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  1. #1
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    2014 5.7 AWD to 6.1 or 6.4 swap

    I have a 2014 Chrysler 300C 5.7 AWD John Varvatos Limited Edition that I would like to upgrade the engine in (currently it has. 5.7 with about 22k miles on it I plan to sell used). I had a 2008 Chrysler 300c SRT8 I sold months back and I dearly miss the way the 6.1 Hemi produced power (not to mention the 2008 NAG1 shift points were leaps and bounds better).

    I have done all the basic bolt ons and a canned tune on my 2014 but it still isn’t in The same realm of power of the 6.1. I’m aware the AWD fully loaded 300 us probably about 400lbs heavier than the SRT.

    So here’s what I want to do. I would like to swap in. 6.1 Hemi (not sure if this will work because of the lack of VVT and no MDS) and I’m pretty sure the AWD oil pan will work on the 6.1 block since the 6.1 and 5.7 have the same stroke. For those who don’t know the AWD Hemi oil pan has a half shaft that runs right through the middle of it and the front differential bolts directly to the oil pan.

    I’m also considering a 6.4 Hemi swap as it may be slightly easier because of the VVT and MDS (I’ve read this is a very straight forward swap). One thing I am concerned is the 6.4 has a longer stock stroke than the 5.7 and I am worried it may not clear the half shaft tunnel in the middle of the oil pan. Does anyone have any knowledge on this?

    I do not want to get rid of the AWD so that is not an option and the Borg Warner 44-40 transfer case is more than stout enough to handle 500hp at the wheels (I would be more than happy to have with 425 whp). I also have a Z Automotive Tazer so I can turn my AWD on and off and will without any other modifications for when I want to have fun.

    So will the 6.4 fit a 5.7 AWD oil pan with out damage?
    Last edited by bennyb747; 02-07-2020 at 11:59 PM.



  2. #2
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    I think money wise the 6.4 would be best bet. Also have you considered stroking the 5.7 to 392 cubes?

  3. #3
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  4. #4
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    Quote Originally Posted by Hemihackman View Post
    I think money wise the 6.4 would be best bet. Also have you considered stroking the 5.7 to 392 cubes?
    I don't really want to mess with trying to acquire all the parts to make it into a 6.4 when I can just buy a 6.4 crate engine. Also I kind of hate to tear into such a low mile engine when I can just sell it as is. I am still interested in the 6.1 but I'm worried the electronics may not be compatible.

  5. #5
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    I see your point on the 5.7. Then I would use a 6.4 to make things much easier. I have a old 5.7 non VVT and I wouldnt use a 6.4. I got a 6.1 and some day make a 426.
    Thanks bennyb747 thanked for this post

  6. #6
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    Between the shear weight of the 2014 300C over 5000 lbs with me in it likely it is orders of magnitude slower than my SRT8 was. Even with the mods it has to be at least 1-2 seconds slower. I don’t want a giant powerhouse of built up engine just something that can move this tank of a car adequately without it feeling like I am driving a Honda Accord. My SRT was in the high twelves 12.9ish on a 1/4, pretty sure the 2014 is lucky to break 15 seconds with it’s bolt ons (never actually timed it but it sure feels slow as dirt).

  7. #7
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    I am trying to upload a pic of the AWD oil pan but not sure it will let me.

    Nah it won’t allow me to upload it here is a link to it.

    2012-2014 Mopar Engine Oil Pan 4792973AD | Mopar Discounted Parts
    Last edited by bennyb747; 02-07-2020 at 10:13 PM.

  8. #8
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    Quote Originally Posted by bennyb747 View Post
    I have a 2014 Chrysler 300C 5.7 AWD John Varvatos Limited Edition that I would like to upgrade the engine in (currently it has. 5.7 with about 22k miles on it I plan to sell used). I had a 2008 Chrysler 300c SRT8 I sold months back and I dearly miss the way the 6.1 Hemi produced power (not to mention the 2008 NAG1 shift points were leaps and bounds better).

    I have done all the basic bolt ons and a canned tune on my 2014 but it still isn’t in The same realm of power of the 6.1. I’m aware the AWD fully loaded 300 us probably about 400lbs heavier than the SRT.

    So here’s what I want to do. I would like to swap in. 6.1 Hemi (not sure if this will work because of the lack of VVT and no MDS) and I’m pretty sure the AWD oil pan will work on the 6.1 block since the 6.1 and 5.7 have the same stroke. For those who don’t know the AWD Hemi oil pan has a half shaft that runs right through the middle of it and the front differential bolts directly to the oil pan.

    I’m also considering a 6.4 Hemi swap as it may be slightly easier because of the VVT and MDS (I’ve read this is a very straight forward swap). One thing I am concerned is the 6.4 has a longer stock stroke than the 5.7 and I am worried it may not clear the half shaft tunnel in the middle of the oil pan. Does anyone have any knowledge on this?

    I do not want to get rid of the AWD so that is not an option and the Borg Warner 44-40 transfer case is more than stout enough to handle 500hp at the wheels (I would be more than happy to have with 425 whp). I also have a Z Automotive Tazer so I can turn my AWD on and off and will without any other modifications for when I want to have fun.

