By on June 3, 2016

2017 chevrolet silverado 2500HD

You remember the hood scoop on that teased 2017 GMC Sierra 2500HD? The one General Motors really wanted you to notice?

Well, GM spilled the beans on the mystery inlet, explaining that all of its diesel-powered 2017 heavy-duty pickups will receive the scoop to force-feed air into the 6.6-liter Duramax engine.

To make the engine operate better under load, in hot temperatures and at higher operating speeds, GM needed the Duramax to breathe better, and stay cooler. The upgraded models receive a new air intake system that sees 60 percent of the engine’s air pass through the scoop, rather than the traditional intake inside the engine compartment.

The cool, dry air entering through the hood scoop provides a ram-air effect, though GM isn’t saying whether the official power output of the Duramax has changed. For now, they’re only admitting the engine will run better under most conditions.

“The 2017 Silverado HD was engineered to provide maximum utility for our customers in even the most extreme situations,” said Eric Stanczak, the Silverado HD’ chief engineer, in a statement. “While developing this all-new induction system, we considered our customers towing a maximum-weight trailer through the (11,000 foot elevation) Eisenhower Tunnel on a hot, rainy summer day.”

According to GM, extensive testing went into designing the system’s air/water separator, which prevents anything that isn’t air from entering the combustion chamber. You don’t want to have your pickup’s engine drown during as rainstorm — that’s something reserved for fans of old British cars.

The intake has a 180-degree turn that forces all water droplets — even mist — to form larger droplets that can then be removed via a special valve. When the hood scoop is blocked by snow or ice, an intake in a dry area of one of the front fenders handles all the duties.

[Image: General Motors]

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135 Comments on “GM’s Diesel-Powered HD Pickups Get Ram-Air Hood Scoop to Keep Things Cool...”


  • avatar
    Kenmore

    Can they stack that front end any higher?

    Only Ram retains any sense of style.

    • 0 avatar
      dukeisduke

      Some people laughed at Ford for the aerodynamic styling of the 1997-2003 F-150 (2004 if you include the one-year “F-150 Heritage” model), so nobody (even Ford) seems to care about aerodynamic efficiency nowadays when it comes to trucks.

      • 0 avatar
        Quentin

        The F150 was aerodynamic styling… not necessarily aerodynamically efficient. Square doesn’t necessarily mean worse aerodynamics. Lots of curvy cars have very high drag coefficients (especially those designed before actual wind tunnel testing or CFD became prevalent). The frontal area is definitely bigger on these new trucks and that hurts aero, but I’d say the Cd has probably improved dramatically over the old trucks. Unfortunately, it is almost impossible to find numbers on Cd of newer trucks. I found .45 for the those aero style F150s but that data is missing for the current F series and Silverado trucks on cars.com.

        • 0 avatar
          dukeisduke

          I did find this:

          GMC Pickups 101: Busting Myths of Truck Aerodynamics

          http://media.gmc.com/media/us/en/gmc/news.detail.html/content/Pages/news/us/en/2013/May/0516-gmc-pickup-aero.html

          • 0 avatar
            ttacgreg

            Looked at that site, it says they looked at every square millimeter for aerodynamic improvement . . . . seems they overlooked about twenty square feet of billboard flat grille facing 90 degrees to the oncoming airflow.

          • 0 avatar
            Quentin

            ttacgreg – frontal area includes the windscreen… not just the blunt nose of the grille. The only way to reduce frontal area is to make the truck physically smaller in the width and the overall height dimensions. The market has spoken that they don’t want their full size trucks smaller as every iteration is a little wider and a little taller.

        • 0 avatar
          Lou_BC

          The pickup box probably causes much more drag than the shape of the snout.

          • 0 avatar
            rudiger

            I think this was debunked by Mythbusters when they did an episode on whether driving around with the tailgate down improved fuel mileage. It turned out that it made no difference, whatsoever, whether the tailgate was up or down.

          • 0 avatar
            Lou_BC

            rudiger – all they debunked was the myth that dropping the tailgate improves fuel economy. They also explained why.
            The traditional design of a pickup isn’t aerodynamic. Drag is part of that picture.

      • 0 avatar
        DenverMike

        The Jellybean F-150 was just a ’90s styling gimmick. New fullsize pickups have more aero-efficient noses, despite their squared off, boxy look.

        Except it’s pointless to put a super aero-efficient nose on a pickup, when the rest of the truck’s extreme turbulence and drag, under/over/around/behind the truck, makes it silly to “jellybean” the poor thing.

    • 0 avatar
      Tinn-Can

      I can barely see over the hood of our 2015&2016 HD2500s… I wish they would put a height adjustable seat in there…

    • 0 avatar
      anti121hero

      I take it you havent seen the new crop of rams that say RAM bigger than a billboard from space on the tailgate? Does anyone have any taste anymore?? I really want to ask a guy driving one of those trucks “is that a ram?”

      • 0 avatar
        wolfinator

        Tell me about it. The ones I’ve seen have chromed lettering, which really ups the anti on tacky.

