:26 PM
Well look what came today! Looks like I can get started :biggthumpup:
14583

TurboJoe62
09-29-2017, 10:40 AM
Hoping to start work on a set of custom headers for mine. Any pics of what was done on yours would be a big help for routing ideas. Appreciate any pics/tips you could provide!

niebs
09-29-2017, 01:33 PM
Ive heard good things about the ebay headers. Might be worth picking up a set and use those to cut up. Do you plan normal down and back design?

BlakDak71
09-29-2017, 03:01 PM
It'll be different depending on the trans and bellhousing you use I would think. The driver's side is pretty tight to the steering shaft, and I needed tubular A arms to clear on the passenger side as well.

TurboJoe62
09-29-2017, 10:36 PM
Ive heard good things about the ebay headers. Might be worth picking up a set and use those to cut up. Do you plan normal down and back design?

Mine's a 4.7 so will have to be from scratch. Seeing some routing that clears would save some time in mock ups that don't work before figuring out one that works, then having to do it all over again on the other side, LOL. Even then mine uses the Quicktime bell for 5.7 I was looking at making them tri-y's to help keep more torque as well since 287ci. After a couple of "quick" looks that likely is going to make it too difficult to fit.

Siciliano15
10-03-2017, 06:29 PM
Sick combo! mid 12s and you can still do a cam and port the heads whenever you want. Low to Mid 12s on a 360 is basically maxed out without bottom end work.

BlakDak71
10-04-2017, 05:55 PM
Sick combo! mid 12s and you can still do a cam and port the heads whenever you want. Low to Mid 12s on a 360 is basically maxed out without bottom end work.

Thanks. I've got to go home and finish putting the trans back in tonight. I was having an issue with the clutch not fully disengaging when I would depress the pedal. I made a 1/8" spacer and put it behind the slave cylinder in hopes of it alleviating the issue. With a good launch and powershifting, along with some better air than the July heat, I'm hoping to snag an 11.9@113-114 with a stock 392 (headers) and out of the box Mopar tune - which is identical to the factory Challenger calibration, removing only torque management.

krs1r/t
10-04-2017, 11:26 PM
One of my favorite builds:biggthumpup:

Siciliano15
10-06-2017, 03:31 AM
Thanks. I've got to go home and finish putting the trans back in tonight. I was having an issue with the clutch not fully disengaging when I would depress the pedal. I made a 1/8" spacer and put it behind the slave cylinder in hopes of it alleviating the issue. With a good launch and powershifting, along with some better air than the July heat, I'm hoping to snag an 11.9@113-114 with a stock 392 (headers) and out of the box Mopar tune - which is identical to the factory Challenger calibration, removing only torque management.

be sure to take a video or something. that would be amazing to see. stock 392 running 11s. almost hellcat territory.

1FstHemi
11-21-2019, 05:28 PM
Thanks. I've got to go home and finish putting the trans back in tonight. I was having an issue with the clutch not fully disengaging when I would depress the pedal. I made a 1/8" spacer and put it behind the slave cylinder in hopes of it alleviating the issue. With a good launch and powershifting, along with some better air than the July heat, I'm hoping to snag an 11.9@113-114 with a stock 392 (headers) and out of the box Mopar tune - which is identical to the factory Challenger calibration, removing only torque management.

What headers did you use for your HEMI swap?

BlakDak71
11-21-2019, 05:37 PM
What headers did you use for your HEMI swap?


I had headers built locally. MotoFab out of Davisburg, MI.

1FstHemi
11-21-2019, 05:38 PM
I had headers built locally. MotoFab out of Davisburg, MI.

Ok, what size collectors and primaries did you go with?

BlakDak71
11-21-2019, 05:43 PM
Ok, what size collectors and primaries did you go with?

2" primaries, 3.5" collectors and dual 3" all the way back and out over the axle.

1FstHemi
11-21-2019, 05:46 PM
2" primaries, 3.5" collectors and dual 3" all the way back and out over the axle.

I know the passenger side is tight do you have any pictures also what did you use for upper control arms?

BlakDak71
11-21-2019, 06:08 PM
I don't have any pictures right off hand. I used tubular control arms from AirBagIt, but I wouldn't recommend them to anybody. Quality is shoddy at best. If I can source another control arm from somebody else, I'm going to go that route.

1FstHemi
11-21-2019, 06:10 PM
I don't have any pictures right off hand. I used tubular control arms from AirBagIt, but I wouldn't recommend them to anybody. Quality is shoddy at best. If I can source another control arm from somebody else, I'm going to go that route.

Ok thanks for the tip:biggthumpup:, and if you can I would like to see some pics if not that's cool. I will need some like you have for this 6.4 based 448 stroker to breathe.

nitroram33
11-21-2019, 08:21 PM
Richard is working on tubular uppers still...