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6.4 HEMI Engine Performance Parts

Discussion in 'Heavy Duty' started by Donelam304, Aug 15, 2019.

  1. Donelam304

    Donelam304 Senior Member

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    I'm having to drop a new/remanufactured engine in my 2014 RAM 2500 and I'm wondering if anyone has done any big engine mods out there. If I'm replacing it on my dime, I might as well go ahead and do some good mods. ie headders, cats, tunes, CAI. Or anything else you can come up with. Let me know y'all.

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  2. SouthTexan

    SouthTexan Senior Member

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    The only one I know who has done any major mods like you are talking about is @theviking.
     
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  3. NewBlackDak

    NewBlackDak Senior Member

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    What happened?


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  4. U&A

    U&A Senior Member

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    Get that OEM cam and entire valve train out of there and put hellcat parts in at a minimum.

    That would be THE FIRST thing i would do.


    Sent while firmly grasping my redline lubed RAM
     
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  5. wyo2track

    wyo2track Senior Member

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  6. Donelam304

    Donelam304 Senior Member

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    For a rebuild and machined cylinders is 4k to 5k. I can drop a engine from LKQ in it for 5k to 6k. And it comes with a 2 year warranty. One I looked at is out of a 2016 ram 2500 with 36k miles in it. I had seen somewhere years ago that someone was making high flow CATs and headers. But for the life of me I can't find that post now. I already have the true duals in 3" all the way back from the CATs.

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  7. wyo2track

    wyo2track Senior Member

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    I think this is one of the only 6.4L options for headers...

    https://americanracingheaders.com/collections/dodge-ram-2500
     
  8. NewBlackDak

    NewBlackDak Senior Member

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    There are a couple others, but they’re junk. They warp and/or crack welds. Fixable, but by the time you do they are about the same price as the ARH.


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  9. michael harpe

    michael harpe U.S. Army 2001-2014 Military

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  10. theviking

    theviking Senior Member

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    Sorry, been out of pocket for a while. I've done about every possible NA bolt-on except gears (factory 4.10's). If I would list in order of usefulness, then headers would be first, followed by a custom tune and a torque converter. The American Racing headers are very well constructed and after almost 4 years of daily use I haven't had any trouble. The Magnaflow cat-back is nicely constructed and it gets rid of the stupid tailpipe resonator the factory uses. There is a minor amount of drone under load but it's still not as bad as the Borla system on my old truck.

    Canned of tune was a waste of money, but much better with the Hemifever custom tune. Particularly the trans tuning. Of course you'll be stuck running high octane fuel which gets expensive with the mileage these trucks get. But every time I had to reinstall the stock tune (for dealer work, etc) I'm reminded of how much the stock tune is lacking.

    You use a 1500 Hemi style converter on these trucks, even with the 66RFE. Stock converter never wanted to hit hard, and even with just a 2600 stall (Edge) converter the difference is night and day. If I wasn't towing much I might have tried the 2800 stall instead.

    AFE intake, ported tb and custom "ram air" tube were all very minor changes in comparison. Fastest 0-60 run was 6.08 according to my Diablosport and this was wtih the 35's on. But in fairness, it was a very cold day as well.

    Someday I'll probably do gear. Maybe.
     
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