Jump to content
  • William Maley
    William Maley

    GMC Announces The Specs For The 4.3L EcoTec V6

    Sign in to follow this  

    By William Maley

    Staff Writer - CheersandGears.com

    May 7, 2013

    GMC has announced the specs on the 4.3L EcoTec V6 that will be installed in the 2014 Sierra. The 4.3L produces 285 horsepower and 305 pound-feet of torque. GMC says the 305 pound-feet of torque is the best in class. Also best in class is the 4.3L V6 tow rating of 7,200 lbs.

    The 4.3L V6 goes on sale later this fall with a starting price of $25,085.

    Source: General Motors

    William Maley is a staff writer for Cheers & Gears. He can be reached at william.maley@cheersandgears.comor you can follow him on twitter at @realmudmonster.

    Press Release is on Page 2


    2014 Sierra’s New 4.3L Tops in Standard V-6 Pickup Torque

    New EcoTec3 engine continues rich GMC V-6 heritage

    2013-05-06

    DETROIT – When the all-new 2014 GMC Sierra full-size pickup arrives this summer, its standard 4.3L EcoTec V-6 it will offer the most torque of any standard V-6 in the segment – 305 lb-ft (413 Nm).

    Buyers will choose from three new, advanced EcoTec3 engines – a 5.3L available at launch, followed by the 4.3L and 6.2L versions available later this year. All are designed specifically for the high trailering and hauling demands unique to truck buyers.

    Torque is the turning force that generates off-the-line acceleration and confident trailering performance. Sierras equipped with the 4.3L EcoTec3 V-6 will have trailering ratings up to 7,200 pounds (3,266 kg) for a regular cab, short bed, four-wheel-drive model – 500 pounds more than the most capable Ford F-150 3.7L and 700 pounds more than a Ram 1500 3.6L. Sierra’s standard V-6 produces an SAE-certified 285 horsepower (212 kW) and is matched with a proven, efficient six-speed automatic transmission. EPA fuel economy estimates will be released later.

    Like Sierra’s optional 5.3L and 6.2L EcoTec3 V-8 engines, the new V-6 features three state-of-the-art technologies – direct injection, active fuel management (cylinder deactivation) and continuously variable valve timing – that have been proven and perfected through 6 million hours of computational analysis by engineers studying the combustion process. In all, 10 million CPU hours were spent refining and making the most of the Sierra’s EcoTec3 engines.

    “This is technology no other truck maker can match, and we offer it in every EcoTec3 engines, for every customer,” said Jordan Lee, GM Powertrain chief engineer. “It is a standard feature, so our drivers get our best and most sophisticated technology regardless of trim level.”

    Although they share only a handful of parts with previous Sierra engines, the new EcoTec3 V-6 builds on experience gained from millions of trucks and billions of real-world customer miles resulting from a half-century of leadership in V-6 engine development. In 1960, GMC debuted the first V-6 pickup truck ever and offered it exclusively through most of the ’60s.

    That engine, offered in various displacements starting at 5.0L, was designed with aluminum pistons, improved cooling and a stout crankshaft and bearings designed for unprecedented durability.

    “The family of V-6 engines introduced in 1960 was designed to last, and I’ve heard of some owners going more than 450,000 miles on the original engine,” said Donald Meyer, GMC truck historian. “They had really high torque and pulled loads well. GMC engineers know how to build durable, reliable engines that never quit.”

    Like the 2014 engine, the 4.3L V-6 introduced as standard equipment for GMC half-ton pickups in 1985 used geometry and engineering from the brand’s proven Small Block V-8. As with today’s V-6, engineers studied the combustion chamber, developing “Vortec” technology that swirled the air and fuel inside the engine to create a more homogenous mix, improving power and efficiency. That engine was the basis for new generations of engines through the 2013 model year.

    2014 Sierra models with the 4.3L EcoTec3 V-6 go on sale later this year with a suggested starting price of $25,085, including a destination charge of $995 but excluding tax, title, license and dealer fees.

    Sign in to follow this  


    User Feedback

    Recommended Comments



    305 lb-ft at what RPM? If it's like the 3.0 and produces its peak torque at red line, it won't fly.

    Don't see any mention of it in the press release at all.. Coming soon I guess?

    Share this comment


    Link to comment
    Share on other sites

    pretty spectacular that they wrung another 100hp out of the 4.3's. i havent read too much on them, are these based on the old 4.3's in anyway?

    Share this comment


    Link to comment
    Share on other sites

    No, cletus. The 4.3L V6 for 2014 is all new and has no relations to the previous 4.3L V6 that's been around since forever.

    Surprisingly, no mention of fuel efficiency ratings either, mud.

