Author Topic: Late Model Ram Hemi Supercharger  (Read 894 times)

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Offline Hemiadda2d

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Late Model Ram Hemi Supercharger
« on: May 11, 2020, 07:53:15 am »
So I was dreaming and looking at supercharger kits the other day.  I found this really cool Whipple kit for '13-17 Rams with the 5.7L Hemi.  I didn't see a boost level, but I don't expect it to be too wild.
It belts out an incredible 390 HP (nearly doubling stock output) and 240 ft-lbs of torque.  All for a cool seven grand--such a deal!  https://www.americantrucks.com/whipple-w175ax-29ltercooled-supercharger-kit-1317-57l-ram-1500.html

Hypothetically speaking, what mods would have to be done for this upgrade?  Would the stock bottom end even live with this kind of torque?  If not, forged crank, billet rods and new pistons?  What mods would need to be done to the transmission, transfer case and axles?  Are sufficiently strong components around for the 8-sp auto and T-case (my truck is a 4x4)?  I would assume a whole 3/4 ton axle swap might be necessary to live under all that torque.

The axle wrap would have to be controlled, adding more suspension mods (ladder bars, links, etc?).  Suddenly, that $7K is looking more like $27K when you consider all the HD parts and upgrades required to just live under all that power (and my right foot would use it ALL!).
17 Ram 1500 4x4 Hemi, 96 Dakota Sport CC V8 4x4 (sold)
Sweptline truck nut (would love to build a '66 as a street truck) 
Mopar and railroad nut from birth....

Photos: https://www.flickr.com/photos/[email protected]/

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    Offline Elwenil

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    Re: Late Model Ram Hemi Supercharger
    « Reply #1 on: May 11, 2020, 09:38:09 am »
    390? My 2018 5.7L puts out 383 HP. Doesn't seem worth the effort.
    L.Clemons

    1988 Ramcharger AW450-318EFI-NP435 4 speed-NP205 Transfer Case-Dana 60s-Braden Wormdrive Front Winch

    2018 Ram 2500HD Crew Cab 4WD 5.7L

    I am the unknown Will,
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    Offline Hemiadda2d

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    Re: Late Model Ram Hemi Supercharger
    « Reply #2 on: May 11, 2020, 12:06:12 pm »
    I think my '17 1500 is rated 395 or something.  Your '18 is a 2500, right?  Is it derated due to a different, heavy pulling torquey cam?

    I have no need of such heavy pulling, but a 2500 is probably a better starter for this upgrade due to HD components?
    17 Ram 1500 4x4 Hemi, 96 Dakota Sport CC V8 4x4 (sold)
    Sweptline truck nut (would love to build a '66 as a street truck) 
    Mopar and railroad nut from birth....

    Photos: https://www.flickr.com/photos/[email protected]/

    Offline Elwenil

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    Re: Late Model Ram Hemi Supercharger
    « Reply #3 on: May 11, 2020, 03:25:13 pm »
    The engine is basically the same, not sure why the difference. The torque is the same.
    L.Clemons

    1988 Ramcharger AW450-318EFI-NP435 4 speed-NP205 Transfer Case-Dana 60s-Braden Wormdrive Front Winch

    2018 Ram 2500HD Crew Cab 4WD 5.7L

    I am the unknown Will,
    The Anger that threatens glory and ruin:
    Lord of Storms am I,
    in heaven high and caverns deep.
    I am the Father of the War,
    Odin for you, Wotan for him,
    Wayfarer, Wanderer, beggar, king,
    numen, genius, strength and ring.

    Offline maxt2014

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    Re: Late Model Ram Hemi Supercharger
    « Reply #4 on: May 11, 2020, 08:10:49 pm »
     I know a guy with a whippled 5.7 1500, it made 520 rwhp on a stock motor.

    Offline RXT

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    Re: Late Model Ram Hemi Supercharger
    « Reply #5 on: May 12, 2020, 08:58:23 pm »
    Hmm,  ::) thats got to be the most pathetic supercharger on the market!!

    240lb-ft torque??! A naturally aspirated 5.7 belts out around 400lb-ft of torque. Whats this thing do, suck air out of the engine??!

