2012 Durango RT 392 Swap
Close
Login to Your Account
Dodge Durango Forum - Powered by vBulletin
Page 1 of 5 1 2 3 ... LastLast
Results 1 to 10 of 46
Like Tree7Likes

Thread: 2012 Durango RT 392 Swap

  1. #1
    Grasshopper
    Join Date
    Jun 2018
    Posts
    30
    Member #
    48618
    Liked
    8 times

    2012 Durango RT 392 Swap

    So I decided to bite the bullet and buy a 392 to put in my Durango R/T.

    Since mine is AWD, I have decided to remove the transfer case and put on the tail housing off the RWD model and because mine is a 2012, and the engine is out of a 2014 Challenger, I'll have to use my engine harness on the 6.4L.

    I've got the 5.7L pulled out, and the 6.4L will be here either tomorrow, or Tuesday, from Texas.

    I also have 3.45 rear-end gears, so I'll probably leave that alone for now, but I have talked with two torque converter shops that can supply me with a torque converter fairly cheap for my 65RFE ranging between 2800 and 3200 stall, but I've not made up my mind on where I want to stall, yet. Currently I stall at 2300, and that's just not going to work anymore. After the engine is installed, I'll be dealing with HemiFever for tuning.

    2012 Durango RT 392 Swap-img_20181007_123547.jpg

    2012 Durango RT 392 Swap-img_20181008_165950.jpg

    2012 Durango RT 392 Swap-img_63851_01.jpg

    2012 Durango RT 392 Swap-img_63861.jpg

    2012 Durango RT 392 Swap-img_20181012_190830.jpg
    ygbsm likes this.

  2. #2
    Grasshopper
    Join Date
    Jun 2018
    Posts
    30
    Member #
    48618
    Liked
    8 times
    Parts ordered from Luke at Steve White Motors, who is awesome by the way. I got Comp 274 cam, phaser lock, PSI spring kit, new non-MDS (hellcat) lifters, gaskets/seals, etc.
    Attachment 101958

    Springs installed.
    2012 Durango RT 392 Swap-img_20181212_162110.jpg

    Installing phaser lock.
    2012 Durango RT 392 Swap-img_20181214_011153.jpg

    Removed/Plugged MDS solenoids.
    2012 Durango RT 392 Swap-img_20181214_033552.jpg

    Back together, aside from the water pump, which is done now.
    2012 Durango RT 392 Swap-img_20181228_033747.jpg

    New 3000 stall converter, compliments of Tony at Total Transmission of Chicago.
    2012 Durango RT 392 Swap-img_20181230_231302.jpg

  3. #3
    Durango Jedi Don Fox's Avatar
    Join Date
    Sep 2004
    Location
    Oxford, Ohio
    Posts
    2,023
    Member #
    100
    Liked
    284 times
    Vehicle
    2004 Hemi SLT AWD Turned 100K Jan of '17. New engine September 2008 at 39K due to dropped valve.
    Interex:
    Looks like your project is coming along nicely. From reading your plan, I get that you are changing your D from AWD to RWD. Since you are in Texas, I imagine the AWD is unnecessary most of the time. Since you have the 5 speed trans, I think the 3.45 gear set will work out fine. Without the 8 speed trans, going much shorter gear wise will raise your cruising rpms quite a bit.

    Don
    2004 Durango SLT Hemi AWD "The Flame Red Rocket." ( 3/26/10 Cleveland, OH.)
    2014 Billet Silver Dodge Charger R/T Hemi AWD (10/27/16 Dundee, MI.)
    2011 Mineral Gray Hyundai Santa Fe GLS AWD V6 (hers) (8/21/14 Chattanooga, TN.)

    de N8ECH

  4. Remove Advertisements
    DodgeDurango.net
    Advertisements
     

  5. #4
    Grasshopper
    Join Date
    Jun 2018
    Posts
    30
    Member #
    48618
    Liked
    8 times
    So I've had a few setbacks, which definitely were not expected.

    1: The 6.4L (out of an automatic 2014 Challenger) had a pilot bushing in the end of the crankshaft. This prevented the torque converter from aligning and mating together. This really confused me. So I borrowed the bushing/bearing puller from AutoZone and welded a little lip on the bushing to grab onto it and pull it out.
    2012 Durango RT 392 Swap-img_20190102_235940.jpg

    2: The torque converter I received was for non-Hemi applications, such as the 5.2L, and 5.9L Magnums. It uses a 5/16 threaded torque converter bolt, whereas on the Hemi we use the M10 bolt. I contacted the place I got it and they're taking care of resolving the issue by sending out the correct converter on Monday.
    2012 Durango RT 392 Swap-img_20190103_224904.jpg

    3: While I did pre-measure some things before getting ready to install this engine in the Durango, I failed to make sure the exhaust manifold that came on my 6.4L would fit properly on the drivers side. Unfortunately it doesn't. It is literally sitting against the steering shaft and part of the tubular frame. So with that said, I contacted Steve White's and ordered a set of the Grand Cherokee SRT manifolds, studs, and gaskets to use in the Durango. Only cost me $350 delivered.
    2012 Durango RT 392 Swap-img_20190103_234358.jpg

    4: The transmission that I have in my Durango is the 645RFE (6 speed), which will mate up to the 6.4L SRT engine, however the lower structural cover used on the 5.7L Hemi will not bolt to the rear/bottom half of the 6.4L engine. This isn't a huge deal, but the lower four bell-housing bolts will not be usable in this configuration. I will ultimately have to get my local machine shop to manufacture a custom cover/adapter to get this to mount to the rear/bottom of the engine.