        This is going to be one of those styling trends that future generations look back on and mock. Like “brougham” is today.

        • 0 avatar
          Shiv91

          “This is going to be one of those styling trends that future generations look back on and mock. Like ‘brougham’ is today.”

          These trucks ARE modern day broughams.

      • 0 avatar
        Roberto Esponja

        But those are only specific Ram models (Rebel and Limited), not the entire Ram lineup.

        Personally I don’t mind the tailgate letters (Ford, Chevy, Nissan and Toyota pickups had pretty obnoxious lettering in the back too, in the past). But grille-wise, I prefer the traditional Ram grille, which can still be had.

        • 0 avatar
          Kenmore

          This gentleman gets it.

          I don’t care about aero; it’s a pickup. I’m not after a Leaf with a bed attached.

          But I do want some curvaceous differentiation between engine compartment and fenders like in da oldt dayss.

          Studebaker, come back!

      • 0 avatar
        ttacgreg

        Remember the spare tire covers on the old V6 Grand Vitaras?
        Embarrassingly crass and huge graphic.

  • avatar
    DeadWeight

    NEEDS 120% MORE WHEEL.

    NEEDS 150% MORE LIFT.

    NEEDS 220% LARGER FRONT END.

    NEEDS 260% MORE CHROME.

    NEEDS 330% MORE MOOOOAAAR!!!!!!!!

    *BRODOZERS 4EVER!

  • avatar
    Roberto Esponja

    What they should have done was, get rid of those obnoxious fender flares.

  • avatar
    dukeisduke

    Waiting for the first idiot to put repro Pontiac “RAM AIR” die-cut lettering on the sides of the scoop. You know it’ll happen.

  • avatar
    dukeisduke

    “According to GM, extensive testing went into designing the system’s air/water separator, which prevents anything that isn’t air from entering the combustion chamber. You don’t want to have your pickup’s engine drown during as rainstorm — that’s something reserved for fans of old British cars.”

    Or the recent Minis with superchargers.

    • 0 avatar
      Quentin

      I’ve never heard of this being an issue. A quick google didn’t bring that up either. The non-supercharged models apparently pulled their intake air from low in the fender and occasionally pulled in some water.

      I only ask because we have an R53 supercharged MINI and this is the first mention of it I’ve heard in 11 years of ownership.

  • avatar
    FreedMike

    Ye gads, is that ugly…

  • avatar
    anti121hero

    That is the most convoluted and fake and humongous and unnecessary and attention grabbing and disgusting and giant front end of a vehicle to have ever met my eyes

  • avatar
    ajla

    WTF is the deal with trucks anymore?

    • 0 avatar
      FreedMike

      They aren’t really trucks, at least not as I once understood them to be (you know, a vehicle made for work).

      • 0 avatar
        mason

        But you see, any of the big 3 will run circles around whatever it is you consider a “real truck”

        A medium duty trans in a light duty pickup

        300mm ring gear

        Tires/wheels that are rated for 3,000 lbs + each

        Cooling systems that will support 385 HP/900 lb ft of torque @ 3000 rpm ALL DAY LONG AT MAX LOAD.

        Today’s trucks are the most capable EVER.

        • 0 avatar
          ajla

          It’s nice they are capable. Why do they have to look like something out of a Pixar film?

          This thing practically makes an X6M look subtle.

          • 0 avatar
            mason

            Do you have a need/use for one?

            Will you ever buy one?

            I’m largely anti GM and will never own one of THESE unless Ram drops the Cummins/Aisin package and goes tits up, but if your not in the market for SOMETHING of this caliber than what does it matter to you?

            Perhaps you should stick to your Trans Am threads, or Civics or Corollas or whatever it is YOU have an interest in.

          • 0 avatar
            ajla

            “but if your not in the market for SOMETHING of this caliber than what does it matter to you?”

            Because I consider it an oddity to my visual senses. Like someone walking down the street in a gorilla suit or a cape. I might not have any interest in cape ownership myself, but I’m still interested in what is going on.

          • 0 avatar
            Lou_BC

            The hood scoop looks much better on the Silverado than on the new Sierra. The monochromatic grill is also more attractive since it tones down the look of the snout.

            These trucks need the large grill area to keep the engine running cool. As Mason has pointed out, these trucks have incredible capacity.

          • 0 avatar
            mason

            “These trucks need the large grill area to keep the engine running cool. As Mason has pointed out, these trucks have incredible capacity.”

            Lou, I’m afraid your efforts are lost on the majority. All that matters on TTAC is stream lined shapes and fuel efficiency. Never mind what they’re actually designed for.

          • 0 avatar
            Lou_BC

            @mason – true.

            What is ironic is that when someone in a car breaks down or gets stuck in the snow they will walk over to you in your pickup and ask for help?

            Happens to me all of the time but hey, my truck is just for show and never does any real work ;)

          • 0 avatar
            RobertRyan

            @Mason ,
            Saw one in Sydney a 3500 version, had this big chrome grill. Most obvious thing was the grill. They tend to look almost Asian/ Korean to me

  • avatar
    dal20402

    This is what the American pickup consumer wants.