    Share this comment


    Link to comment
    Share on other sites

    No, cletus. The 4.3L V6 for 2014 is all new and has no relations to the previous 4.3L V6 that's been around since forever.

    Surprisingly, no mention of fuel efficiency ratings either, mud.

    Yeah.. I'm expecting we'll see those numbers come out sometime this or next week since GM is doing the media drives for the Silverado this week.

    Share this comment


    Link to comment
    Share on other sites

    A fine TRUCK engine. Proud of GM for sticking to what makes a truck... real.

    The Colorado/Canyon have their new top engine!

    Share this comment


    Link to comment
    Share on other sites

    An excellent engine for the trucks. For comparison, my dad had a 1992 Sierra base with the old 4.3L V6, and from what I can find it was rated for 160hp & 235 lb ft. It wasn't fast, and probably wouldn't have been any good for any real towing, but my dad would regularly get over 20mpg highway, and haul a truck bed FULL of livestock feed sacks. He got 340,000 miles out of it before it gave him enough issues to move on. If this new engine can get some good fuel economy and prove reliable, it'll make for some great base trucks.

    • Upvote 1

    Share this comment


    Link to comment
    Share on other sites

    Sounds like the Vortec V6 is now the Ecotec V6. I wonder how Eco it really is, the Ram gets 25 mpg, and if an automaker got smart and cut the weight and put a 3.0 liter turbo diesel in a pick up they could get 30 mpg highway or close to it. I wonder if this 4.3 L has better NVH characteristics than the Pentastar 3.6 or Ford's 3.7 liter, my guess is no,

    Share this comment


    Link to comment
    Share on other sites

    The current SIlverado 1500 starts @ 5300 lbs. I strongly agree this is too heavy, my old mid-'90s F-150 RC/LB started around 3900 lbs.

    Damn electronic BS- pulling some of that nonsense out would be a good start to slimming down.

    Share this comment


    Link to comment
    Share on other sites

    The current SIlverado 1500 starts @ 5300 lbs. I strongly agree this is too heavy, my old mid-'90s F-150 RC/LB started around 3900 lbs.

    Damn electronic BS- pulling some of that nonsense out would be a good start to slimming down.

    I doubt if the electronics weigh very much...

    Share this comment


    Link to comment
    Share on other sites

    Really? Well, it's not overall size, it's not an increase in steel, frames aren't that much different, there's more plastics & aluminum (don't the Silvies had AL hoods?), glass is thinner...
    ...from a Jeep forum, going from a 15" rim/tire to an 18" rim with identical (otherwise) tire size, same brands in both cases, raises weight only 55 lbs total....

    ...where else besides interior (insulation, sound deadening, consoles, 10 air bags, padded power telescoping sunvisors... & electronics? Electronic throttles, parking brakes, rearview cameras, front proximity warning, cruise, NAV, telemetrics, tire inflation, anti-lock brakes, TC, ESC, etc etc is the weight coming from? It's certainly not primarily from the basic structure.

    Share this comment


    Link to comment
    Share on other sites

    Really? Well, it's not overall size, it's not an increase in steel, frames aren't that much different, there's more plastics & aluminum (don't the Silvies had AL hoods?), glass is thinner...

    ...from a Jeep forum, going from a 15" rim/tire to an 18" rim with identical (otherwise) tire size, same brands in both cases, raises weight only 55 lbs total....

    ...where else besides interior (insulation, sound deadening, consoles, 10 air bags, padded power telescoping sunvisors... & electronics? Electronic throttles, parking brakes, rearview cameras, front proximity warning, cruise, NAV, telemetrics, tire inflation, anti-lock brakes, TC, ESC, etc etc is the weight coming from? It's certainly not primarily from the basic structure.

    Most of the electronics share the same modules (e.g., ABS, TC, and ESC or parking sensors, cameras, OnStar, and nav) and don't weigh very much. Some even help to save weight, like electronic power steering, which replaces a heavy hydraulic pump.

    I would explain the increase in weight, without a corresponding increase in size, through the over-engineering of components like the frame, powertrain, suspension, body, brakes, etc. Each new generation of trucks brings higher towing capacities (as much a function of the chassis as the powertrain) and quicker acceleration. A Silverado 2500HD weighs 1,000 lbs more than a 1500 of the same size. Perhaps the light-duty trucks of today are as capable as the HD trucks of yesteryear.

    Another thing is 4WD. It seems like more and more buyers are going for 4WD, and that usually adds 300+ lbs.

    Edited by pow

    Share this comment


    Link to comment
    Share on other sites

    I looked at the weight on the 2500HD : RC/LB 6.0L in 2013 is 5788. You have to jump to the Duramax in the same truck to get to 6469 lbs. - chevy website.