    So as of right now, we wait for the new GC SRT exhaust manifolds, and the correct torque converter to arrive and then try again. :P

  6. #5
    Durango Jedi
    Join Date
    Feb 2014
    Location
    Atlanta
    Posts
    3,875
    Member #
    3912
    Liked
    746 times
    Vehicle
    2014 Citadel Hemi, 2001 SLT+4.7L
    Mods
    4.7L HO cams, Fastman TB, Superchips, R/T rims, Street Scene front bumper cover
    Sweet.
    Didn't know you could use the 5.7 harness....but I guess the only thing that would not be connected is the intake and there is a way around that.

  7. #6
    Grasshopper
    Join Date
    Jun 2018
    Posts
    30
    Member #
    48618
    Liked
    8 times
    For the older model, such as the 2012, which has 4 smaller connectors on the ECM, you have to use the harness that was on the 5.7L. If you have a newer model that only has 2 large connectors on the ECM, you can actually use the harness from the 6.4L as it's independent of the vehicle and plugs right into the ECM.

    There is some information regarding the crank position sensor, and the tone ring on the crankshaft, the tooth count, etc, but so far the only thing I've been able to uncover is that I might have to use the CPS from the 5.7L and not the one from the 6.4L.

    Regardless, this all requires a custom tune to make it all work and run right.

    My next hurdle will be changing the rear differential. I though about swapping the one from the SRT Grand Cherokee to get me a 3.70:1 rear end gear, but it has eLSD, which the Durango doesn't have, so I'm not 100% sure it would even work. My next option would be to make tear apart the differential housing and swap the ring and pinion for the 3.90 ring/pinion from the SRT Challenger. I just haven't invested much time into the rear differentials in these vehicles. I'm sure with some good fab work I could even swap in the entire rear differential from a Challenger.
    Last edited by interex; 01-05-2019 at 08:17 PM.

  8. #7
    Grasshopper
    Join Date
    Jun 2018
    Posts
    30
    Member #
    48618
    Liked
    8 times
    New SRT manifolds are here.
    Attached Thumbnails Attached Thumbnails 2012 Durango RT 392 Swap-img_20190111_133454_1547239339063.jpg  

  9. #8
    Durango Jedi Master
    Join Date
    Jun 2004
    Location
    Fontana, CA
    Posts
    7,932
    Member #
    12
    Liked
    346 times
    I don't know what the balance situation is for the 392. The 5.2l and 5.9l engines use different convertors and flex plates as the engines are balanced differently, 55.2 is internally balanced and the 5.9 is externally balanced. Verify how the 392 is balanced and get the right convertor or you can damage the engine.
    Hanson front bumper, Kennesaw rear bumper, Ranch9000xl's w/ remote, Detroit Locker, lots of other goodies

  10. #9
    Grasshopper
    Join Date
    Jun 2018
    Posts
    30
    Member #
    48618
    Liked
    8 times
    What? That's not how things work. If the engine is internally balanced, and a torque converter and flexplate are manufactured correctly, they should be neutral, thus not affecting the balance of the engine. If the engine is externally balanced, the flexplate and damper will have weights added.
    Last edited by interex; 01-11-2019 at 03:52 PM.

  11. #10
    Durango Jedi
    Join Date
    Feb 2014
    Location
    Atlanta
    Posts
    3,875
    Member #
    3912
    Liked
    746 times
    Vehicle
    2014 Citadel Hemi, 2001 SLT+4.7L
    Mods
    4.7L HO cams, Fastman TB, Superchips, R/T rims, Street Scene front bumper cover
    Quote Originally Posted by interex View Post
    New SRT manifolds are here.
    Nice, can you take a picture of the collector?
    Wondering if there are 4 or 3 tubes.
    The older Jeep 6.1L SRT manifolds had just 3 due to the tight fit as compared to the LX 6.1L manifolds.

    On rear diffs. you also have the 3.45 option from the V6's.

Page 1 of 5 1 2 3 ... LastLast

Sponsored Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Similar Threads

  1. Charger Daytona 392 or Dodge Durango SRT
    By 392DurangoSRT in forum Durango SRT Discussions
    Replies: 20
    Last Post: 05-07-2018, 02:42 PM
  2. 2012 Durango RT Supercharged
    By 9096 in forum Durango Performance 2011+
    Replies: 4
    Last Post: 08-17-2015, 06:56 PM
  3. Install SRT 392
    By CMILLE39 in forum Durango Performance 2011+
    Replies: 0
    Last Post: 08-15-2015, 12:05 AM
  4. 2012 Headlight swap?
    By madd macky in forum Durango Accessories 2011+
    Replies: 7
    Last Post: 12-24-2014, 10:51 PM
  5. 2012 Headlight swap?
    By madd macky in forum Durango Appearance 2011 +
    Replies: 7
    Last Post: 12-24-2014, 10:51 PM

Tags for this Thread