    Personally, I’d take a restomod GMT400… I love the styling of those trucks. Clean, simple, purposeful, still modern (until you look inside). But I’m also not a likely truck buyer at all. GM knows its audience.

    • 0 avatar
      ttacgreg

      I wonder what percentage of pickup truck purchases are for vanity only?

      • 0 avatar
        Lou_BC

        “I wonder what percentage of pickup truck purchases are for vanity only?”

        No one asks that question on a Mustang, Camaro or Challenger thread.

        • 0 avatar
          ajla

          Because Mustang, Camaro, and Challenger owners don’t mind admitting they bought something for vanity. Who buys a purple Challenger “Shaker” or AMG Black Series other than because they wanted it?

          Truck and SUV people need to justify their Denali, Raptor, or Power Wagon purchases for some reason. They apparently also have rice paper skin when car fans make fun of their rig’s immense styling.

          I have two V8 cars right now. Zero “need” for it at all. Easily could have lived with a Sentra.

          • 0 avatar
            Lou_BC

            @ajla – I’ve never had to justify my truck purchase to anyone.

            The problem is that the stereotyping gets pretty heavy sometimes and is almost always the same.

            There are a few of us here that actually use our trucks.

          • 0 avatar
            mason

            First of all,

            You simply can not group all full sized truck owners together. The VAST majority of HD pick up owners own one because they have needs/uses for them. We’re talking enough of a difference in price between a half ton and an HD diesel to buy a good used car. People by large are not that frivolous regardless of what the dumb and dumber on TTAC believe.

            Second,

            No excuses! A truck can be driven year round, mud, snow, off road, loaded to the hilt, tow what you want/need, and hauls the family around in between AND retains a resale value that many sports cars can only envy.

            What can you do with your sports car? Look good on a sunny day, 6-7 months a year?

            I have no problem with that because that is YOUR preference. You buy what you want/like, right?

            Live and let live.

          • 0 avatar
            Big Al from Oz

            Mason,
            I can provide many examples of Lou attempting to justify his Ford pickup to all.

            He has a dog and his son when 5 years old was 6’10” hence the need for a full size pickup.

            He needs to tote stuff around for the kids, the wife, the Boy Scouts or whatever kids group he involved with, etc.

            He doesn’t need a full size pickup.

            Like all of us pickup owners he bought one because he can. Another reality is we could most likely all live our lives with a Honda Jazz or the like. But we are affluent (and some effluent) enough to buy what we don’t really need or require.

            Full size pickup owners really do seem to want to justify waste. I don’t care, probably most as well. It’s just the constant whining from them as to why a full size is the “ultimate” vehicle.

            Again, it comes down to small dick syndrome or they do seem to exhibit narcissistic traits, ie, my vehicle is the best because …….. and I can prove it, just ask.

      • 0 avatar
        DenverMike

        Almost half of 1/2 tons are official “Fleet”, plus a high percent of the rest are bought mostly/partly for work. Even when bought strictly for vanity, the truck will see plenty of “truck” use, just by default. This besides all the new, ‘truck’ related, bad habits. I mean a pickup owner would have to go out of his/her way, not to help out friends, family, and sexy neighbour’s daughters.

        • 0 avatar
          DenverMike

          Besides, any excuse to lose the “new pickup”, showroom “mintiness”. Scratches all over, and random minor dents. Owners will be ridiculed nonstop otherwise.

        • 0 avatar
          IAhawkeye

          This is too true. What the anti-truck mafia doesn’t realize is just how much use people get out of these. Even if you don’t plan on using it it comes in handy.

          People seem to forget that most people who buy HD’s have a reason to be getting one, fleet or personal. Most who can do without go 1/2 ton for fuel efficiency/comfort gains.

      • 0 avatar
        RobertRyan

        It would appear a lot in Australia, more noticeable than the ubiquitous LandCruisers

    • 0 avatar
      Firestorm 500

      I’ve got a GMT400. 1997 Silverado Extended Cab Stepside custom conversion. Solid Arctic White. Vortec 5.7, full leather Captain’s Chairs, and all the other goods.

    • 0 avatar
      Frylock350

      I kinda thought the 2014-2015 K2XX trucks look like a modernized GMT400.

  • avatar
    Hoon Goon

    The BRO is strong with this one. How much longer do we have to endure all this faux luxury? The chrome-plated plastic guys are loving it I guess.

  • avatar
    Big Al from Oz

    Why didn’t GM just use snorkels???

    Imagine the “water” scoop when off roading and fording rivers.

    Looks sh!tful.

    GM must be on a budget and asked a bunch of preschoolers to come up with the best looking air intake.

    Why not just build a more aerodynamic vehicle. This would be of greater benefit and cost effective way of improving FE.

    • 0 avatar
      Lou_BC

      BARFO – “Imagine the “water” scoop when off roading and fording rivers.”

      Where do you get your material?

      A truck this big isn’t meant to be an off-road weapon.

      The guy buys a BT50 and all of a sudden is an expert on aesthetics?