    Looks like I had picked the wrong truck (from the extensive portfolio) in my above post; site says the 1500 WT RC/LB 4.3L starts at 4596, not 5300. That is in keeping with pow's list above IMO, accounting for the strengthening since the Ford I referenced at 3900 lbs.... so I will back off of blaming electronics. The trucks aren't as heavy as I initially thought in baseline.

    Still, hopefully GM will continue it's newfound 'fitness regimen' and get the needle ticking downward some.

    IIRC, my F-150 was rated to tow 4900 lbs., and the chevy site says the same 1500 WT (with 3.23 axle) is good for 4700 lbs. Stronger truck... but the added weight takes away from towing capacity, it seems.

    Edited by balthazar

    Share this comment


    Link to comment
    Share on other sites

    Sounds like the Vortec V6 is now the Ecotec V6. I wonder how Eco it really is, the Ram gets 25 mpg, and if an automaker got smart and cut the weight and put a 3.0 liter turbo diesel in a pick up they could get 30 mpg highway or close to it. I wonder if this 4.3 L has better NVH characteristics than the Pentastar 3.6 or Ford's 3.7 liter, my guess is no,

    The 4.3 has balance shafts... it's probably about equal.

    Share this comment


    Link to comment
    Share on other sites

    IIRC, my F-150 was rated to tow 4900 lbs., and the chevy site says the same 1500 WT (with 3.23 axle) is good for 4700 lbs. Stronger truck... but the added weight takes away from towing capacity, it seems.

    The limitation you're seeing is purely power train related and nothing to do with the frame or weight. Simply opt up to the 5.3 V8 in the W/T (which also puts you into the 6-speed rather than 4-speed auto) with a 3.08 rear end and you can have 7400lbs. trailering or 9100lbs. with 3.42 rear end.

    Share this comment


    Link to comment
    Share on other sites

    IIRC, my F-150 was rated to tow 4900 lbs., and the chevy site says the same 1500 WT (with 3.23 axle) is good for 4700 lbs. Stronger truck... but the added weight takes away from towing capacity, it seems.

    The limitation you're seeing is purely power train related and nothing to do with the frame or weight. Simply opt up to the 5.3 V8 in the W/T (which also puts you into the 6-speed rather than 4-speed auto) with a 3.08 rear end and you can have 7400lbs. trailering or 9100lbs. with 3.42 rear end.

    Or 10,400 with the 6.2 and 3.73's :AH-HA:

    Edited by Daryl Z71

    Share this comment


    Link to comment
    Share on other sites

    You had the 5 liter Inline 6, no? It's basically a tractor engine and can tow anything.... the weak spot is the rear diff.... which my dad blows up every once in a while.

    Share this comment


    Link to comment
    Share on other sites

    Ya: 300, or 4.9L. TRQ was 265- not bad. Never had an issue with the rear (over 146K). 3.08 gears.

    All the domestic trucks are underrated WRT capacity, anyway.

    Share this comment


    Link to comment
    Share on other sites



    Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.
    Note: Your post will require moderator approval before it will be visible.

    Guest
    Add a comment...

    ×   Pasted as rich text.   Paste as plain text instead

      Only 75 emoji are allowed.

    ×   Your link has been automatically embedded.   Display as a link instead

    ×   Your previous content has been restored.   Clear editor

    ×   You cannot paste images directly. Upload or insert images from URL.




  • Similar Content

    • By Drew Dowdell
      General Motors announced a recall Wednesday of 3.46 million GM trucks and SUVs for a braking issue that has been linked to 113 accidents and 13 injuries.  The problem arises from a vacuum pump issue where the pump make less vacuum over time, thereby increasing the braking effort. The pump is lubricated by engine oil and can accumulate debris and oil sludge lessening the pump's effectiveness.
      The recall covered model years 2014 - 2018 of Cadillac Escalade, Chevrolet Silverado, Suburban, and Tahoe, and GMC Sierra and Yukon. 
      GM told the NHTSA that the pump design was only used during those years of manufacture. 
      In a smaller recall, GM is recalling 177,000 2018 Chevrolet Malibus with the 1.5-liter Turbo engine where an error in the engine control computer could disable the fuel injectors. 