    Ok seriously, and hypothetically, if you wanted to install a huffer on a Hemi, most street friendly units aren't pushing a bunch of boost, my guess would be around 5 to 15 psi. At those levels, you probably won't need any bottom end reenforcing. The only area you might have to address (and I'm only throwing it out there, just in case) is the ring gap. With more boost and more heat, ring gap closes more. You get into trouble if the gap closes entirely and the top ring binds...But thats a really big if -and personally, I doubt it's possible because those are really low boost levels.

    I think the trans will live and so would the rest of the drivetrain, so long as you're not running big tires and rock crawling, or hitting the drag strip and side-stepping the clutch

    One more thing, for a bit less moola, you might get cheaper forced induction with a turbo, thanks to the huge market that often caters to the diesel world. You won't need a huge high psi turbo for a moderate displacement gas engine.

    Ed
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    Offline Mopar572

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    Re: Late Model Ram Hemi Supercharger
    « Reply #6 on: May 13, 2020, 01:17:07 pm »
    I believe those hp/tq numbers are in addition to the factory numbers guys.
    1985 W250, 318, 435, 208, 44/60
    1991 W350, 360, 435, 205, 60/70
    1991 D250, 360, 518, 60

    Offline Elwenil

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    Re: Late Model Ram Hemi Supercharger
    « Reply #7 on: May 13, 2020, 01:25:14 pm »
    An add-on supercharger that more than doubles the rated horsepower? I doubt it. I do think there is something wrong with the numbers, but I don't think that is it.
    L.Clemons

    1988 Ramcharger AW450-318EFI-NP435 4 speed-NP205 Transfer Case-Dana 60s-Braden Wormdrive Front Winch

    2018 Ram 2500HD Crew Cab 4WD 5.7L

    I am the unknown Will,
    The Anger that threatens glory and ruin:
    Lord of Storms am I,
    in heaven high and caverns deep.
    I am the Father of the War,
    Odin for you, Wotan for him,
    Wayfarer, Wanderer, beggar, king,
    numen, genius, strength and ring.

    Offline RXT

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    Re: Late Model Ram Hemi Supercharger
    « Reply #8 on: May 13, 2020, 08:10:39 pm »
    I had to look up this SC at Whipple and it looks like that particular is designed to push a higher boost, 10-25psi.

    Ed

    If we lose freedom here, there is no place to escape to. This is the last stand on Earth.

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    Offline Hemiadda2d

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    Re: Late Model Ram Hemi Supercharger
    « Reply #9 on: May 14, 2020, 07:48:31 am »
    That'll require a bottom end rebuild, no?

    17 Ram 1500 4x4 Hemi, 96 Dakota Sport CC V8 4x4 (sold)
    Sweptline truck nut (would love to build a '66 as a street truck) 
    Mopar and railroad nut from birth....

    Photos: https://www.flickr.com/photos/[email protected]/

    Offline Elwenil

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    Re: Late Model Ram Hemi Supercharger
    « Reply #10 on: May 14, 2020, 09:40:05 am »
    To withstand that sort of power and boost, you would be doing a lot more than a rebuild. Definitely not a "bolt-on".
    L.Clemons

    1988 Ramcharger AW450-318EFI-NP435 4 speed-NP205 Transfer Case-Dana 60s-Braden Wormdrive Front Winch

    2018 Ram 2500HD Crew Cab 4WD 5.7L

    I am the unknown Will,
    The Anger that threatens glory and ruin:
    Lord of Storms am I,
    in heaven high and caverns deep.
    I am the Father of the War,
    Odin for you, Wotan for him,
    Wayfarer, Wanderer, beggar, king,
    numen, genius, strength and ring.

    Offline Mopar572

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    Re: Late Model Ram Hemi Supercharger
    « Reply #11 on: May 14, 2020, 10:20:38 am »
    Take a look at whats used in a Demon engine, youd be close to that HP.
    1985 W250, 318, 435, 208, 44/60
    1991 W350, 360, 435, 205, 60/70
    1991 D250, 360, 518, 60

    Offline Hemiadda2d

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    Re: Late Model Ram Hemi Supercharger
    « Reply #12 on: May 14, 2020, 01:35:44 pm »
    17 Ram 1500 4x4 Hemi, 96 Dakota Sport CC V8 4x4 (sold)
    Sweptline truck nut (would love to build a '66 as a street truck) 
    Mopar and railroad nut from birth....

    Photos: https://www.flickr.com/photos/[email protected]/