      • 0 avatar
        Big Al from Oz

        Nah, Lou, just and expert.

        That’s correct people buys these in 4×4 so they can lift them and think other think they are cool off roaders.

        • 0 avatar
          Lou_BC

          “just and expert.”

          You own a BT50. By your own admission the first truck you have EVER owned.

          That makes you an “Expert”.

          BWahahahhahahahahaha haaaaa haaaaaaaa haaaaaaa
          cough
          Ha ha ha ha ha ha ha ha ha ha ha

          Other than the Raptor, Power Wagon and Wrangler, every truck or SUV in North America is only rated to go no deeper than the wheel hub.

          So why the F^ck would they put a snorkel on it?

          BTW, use proper grammar if you are going to claim to be an expert.

          • 0 avatar
            Big Al from Oz

            Umm Lou,
            I’ve probably owned more pickups than most, even F Series.

            Don’t you recall, I even built and owned a 620 for rallying.

            Hmmm……I’m not just some Frod marketeer trying to make extra cash on the side.

            I actually have enough to buy pretty much what I want, even another full size. But, why would I? It would be a waste and it would only be useful on road.

            I’d say my next pickup will be the AMG Mercedes Benz pickup. That is if it’s done in true AMG fashion.

            I even was considering a Ram, they sell just around the corner for around 70 grand or so. They are sold with the Chinese pickups as well! Makes you wonder.

          • 0 avatar
            RobertRyan

            Lou,
            A Snorkel on these would be as useless as an ashtray on a motorbike( dated and non PC analogy ) They were never designed to do any off roading

          • 0 avatar
            Big Al from Oz

            RobertRyan,
            The snorkel is just a joke. I’ve actually seen guys smoking when riding. I always wondered how hot their lips got and how long the cigarette lasted.

            I’d bet people made statements that “in car” entertainment would be no good on a bike. Look at the Gold Wing. Probably the best bike to come out of the US for touring and towing;)

            A snorkel is ridiculous as much as the little vent on the hood.

            I’d say without a shadow of a doubt that GM realise the average consumer realises that GM have the lowest rated diesels in the HD market.

            To give the impression of “moar power” GM decided to add the small car “slit”. This is to fool all the full size pickup guys into believing that not to have a “slitted” hood means you have less power.

            I can’t be really that functional or have that much improvement. There is a lot of acres of flat front end on the pickup without adding “moar”.

          • 0 avatar
            Lou_BC

            RobertRyan – agreed. Big HD trucks aren’t off-roaders. 4×4 gets you around or on/off the job site or into a slick camp site. Basically any situation where traction is poor.

          • 0 avatar
            RobertRyan

            @Lou_BC
            Just saw a video, where two fellows from Texas came here to do drifting. They thought it was funny to see so many Pickups with Snorkels . It just emphasised the extent of Off Roading of in Australia. Yes HD Pickups are pretty much sealed pavement or graded dirt roads vehicles. High prices and changing demand had just 21 sold last month.

          • 0 avatar
            Lou_BC

            Robert Ryan – I rarely ever see snorkels. Even the hardcore off-roaders I know don’t use them. There isn’t much need for them here. Fiording or driving down any fish bearing stream is illegal and you can get hit with some big fines. Even swamps are protected.
            The north of BC is all forest and the southern interior is more desert like. The rest is mountain. What is open is ranchland/farm land.

          • 0 avatar
            RobertRyan

            Very common here, as common the ubiquitous Hilux. Fording streams is very common. As well you have the posers, who pretend to use them off road and their vehicles collect less dust and dirt than me.

    • 0 avatar
      Frylock350

      Here’s the thing BAFO, American truck buyers will not buy a feminine curvy truck. If Chevy sold a Silverado HD that looked like a foreign market pickup the F250 would experience record sales. I’m a Chevy guy but I’d run to the Ford dealer to get a truck that doesn’t look like a soccermom’s CUV.

      People do not buy a Silverado HD Duramax to do hardcore offroading; they buy them to tow campers, horses, quads, bikes (harleys not huffys), big boats, etc. That’s its primary purpose, towing heavy stuff.

      Also, these square trucks are more aerodynamic than you think they are.

      • 0 avatar
        Carlson Fan

        “People do not buy a Silverado HD Duramax to do hardcore offroading; they buy them to tow campers, horses, quads, bikes (harleys not huffys), big boats, etc. That’s its primary purpose, towing heavy stuff.”

        Right on Frylock350. No one gives a rats a$$ about the off-road capability because that’s not people buy them for. The off road vehicle(s) is inside the triple axle 36′ enclosed trailer hitched to the back. That’s what my brother put behind his GMC HD all winter when his boys were racing snowmobiles. The last guy I talked to with an HD diesel Ram had a 1st gen highly customized Bronco in his enclosed trailer that also had living quarters where he could stay when attending his off-road events.

  • avatar
    RHD

    Is the high hood and flat front somehow supposed to be for pedestrian safety? If this truck hits a pedestrian, the whole person will get splattered, not just the lower half. What’s the safety advantage of that?