      View full article
    • By Drew Dowdell
      General Motors announced a recall Wednesday of 3.46 million GM trucks and SUVs for a braking issue that has been linked to 113 accidents and 13 injuries.  The problem arises from a vacuum pump issue where the pump make less vacuum over time, thereby increasing the braking effort. The pump is lubricated by engine oil and can accumulate debris and oil sludge lessening the pump's effectiveness.
      The recall covered model years 2014 - 2018 of Cadillac Escalade, Chevrolet Silverado, Suburban, and Tahoe, and GMC Sierra and Yukon. 
      GM told the NHTSA that the pump design was only used during those years of manufacture. 
      In a smaller recall, GM is recalling 177,000 2018 Chevrolet Malibus with the 1.5-liter Turbo engine where an error in the engine control computer could disable the fuel injectors. 
    • By Drew Dowdell
      The GMC Acadia AT4 pricing has been released and it will start at $42,495, just $500 more than an SLT with all-wheel drive.  The next jump up is a big one, an astounding $7,000 more to get into an Acadia Denali.
      The AT4 has some advantages over the SLT and Denali.  First, it comes with AWD standard, and second and most importantly, it comes with a much more powerful engine as standard.  Both the SLT and Denali get the 2.0-liter turbo 4-cylinder rated for 230 horsepower and 258 lb-ft of torque. The AT4 however, gets the 310 horsepower 271 lb-ft V6. In addition to the extra hardware, the AT4 comes with black chrome on the grille, special wheels, and all-terrain tires.  The base model still has to suffer with a 2.5 liter naturally aspirated 4-cylinder making just 193 horsepower and 188 lb-ft of torque. 
      With the AT4 model being just a $500 increase over the SLT-1, and since it comes standard with the much more powerful V6, we thing GMC will sell a lot of the AT4 trim.

      View full article
  • Posts

    • Finally going to redesign or hopefully start from scratch on the archaic 12 or 13 year old Tundra platform they have now? How novel, Toyota. TMC might as well hang it up, same with Nissan the "new" Titan is a fugly POS F 150 knockoff that doesn't sell well at all and has numerous issues, stick to the throw away cars. Same with the ancient Tacoma platform, both are over 10 years on the same basic platform for these trucks with small refreshes and different front end clips. I have a buddy in FL who just bought his wife a new Lexus GX460 because that's what she wanted, an L on the grille, and it's also at least 10 years old with an also archaic and gutless 300 hp 4.6L V8, all OLD technology, but Toyota piles the cash on the hood because they know their appliances are older than dirt. They're resting on their laurels from the late 80's and 90's when they actually made pretty decent, reliable vehicles.      
    • They didn't do much to the outside, but the hybrid sounds compelling. 
    • Honda debuted the 2020 Honda CR-V today with a lightly refreshed exterior, but with a big announcement under the hood.  This is the first time Honda  will be offering the CR-V with a Hybrid Powertrain.  There are some other powertrain changes as well. Starting with the Hybrid, the system is a two motor hybrid that combines electric power with gasoline propulsion from a 2.0 liter DOHC engine. This engine boasts a thermal efficiency over 40 percent, the highest of any mass-produced Honda engine.  Peak total system horsepower for the Hybrid is now 212, up from 190 on the standard gasoline model. This is the same powertrain found in the Accord Hybrid. It is also the first time Honda has offered AWD on a hybrid vehicle. In times of low traction, a clutch can engage an electric motor to the rear wheels to help with grip.  Hybrid models are equipped with Acoustic Vehicle Alerting System, a small speaker on the front of the car that makes a noise for passers by while the vehicle is traveling in electric only mode. Previously, base model CR-V LXes got a 2.4-liter 4-cylinder. Now for 2020, all non-hybrid CR-Vs will come with the 190 hp 1.5-liter turbo unit. No matter which mode of power you choose, power flows to the wheels through a CVT.  On the safety front, the CR-V now comes standard with Honda Sensing, a suite of sweet safety technologies that include Collision Mitigation Braking System, Road Departure Mitigation, Adaptive Cruise Control, and Lane Keep Assist. Additionally, as an option, are blind spot information, rear cross traffic monitor, and auto high beam headlights.  EPA figures will be released closer to launch, but Honda is forecasting a 50% increase in fuel economy over the non-hybrid models. Non-hybrid production begins this fall and hybrid production starts in early 2020.    View full article
    • This one is a weird looking Canyon what is speculated to be Bronco test mule. https://www.motor1.com/news/360657/weird-colorado-test-mule-ford/ Seems Hertz has decided to start renting 480 and 720 hp Camaro's from Hendrick Motorsports. https://www.caranddriver.com/news/a29103703/hertz-chevy-camaro-rentals-hendrick-motorsports/  
    • 🤣  6x6 USA builds these trucks and I guess they were never designed to go up a small hill.     Seems pictures of it in camo and an oops uncovered shell hit the news. https://www.motor1.com/news/371560/ford-baby-bronco-spy-shots/ Seems Ford Bronco is testing in Australia https://www.motor1.com/news/368204/ford-bronco-test-mule-australia/
  • Social Stream

  • Today's Birthdays

    1. jg95z28
      jg95z28
      (54 years old)
  • Who's Online (See full list)

  • My Clubs

About us

CheersandGears.com - Founded 2001

We ♥ Cars

Get in touch

Follow us

Recent tweets

facebook

×
×
  • Create New...