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2010 Dodge Ram HD - Click above for a high-res gallery

If you think there's nothing wrong with Chrysler's 5.7-liter HEMI V8 engine that an extra dollop of horsepower can't fix, we have some great news for you. Our friend and knower-of-all-things with a pickem-up-bed Mike Levine at PickupTrucks.com is reporting that Dodge's next Heavy Duty Ram will be offered with a big 'ol 6.4-liter version of the OHV V8.

Based on the current 6.1-liter version of the HEMI, an engine that appears in any number of SRT-branded cars, the new engine would feature both a larger bore and a longer stroke, with resulting power figures estimated to fall somewhere between 450 and 500 galloping ponies.

An engine with that much power would need a beefy transmission bolted up to its crankshaft, something Dodge already offers with its diesel engines. Levine suggests ChryCo could use the latest six-speed gearbox from German specialist ZF.

Of course, all of this assumes that Chrysler emerges from bankruptcy with these projects intact. Bug assuming that, we're being told that in addition to its spot in the Ram HD lineup, the 6.4-liter HEMI V8 is also likely to make an appearance under the hood of Jeep's next Grand Cherokee SRT8. The next obvious question, then, is how much money will the powerplant add to the cost of the vehicle and what kind of fuel mileage will it be able to muster?

[Source: PickupTrucks.com]

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    • 1 Second Ago
      • 6 Years Ago
      Looks great.
      • 6 Years Ago
      Who wants these things? It makes my stomach turn, they're revolting...

      It looks like an oversized kiddy toy. Wheels look small in huge wheel arches, chromey grille, ... Oh wait, off course you could replace the wheels by even chromier and bigger and more blingy 26" spinners! Ow yeah!

      Some people really don't have any taste. "Make them trucks! The bigger, the better!"

      If you need to haul stuff around, get a van or a simple real duty truck. If you want to go offroading with all your kids on board, get a landrover for christs sake.

      Oh well, if it sells, it sells... Chrysler is going down anyway, so who cares...
        • 6 Years Ago
        You just don't get it. Trucks are good. They are meant for work. You don't always have the money to have both a work truck and a personal car. I don't own a truck or plan to own one but I can see how these trucks are useful. Just because you don't need one does not mean everyone else doesn't. I mean, we really don't need sports cars on the streets but we would love to own some. quit your crying.
        • 6 Years Ago
        * 500 horsepower pickup.
        • 6 Years Ago
        No John, EU_reader = thumbs up by default.
        There is no justification for a 500 pickup, not for personal use and not for commercial use. If you run a business and you need to move big things around on a regular basis, get a commercial van or a lorry which does the job much better. Which as it happens FIAT makes lots of. I sincerely hope they will shut down these american excesses pronto.
        • 6 Years Ago
        You guys do know that people in Europe also tend to tow stuff - such as track cars; boats and so on. We do also do plenty of DIY - and yet we manage to make do without a 6.4L V8 truck for that.
        For businesses surely a proper large van, or a larger truck is what is needed - not one of these?
        • 6 Years Ago
        These are great if you want to put a Lance camper on them. Great stability. Much better than an RV if you ask me.
        • 6 Years Ago
        EU reader = thumbs down by default.....
        • 6 Years Ago
        This is a REAL work truck and it isn't built to be an off road toy. People that buy these need the towing capacity for large trailers for work and play. Lesser trucks will not do the job.
        You wouldn't be pulling a 40 ft tri-axle fifth wheel with you little Van or Landrover my friend.
      • 6 Years Ago
      It'l go over big in Texas.
      • 6 Years Ago
      Was anybody complaining that the 5.7L wasn't powerful enough? Seems like it should have enough guts for HD work to me. If you want more torque get a diesel. I don't really see how a company as hard up for cash as Chrysler can justify the extra cost.
        • 6 Years Ago
        So instead of adding more and more displacement - why not do what Ford are doing with their smaller trucks - and add turbo for the torque (see Ecoboost V6 being as good as the current Ford V8s)
        • 6 Years Ago
        The 5.7 hemi is fine. The 545rfe is not.
        If Chrysler could drop the ZF 8 speed auto into the Ram today, the 5.7 would be more than good for heavy duty usage.
        545rfe: 3, 1.67/1.5, 1, 0.75, 0.67, reverse 3
        ZF 8hp70: 4.7, 3.13, 2.1, 1.67, 1.29, 1, 0.84, 0.67, reverse 3.3

        (remember how everybody says the hemi falls flat on its face after upshifting from 1-2 (3->1.67), now it wouldn't (3.13->2.1)
        So tow/haul mode operates 1-7, otherwise you operate 2-8
        This saves money because new axle ratios are not needed.

        or use Chrysler's 6 speed auto
        3.231, 1.837, 1.41, 1, 0.816, 0.625, reverse 4.444

        Ford had no chose to make their 5.4 torque-y. The cylinder bore is extra small, 90mm. It can not flow enough air for big horsepower numbers (that is why Ford is wedded to superchargers)
        With 2 valves it was 260hp@4500, 350ft-lbs@2500
        With 3 valves it was 300hp@4750, 365ft-lbs@3750
        new update (open valve injection) 310hp@5000, 365ft-lbs@3600
      • 6 Years Ago

      Has anyone told you you are an idiot!! These truck are made to haul stuff and build the house you live in and the office you work out of, produce the food you eat, etc. So shut up.
      The whole world does not revolve around cars, and land rovers.
      • 6 Years Ago
      Put it in the Power Wagon. Do want.
      • 6 Years Ago
      why would you take a gasoline engine over a diesel in a HD truck? isn't the whole point of HD for Heavy Duty towing/hauling? Wouldn't a diesel give you more torque?
      though hope the 500hp engine makes it to the Challenger, 300c, and other cars that currently have the 6.1L engine. That would be nice.
        • 6 Years Ago
        It is going to depend on your needs, wants, and budget.