    • 0 avatar
      Lou_BC

      RHD – that snout is almost all plastic and the metal bumper can be dented by a flea fart so it probably isn’t going to be much more traumatic to a pedestrian than a car with a low snout that will clip the legs and put them into the windshield. Safety glass has a wonderful cheese grater effect on the human body.

    • 0 avatar
      Big Al from Oz

      RHD,
      You’ll find this is an anomalie with US vehicle design regualtions. The US is different, I suppose to act as a technical barrier as well.

      It does provide for safety, but the regulations are crafted as such to made it awkward for direct imports.

      The difference in US design regulations costed the US consumer over $13 billion dollars in 2013.

      But you’ll never see TTAC do an article on why the US has to be different than the rest of the world.

      • 0 avatar
        DenverMike

        It’s European Union “regulations” that go out of their way to be “different”. They “zig” everywhere US regs “zag”. It’s to the point of comedy.

        Point is, the EPA and NHTSA/DOT came about first, then the EU came up with their own “different” regulations as straight-up import barriers.

        And a crazy, insane and protectionist EU 10% import tariff on all foreign cars that’s still in place today.

  • avatar
    mason

    I bet 9.9 out of 10 that make some lame comment about guys that drive these trucks must be compensating for small d*cks will be grabbing their ankles and biting their pillows later tonight.

    • 0 avatar
      Lou_BC

      mason – truck threads turn car guys into mini-me Sigmund Freud’s.

      • 0 avatar
        Big Al from Oz

        Lou,
        And you are the worst of the pickup trolls around.

        At least I seek enjoyment out of making anti brodozer comments, the general metality of you little d!ck big rig types is ood.

        I can see why Donald Trump has a chance at the White House.

        • 0 avatar
          Lou_BC

          @BARFO – thanks for admitting that you make comments of no value and just for your own pleasure.

          Since you mentioned trolls, why were you banned from PUTC?

          • 0 avatar
            Drzhivago138

            He was banned?!! Oh man, storytime!

          • 0 avatar
            Big Al from Oz

            DrZ,
            As some might not know PUTC is sponsored by Ford, or it seems.

            Even the last Editor went straight from PUTC to become Ford’s top marketer, Mike Levine.

            I do believe some of my comments upset the Ford people (Mike Levine). This is why Deadweight must be careful about some of his comments.

            The big a$$ed honchos that run these companies don’t like constant negative comments about their products.

          • 0 avatar
            DenverMike

            Yeah, I’m sure it had nothing to do with BAFO’s blatant use of multiple “user names” and profanity.

          • 0 avatar
            Drzhivago138

            Then again, PUTC was never the paragon of enlightened discourse.

            @BAFO: Forgive me if I don’t think you can be an unbiased source. What verifiable proof do you have that shows you were banned for “upsetting the Ford people,” or even that the site is pro-Ford?

          • 0 avatar
            Big Al from Oz

            DrP,
            What proof do I have that I was banned. No one knew.

            Lois was just surmising as does DenverDike.

            So, it appears my comment should hold more credibility.

            As I’m the only one who actually knows.

          • 0 avatar
            Lou_BC

            BARFo – did I say why you were banned?

            Proof you were banned?

            Your blog name no longer appears and if one uses it jokingly in reference to your “disappearance” it also gets deleted.
            You showed up there with a “new” name and in short order the same thing happened all over again.

            So all you have left is trolling this site.

            Your blog style is distinct and the arrogant condescension is easy to spot.

          • 0 avatar
            Lou_BC

            @BARFO – if you weren’t banned then why don’t you post over there? Not to hard to cut and paste the proof along with the date stamp.

    • 0 avatar
      Quentin

      I’m glad to see that this has devolved into hurling insults about genital size and sexual preference.

  • avatar
    mustang462002

    Oh no someone insulted the Brodozer!

    1st rule of Brodozer club- Never insult the brodozer!

    2nd rule of Brodozer club- Always have truck nuts!

    3rd rule of Brodozer club- Always have a lame sticker showcasing your love for death, heavy metal, guns or a wry comment on general violence.

    4th rule of Brodozer club- Always park in 2 spaces.

    5ht rule of Brodozer club- Drive as though it’s the size of a Corolla.

    6th rule of Brodozer club- Add a lift kit and never use it.

    7th rule of Brodozer club- Park at your house’s driveway while blocking the sidewalk.

    8th rule of Brodozer club- Always roll coal!

  • avatar
    ttacgreg

    I’m calling B.S on two points here.

    The cool, dry air entering through the hood scoop provides a ram-air effect, Yeah right, that little mail slot, recessed from the square edge of the hood where there is likely actual negative pressure behind the bow wave, is going to generate positive inlets pressures enough to increase power? B.S. unless said truck is going about 300 mph. Cooler induction air is credible however. For decades now lots of pedestrain vehicles have their underhood inlets located where the cool underhood air is.