    So will the 6.4 fit a 5.7 AWD oil pan with out damage?
    Save yourself a lot of headaches and go with the 6.4. I bolted up all my 5.7 accessories onto the 6.4.
    Last edited by coanan; 02-08-2020 at 11:42 AM.
    2013 Chrysler 300S, Stock 6.4 BGE with 6.4 SRT cam, AIT 18% OD pulley, E-force 2.62 pulley(12.2 lbs boost), fastman 84+4 mm throttle body, 1 7/8 kooks long tubes w/hi-flow cats, 3" Magnaflow Cat-back, FTI 2800 stall, Trans by Hellraiser, Dings Racing valve body and tune, Getrag 3.73, Walbro 400LPH, DW 65# inj. aluminum rad. SRT fans. Brembo upgrade. Stage one MOPAR springs, XIX X39 22x9 +15 - 22x10.5 +22 with NITTO NT555 265/35R22 - 295/30R22 going in: TSP boosted Stage 4 226/235 582/582 117+4

  9. #9
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    Quote Originally Posted by coanan View Post
    Save yourself a lot of headaches and go with the 6.4. I bolted up all my 5.7 accessories onto the 6.4.
    So you can verify the longer stroke on the 6.4 liter over the 5.7 and 6.1 won't come into contact with the oil pan?

  10. #10
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    Quote Originally Posted by bennyb747 View Post
    So you can verify the longer stroke on the 6.4 liter over the 5.7 and 6.1 won't come into contact with the oil pan?
    You might have me on that one, forgot the front drive goes through oil pan? Otherwise the 5.7/6.4 oil pans the same.
    2013 Chrysler 300S, Stock 6.4 BGE with 6.4 SRT cam, AIT 18% OD pulley, E-force 2.62 pulley(12.2 lbs boost), fastman 84+4 mm throttle body, 1 7/8 kooks long tubes w/hi-flow cats, 3" Magnaflow Cat-back, FTI 2800 stall, Trans by Hellraiser, Dings Racing valve body and tune, Getrag 3.73, Walbro 400LPH, DW 65# inj. aluminum rad. SRT fans. Brembo upgrade. Stage one MOPAR springs, XIX X39 22x9 +15 - 22x10.5 +22 with NITTO NT555 265/35R22 - 295/30R22 going in: TSP boosted Stage 4 226/235 582/582 117+4

  11. #11
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    Id assume the slight difference in stroke won’t matter with oil pan clearance. If it was me I’d look up oil pan GASKET part numbers and see if they’re the same or interchangeable from a AWD 5.7 to a RWD 5.7 or 6.4. The modern hemi oil pan gasket is like a one piece gasket and Windage tray. (Which covers the complete crankshaft rotating assembly to prevent oil splash-up) Basically, what I’m saying is, you’d have windage tray/gasket interference long before the crankshaft hit. I know all cars ‘05-‘08 could use one part number and trucks used a different one, don’t know if that’s the case still with the ‘09 and newer stuff.

    joe
    Last edited by joeboy; 02-08-2020 at 06:46 PM.

  12. #12
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    I suppose another simple way to figure it out is call one of the vendors and see if they have experience with 5.7 strokers in AWD vehicles... a 392 stroker would have a longer stroke than a stock 6.4, so if the stroker crank fits in the factory oil pan the 6.4 would for sure.
    Thanks bennyb747 thanked for this post

  13. #13
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    Quote Originally Posted by joeboy View Post
    Id assume the slight difference in stroke won’t matter with oil pan clearance. If it was me I’d look up oil pan GASKET part numbers and see if they’re the same or interchangeable from a AWD 5.7 to a RWD 5.7 or 6.4. The modern hemi oil pan gasket is like a one piece gasket and Windage tray. (Which covers the complete crankshaft rotating assembly to prevent oil splash-up) Basically, what I’m saying is, you’d have windage tray/gasket interference long before the crankshaft hit. I know all cars ‘05-‘08 could use one part number and trucks used a different one, don’t know if that’s the case still with the ‘09 and newer stuff.

    joe
    I looked into the part numbers and they are different from AWD to RWD it they look kind of the same. It appears the AWD oil pickup is also shaped differently. One other thing I forgot about is the starter on the AWD Hemi model is on the wrong side, but I’m pretty sure all the mounting points for it are on the transmission so hopefully that isn’t a problem.

    I found a guy in Belarus who has a 2005-2010 Chrysler 300C AWD Saloon (the 300c Magnum hybrid that was meant for the European market) that has 500hp 6.1 swap with the AWD that thing launches like a rocket from a dig and I think it may even be using the older weaker Magna Steyr MS140 transfer case.

    Chrysler 300c 6.1 AWD NOS - YouTube
    Last edited by bennyb747; 02-08-2020 at 07:19 PM.

  14. #14
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    The pickup would be shaped different for the pan, But the pick up should go into the block either way... the pick up tube may bolt to a different stud than the 6.4... but you can change the main stud to the correct one without taking apart the bottom end. I did that with my 5.7 when I swapped it into my old dart to make the aftermarket pan fit.

    The 6.1 has the same stroke, but I think trying to get your ECU to interact with the non VVT 6.1 Might be a Total PITA... the crankshafts have different tone rings for timing count and also the 6.1 and new 5.7 have different depth for the front cover, pulleys, and accessories. .
    Thanks bennyb747 thanked for this post

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