        New emission compliant HD diesels have lost a great deal of their fuel economy advantage, over gasoline engines. You can also figure on a diesel automatic costing $5000 to $7000 more than the highest power gasoline engine. Also, maintenance on a diesel is much more expensive than it is on a gasser.

        As long as the diesel and gas engine use the same trans, the capability should be the same (it is on my SD), or very close.

        I have the 6.8L V10 gas engine in my 2008 F250 4x4 CrewCab Lariat.
      • 6 Years Ago
      I love people who bash trucks. Whenever anyone i know makes a comment about how useless trucks are, I say no to helping them when they ask me to : haul sod/pickup furniture/pickup large appliances/pickup equipment for them/transport bikes/move etc.

      • 6 Years Ago
      Too bad Ford's gonna nix the V10 you've got. But at least the new 6.4L V8 will give Government Motors and Chrysler/Fiat/UAW/Government Motors something to chew on...the rubber from all them Fords!!!
      Finally a decent big motor to drop in the F-150 to close it's weakest link.
        • 6 Years Ago
        I'm not for them dropping it, either. It's one bad (awesome) engine. But they really need that 6.2 (mistyped 6.4 earlier) in the F-150. It's great for towing, but the 5.4 really can't handle 11,000 in a long uphill climb.
        Anyone else think those Dodge wheel fenders look like they're straight from the Super Duty...?
        • 6 Years Ago
        I think we will have to see on the V10. They have changed their minds a little, that they are keeping the V10 for chassis cabs, and motor home chassis.

        It will depend on where the torque for the 6.2 comes in. If it has a large deficiency, over the 6.8, you might see the 6.8 still being offered.

        The 6.8 is a fantastic engine. They are bulletproof, and powerful. I absolutally love the one in my truck. It is my daily driver (I don't drive much, at around 7500 miles a year), and our tow/haul vehicle. It is completely loaded, and we plan on keeping it forever. The TorqShift tranny is also fantastic.

        I will reserve judgement on the 6.2, until I see the specs.
        • 6 Years Ago
        I wish Ford would add VCT to the V10 engine.
        The V10 has a dual length intake manifold, where the 5.4 V8 has VCT.

        But if Ford's new engine makes 400hp 400ft-lbs, with an appropriate transmission to replace the torqshift (ZF 8 speed auto) the V10 could be dropped.
        • 6 Years Ago
        I agree. Ford shouldn't drop the V-10, but instead update it. It has the massive torque the 6.2 likely won't have. Get four-valve heads, modern variable valve timing and exhaust control, maybe even direct-injection, and a new 6-speed auto, it could be exceptionally competitive.

        A lot of people say "just buy the diesel". True, if you have the 6-7 grand. The V-10 is a $600 option. The Powerstroke is OVER 10 TIMES more expensive. Not everyone that has the need for this truck could swing that.
        • 6 Years Ago
        what are you talking about?
      • 6 Years Ago
      This is interesting. They've been talking about the 6.4L for years as the replacement for the 6.1L SRT Hemi.

      If they used the new ZF 8-speed auto and MDS in non-SRT applications, a 450 hp 6.4L V-8 wouldn't be that bad. Give it direct-injection, 8-speed as I said that would beautifully blend acceleration and efficiency from ZF, and a tri-mode MDS system, like Honda does with their VCM. For maximum balance of power and economy, a tri-mode here could go from 8-6-4 instead of just 8-4.
      • 6 Years Ago
      they said they would differentiate them, not make them completely different. basically the whole front end is larger to allow for the larger diesel engine, as well as cooling needs.
      • 6 Years Ago
      you will find that outside of North America, people in the civilized world use trucks actually designed for hard work such as the ford transit van and it's various truck incarnations, generally powered by small, potent diesel engines.

      The rest of the world seems to do just fine... why can't america?

      This looks like something a rapper would tool around in
        • 6 Years Ago
        We use vans in America as well, I've got two diesel E350 vans loaded with tools and used to occasionally pull small equipment (like scissor lifts, fork lifts, skid steers, ect).

        However we also use 1 ton trucks and chassis cabs because they're so versatile. They can carry tools with in-bed tool boxes, they can take a load of stone, dirt, mulch, plywood, ect, they can tow trailers over 10,000 lbs with a fifth wheel, and they can be outfitted with various bodies (dump bodies, boxes, welding bodies, ect), as well as various seating configurations (landscapers love having trucks that can seat six).

        For most smaller construction outfits or for individual handymen, a 1 ton truck works perfectly. It does 90% of what they need a truck for, requiring them to only rent or borrow a larger truck when they need it. Plus it saves them money, as they can use the same truck as their daily driver if need be, instead of having to buy another vehicle.
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