    “we considered our customers towing a maximum-weight trailer through the (11,000 foot elevation) Eisenhower Tunnel on a hot, rainy summer day.”
    B.S. again! I live a few miles from the tunnel. At 11,000 feet, a hot day is mid 70’s, around 80 at the very most. When it rains at 11,000 feet, temperatures drop drastically, like upwards of 20 degrees.

    Great marketing blather anyway. In any case this still looks like just the thing to impress the ladies, and run to the grocery store in.

    • 0 avatar
      SCE to AUX

      Agreed on all points. That scoop’s not ramming anything.

      • 0 avatar
        mason

        Of course it’s not a ram air set up. It doesn’t need one, it’s turbo charged which is many times more effective than a ram air set up in a NA engine. The reference of “ram air” is misinterpretation from an uninformed editor and nothing more.

        Now what a turbo does benefit from is cool air. Power is increased exponentially when cool dense air is fed into the turbo vs hot stagnant under hood air. Much easier to draw said cool air from a hood scoop or front of a grill rather than drawing from an enclosed fender well trapped with latent heat.

        Ram has had a very similar set up since 2013. It is called The Ram Active Air intake system and is controlled by multiple sensors feeding the ECM. it draws cooler air from the frontal grill area when it senses extreme heat or sustained engine loads and also engages at high altitudes for improved throttle response. When conditions are wet the system closes off and pulls air from under the hood in the fender well. It can even detect snow if it is heavy or wet so as not to draw any moisture into the filter. It is a very advanced air intake set up and provides the best of both worlds. I dont know the details of the GM intake but I am certain it is similar in function.

    • 0 avatar
      Lou_BC

      There doesn’t need to be much of a “ram air” effect to be beneficial.

      I used to have a Yamaha YZF1000. After I broke it in I started using all of the power it used to crap out around 240kph. All of the tests I read put top speed at 260kph. The local dealer checked into it and some YZF’s had a wiring harness run incorrectly across the air intake. They relocated the harness and it hit 260kph and was much more brutal in higher rpm.

      At least it is a real air intake. I HATE hood scoops that are non-functional. Are you listening Toyota Tacoma engineers?

    • 0 avatar
      Big Al from Oz

      ttacgreg,
      Agreed, boundary layer air sits around 5″ above the surface.

      This is what I term a wank feature for little d!ck people. I’d bet these sell big in BC.

      A snorkel will give better service. Really people buy these things as trucks. I suppose most are just big cars.

      • 0 avatar
        Lou_BC

        @BARFO – “a wank feature for little d!ck people”

        Reflecting your own insecurities upon others once again.

        Back in the 70’s Mack started putting intercoolers on their “R” model trucks. They were easy to spot as they had a hood scoop added.

        It worked for them and now it isn’t going to work for GM?

        Oh, forgot.

        I’m dealing with an ex-spurt.

        • 0 avatar
          Big Al from Oz

          Who said it wouldn’t work??

          It’s just not necessary for the the work the vehicle does and the size of the engine.

          The “ain’t” real trucks. This is the problem with you types. You believe you need a few acres of grille, a bonnet scoop, etc.

          You are sold, you are simplistic, rustic and provincial.

          • 0 avatar
            mason

            The fact that you are trying to compare a class 8 tractor to a pick up is laughable. Do you know why tractors don’t need hood scoops Al? Because NONE of them draw air from inside the engine bay.

            NONE.

            Edit:. This response was supposed to be to Al’s comment below mine. Not sure how it ended up here.

          • 0 avatar
            mason

            You’re not following along very well Al. I said they don’t draw air from inside the engine bay. I never said anything about filter placement. I’ll say it again, THEY ALL DRAW COOL AMBIENT TEMP AIR FROM OUTSIDE OF THE ENGINE BAY. How they do that differs from manufacturer to manufacturer. If the filter is inside the engine bay you can bet your upside down ass there is some kind of fresh air inlet, whether it be through the grill, the hood, or the fender.

            Edit:my response was misplaced again. Wtf?

          • 0 avatar
            mason

            Lou, based on some of his comments I doubt Al even understands why high rise snorkels are used in Aussie. I’ve seen a few rigs fitted with them in the deserts of Wyoming but the vast majority of trucks (big or small) simply do not need them.

            Al, how do you propose pick up trucks get clean cool ambient temp air? You do realize the frontal grill area is largely reserved for the intercooler, radiator, and trans coolers don’t you? It’s no longer feasible to draw air through a stifled inner fender well with the power these trucks are making. That worked 10 years ago when engines were peaking out at 300 HP but we’ve long surpassed that mark. Engineers have done a fantastic job designing these trucks to run at rated rpm x rated load for sustained periods. That means all cooling systems including the air intake system have to be able to cash the checks the engine writes. That means large frontal areas. It’s got nothing to do with styling, these trucks need to breathe and cool. You love to compare class 8 rigs to pick ups, why do you think they have such large frontal areas? Where are they drawing air from? Certainly not from inside the engine compartment.

            You get hung up on what works over there and think it should work over here. Problem is your top rated pick up engines are about on par with engines over here from 10 years ago. That’s not meant to be an insult, it’s just the way it is.

            Edit: three responses in a row that are misplaced. All three were in response to the comments below

          • 0 avatar
            mason

            My response will likely be misplaced again, but here we go.

            Al said:

            “This scoop will work to supply air”

            BINGO! Now your finally catching on Al! Why are you so hung up on this system being a ram air set up? I have yet to see GM market it as such. Just because an editor used the phrase only means they’re misinformed. The whole point is to provide a place for the turbo to DRAW AMBIENT TEMP AIR.

            It’s a really simple concept. Try not to make it something its not.

        • 0 avatar
          Big Al from Oz

          Lou,
          Here’s a typical heavy duty Aussie truck. How much grille and bonnet scoop is there??? From the pickup a US HD would struggle to tow the wheels let alone one trailer.

          These will travel at 110kph and over, 70mph plus.

          This works in the equatorial deserts and savanna as well. Where temperatures are fncking hot, even compared to the US’s South West.

          Like I stated how necessary is the air scoop??

          http://www.hankstruckpictures.com/pix/trucks/brian_beadel/2005/oct22/hwscan0001200001.jpg

          • 0 avatar
            Big Al from Oz

            Mason,
            Yup, they use “snorkels”.

            My comment has little to do with whether the scoop is functioning or not. It would be silly to put a Tundra like scoop.

            My comment states is is necessary or is it through poor design that the bonnet scoop is necessary.

            A decade or so ago here when we started getting more powerful diesel bonnet scoops were added.

            Now with the new midsizers built for the engines we don’t use bonnet scoops.

            The bonnet scoop is poor design. GM is making a beat up to sell the idea.

            Like I stated most numpty “big rig, big grille” people will think it’s necessary. It ain’t.

            The use of the road train was to show that the grilles and bonnet scoop are just a gimmick. They are there for aesthetics. Yes air does go through the grille and the scoop does draw in air. But they are overly done and unnecessary.

            Look at this truck and it is damn sight bigger than any HD. Look at the size of it’s grille and where is the air intake?

            You have been sold the idea. Big grilles and scoops are necessary in your mind. To you it has little to do with poor design.

            http://www.primemovermag.com.au/uploads/primemover/articles/pm-0213-test-isuzufy650.jpg

          • 0 avatar
            Lou_BC

            @BARFO – 1970’s is my reference point. It was a quick and easy modification. The hood scoop on the Chevy is also a quick and easy modification.

            My dad’s R600 had a Mack inline 6 rated at 237hp. Add the hood scoop for the intercooler and that same engine was up around 285 hp. A buddy of my dad’s had one.

            Ever stop to think about the fact that what works in Australia might not work here?

            That road train could not move if it snowed or had to climb a few miles of 7% grade. Rain would also kill it.

            Better luck next time.

            That chip on your shoulder is as big as a West Coast Sitka Spruce.

          • 0 avatar
            Big Al from Oz

            Lou,
            Now how efficient were 70s intake and exhaust systems compared to today. Have you ever looked at an aircleaner from a vehicle of that era??

            Or how efficient were US V8s in the 70s? Not very. What around 250hp and around a few hundred foot pounds of torque if you are lucky. How hard would it be to get a few extra hp?

            If GM has just found out about this brilliant way to increase power, why do other manufacturers not use this on ALL vehicles and why has GM just latched onto this idea?

            Here’s some food for thought;

            “RAISED SCOOP
            Any object moving through the air is soon surrounded by a layer of slower-moving air known as the boundary layer. The boundary layer clings to the surface of the object, interfering with the flow of faster-moving air around or into the object. This can defeat the purpose of a scoop, particularly a ram scoop, by blocking air from entering the scoop inlet (except perhaps a small amount of the boundary layer air itself). To avoid that impediment, many scoops are raised or extended outside the body to place them above the boundary layer. This can increase the scoop’s effectiveness, although the scoop will then increase the vehicle’s aerodynamic drag.”

            http://ateupwithmotor.com/terms-technology-definitions/hood-scoops/

            Now, to have any real gain from the scoop the vehicle must travel at some speed.

            Sitting in traffic, off roading and general driving around there will be little benefit from this scoop. The scoop you mentioned from the 70s was purely making something more efficient.

            Do you not think this day and age most vehicles are much more advanced in engineering and design in comparison to the 70s.

            If what you state is true, then all vehicles would have scoop on their hoods.

            I knew of a guy who owned and raced his open wheeler. He built a ram air intake for the vehicle to increase power, taking into account the limits he was allowed change and alter the vehicle.

            The scoop only gave 4 more hp at 108mph.

            I do believe this is a wank feature to sell GM pickups to the unsuspecting. And of course GM will sell and tell you bull$hit on the advantages of this.

            A highly tuned vehicle that travels at high speeds, ie, performance/racing vehicle will get an advantage from this. This Silverado is not a highly tuned machine, even for a diesel.

            Look at what BMW get from diesels in their M’s.

            Even with intercoolers this day and age sit in front of the radiator.

            This scoop will work to supply air, but that about it. Its more gimmick than substance.

          • 0 avatar
            heavy handle

            Big Al,

            The rig in your picture has a grille that seems to be at least 5’x5′ (25 square feet).

            Think about that for a bit. How does that support anything you’ve stated so far? Seems quite the opposite.

            All I get from the picture is the fact that Australians use American trucks, therefore Americans trucks must be the best trucks in the world.

          • 0 avatar
            RobertRyan

            @Mason,
            This is more my area than Big Al From Oz’s
            You will find a lot of European, ” US Styled but designed an built here “, Trucks as well as countless Japanese Trucks.
            Truck companies can have European, Aussie US and Japanese Trucks in their inventory
            Light and MDT Trucks are the preserve , primarily of the Japanese, but you are seeing more European trucks. There are Japanese HDT’s as well, they roughly in the lighter 530-560hp range
            Very different scene to NA

          • 0 avatar
            Big Al from Oz

            HeavyHandle,
            No, that truck is actually built in Australia for Australian conditions. Its an Amercian branded truck. Like stating people who drive a Tundra are driving Japanese.

            American trucks make up around 25% of our trucks as we have trucks from the EU and Asia.

            As for the grille size I’d say 3.5′ wide and a little under 4′ high. Trucks are not 10-12′ in width.

            If you are troubling identify what I have stated a trick I used to teach my young guys at our College was to jot down the main points to go back over;)

            It’s not a necessity the scoop, if it was then don’t you think most any vehicle would be using them??

            It’s purely a design exercise, a gimmick and most likely the cheapest way for GM to modify the truck.

            Not necessarily the best modification.

      • 0 avatar
        mason

        “This is what I term a wank feature for little d!ck people. I’d bet these sell big in BC.

        A snorkel will give better service. Really people buy these things as trucks. I suppose most are just big cars.”

        Huh? How would a gaudy snorkel benefit this truck more than a a simple fresh air intake? A truck that is designed to work, not Ford rivers or whatever it is your dreaming up.

        Engines need cool ambient air to perform their best. If the article is correct stating the engine can draw 60% of its air through the hood than it is absolutely a functional component.

        It is not a hood ornament.

    • 0 avatar
      duffman13

      So I may be misunderstanding but is the intake feeding the truck’s intake itself? Or being an HD (turbo-diesel?) is there a TMIC that’s getting the air pushed through it like a turbo Subaru?

  • avatar
    Dan R

    Midnight cowboy conveyance.
    GM have lost their styling way.
    Looks like something Hyundai would dream up on a bad day.

  • avatar
    packardhell1

    I agree with those that state this pickup is so much more capable than trucks from even a few years ago. The big 3 have made huge strides in capability, comfort, and efficiency.

    My daily driver is a 1995 Chevy C1500, regular cab, 4.3 V6. It is a pretty honest truck.

    When I compare what I drive to the truck in this article, or even most of this year’s trucks, one word comes to mind…..

    Gaudy

    That was the first word that came to mind when scrolling on TTAC and seeing the image for this article. I’m probably being closed minded and my tastes may be outdated. I’m 35 so I don’t feel like I’m that old and I do like stylish vehicles, but the truck, in that picture, at that angle, in that trim, just looks soooooo gaudy.

  • avatar
    Mackie

    This looks ridiculous. The vehicular equivalent of a ’70s leisure suit—accessorized with gold chains and the like. I’d feel like a total twat in this.

    • 0 avatar
      ttacgreg

      HA! the first image that popped into my mind reading your comment was the stereotype open shirted, furry chested disco loving guy wearing blingy chains around his neck.
      The 70’s were so dismal in so many ways. At least pick up trucks were far, far less pretentious then.
      Of course in the 70’s there were twenty foot long gaudy “full size” land yachts, the niche that today’s ginormous pick up trucks moved in to fill since fuel efficiency regulations are tougher on cars. I do have to hand it to technical progress. Modern day monster trucks are way, way more fuel efficient than those old v-8 land yachts.

  • avatar
    JustPassinThru

    Just one more rig I will NOT buy.

    As long as mini-pickups, and then, Gen1 Tacomas, survive…I will have wheels.

    Beyond that…I guess it’s a death race. Tinworm and little trucks, or me and mortality. Twenty years, max…

  • avatar
    Shiv91

    At this point they might as well throw on a landau roof and opera lights while they’re at it LOL.

  • avatar
    Quentin

    I love the look of the factory fake hood scoop on my Trail Edition 4Runner. I also loved the factory fake hood scoop on my 2001 Impreza 2.5RS. No air – don’t care. ;)

    Only my wife’s MINIs have had functional hood scoops. haha

  • avatar
    mustang462002

    Okay okay. If your truck bed is dirty or scratched its not a brodozer.

  • avatar
    Jaeger

    Almost comically fugly. Looks like the pickup version of the Griswold family station wagon.

  • avatar
    Jeff S

    I have seen worse than this but this is not my cup of tea. A little too much bling for my taste, but then I have no need for a truck this big. The grills have gotten too big on most vehicles for my tastes especially on the cars and suvs that look more like a fish mouth. If some want something like this then that is their choice.

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