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● TRACKER Updated 17d ago · 26 sources tracked

GM Is Actually Putting an 8.3L Duramax Diesel in Its HD Pickups to Devour Ford

General Motors is launching an 8.3-liter Duramax diesel engine for its 2027 heavy-duty truck lineup, producing 555 horsepower and 1,230 pound-feet of torque. The powertrain is available for the 2027 Chevrolet Silverado HD and GMC Sierra HD. Gas models feature an enhanced 412-horsepower V8. Pricing for the 2500HD Crew Cab 4WD starts at $57,495 for gas and $68,895 for diesel, with the 8.3L diesel option costing $11,400. Chevrolet has increased Silverado HD prices by as much as $1,500.

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  • ✓ The 2027 heavy-duty pickup lineup includes an 8.3-liter Duramax diesel engine with 555 horsepower and 1,230 pound-feet of torque.
  • ✓ An enhanced 412-horsepower gas V8 is part of the updated powertrain lineup.
  • ✓ The 2500HD Crew Cab 4WD starts at $57,495 for gas and $68,895 for diesel.
  • ✓ The 8.3L Duramax diesel option is priced at $11,400.
🛡️ Source Corroboration: 26 independent reporting domains (100% confidence) ⏱ Read time: ~2 min

What changed

The 8.3L Duramax diesel is confirmed as an available option for the 2027 Chevrolet Silverado HD.

Live updates

  1. GM integrates 8.3L Duramax diesel into 2027 heavy-duty pickups

    General Motors is launching an 8.3-liter Duramax diesel engine for its 2027 heavy-duty truck lineup, producing 555 horsepower and 1,230 pound-feet of torque. The powertrain is available for the 2027 Chevrolet Silverado HD and GMC Sierra HD. Gas models feature an enhanced 412-horsepower V8. Pricing for the 2500HD Crew Cab 4WD starts at $57,495 for gas and $68,895 for diesel, with the 8.3L diesel option costing $11,400. Chevrolet has increased Silverado HD prices by as much as $1,500.

    Why it matters

    GM views these truck updates as primary profit drivers to offset pressures from inflation, tariffs, and electric vehicle costs. The move positions the company against competitors Ford and Ram in the heavy-duty segment.

    What is confirmed

    • The 2027 heavy-duty pickup lineup includes an 8.3-liter Duramax diesel engine with 555 horsepower and 1,230 pound-feet of torque.
    • An enhanced 412-horsepower gas V8 is part of the updated powertrain lineup.
    • The 2500HD Crew Cab 4WD starts at $57,495 for gas and $68,895 for diesel.
    • The 8.3L Duramax diesel option is priced at $11,400.
    • Chevrolet increased Silverado HD prices by up to $1,500.

    What to watch next

    • Official sales reports for the 2027 Silverado and Sierra HD
    • Detailed capability and towing specifications for the 8.3L engine
    Sources used for this update (4)
    1. www.thedrive.com — Chevrolet News - The Drive
    2. www.lancastermotor.com — The New Duramax Diesel in the 2027 Chevy Silverado HD
    3. www.motortrend.com — 2027 Chevy Silverado, GMC Sierra: GM’s New Profit Drivers
    4. truckdaily.com — TruckDaily | Pickup news, reviews, and buying guides
    confidence 100%

  2. GM Details Pricing and Specs for New 8.3L Duramax HD Pickups

    General Motors introduces its new 8.3-liter Duramax diesel engine delivering 555 horsepower and 1,230 pound-feet of torque for the 2027 heavy-duty pickup lineup. The updated powertrain lineup also features an enhanced 412-horsepower gas V8. Pricing for the 2027 Sierra HD starts at $57,495 for gas models and $68,895 for diesel versions on the 2500HD Crew Cab 4WD, while Chevrolet raises Silverado HD prices by up to $1,500. The 8.3L Duramax diesel option costs $11,400, positioning GM competitively against rivals Ford and Ram in the heavy-duty segment.

    Why it matters

    Heavy-duty truck buyers face rising acquisition costs as manufacturers adjust pricing structures alongside major powertrain overhauls. The introduction of higher-output diesel and gas engines allows automakers to target commercial and heavy-tow fleets demanding increased performance capabilities. Pricing transparency across trims helps fleet managers and retail buyers calculate total cost of ownership against established competitors.

    What is confirmed

    • General Motors is introducing a new 555-horsepower 8.3-liter Duramax diesel engine for its 2027 heavy-duty pickups.
    • The 2027 heavy-duty engine lineup includes an enhanced 412-horsepower gas V8.
    • The 2027 Sierra HD 2500HD Crew Cab 4WD starts at $57,495 for gas variants and $68,895 for diesel models.
    • The 8.3-liter Duramax engine option costs $11,400.
    • Chevrolet increased prices for Silverado HD pickup trucks by up to $1,500.

    Still unconfirmed

    • Truckers face potential strikes according to industry rumors circulating alongside coverage of fleet electrification and upfitting trends.

    What to watch next

    • Full pricing and trim availability disclosure across all remaining Silverado HD configurations.
    • Official fuel economy and towing capacity certifications from regulatory bodies.
    Sources used for this update (5)
    1. www.fleetequipmentmag.com — Gas Vs. Diesel: GM’s New Heavy-Duty Engines
    2. www.worktruckonline.com — Truckers’ Strike Rumors, Electric Fleet Lessons, and GM’s New ...
    3. daxstreet.com — Chevy Raises Silverado HD Prices Up to $1,500 and the New ...
    4. www.espn.com — Saudi Arabia insists Asian Cup remains on track despite Houthi attacks
    5. www.4wdtalk.com — 2027 Sierra HD Price: Gas and Diesel Trim Costs
    confidence 95%

  3. GM's 8.3L Duramax Diesel for HD Pickups Undercuts Rivals

    General Motors' new 8.3-liter Duramax diesel engine produces 555 horsepower and 1,230 pound-feet of torque. Priced below competitors from Ford and Ram, it leads the heavy-duty segment in performance. The engine's output is 66.9 hp/L, lower than Ford's 74.6 hp/L.

    Why it matters

    The updated engine is used in the 2027 Chevrolet Silverado HD and GMC Sierra HD. This development is significant as it shows GM's strategy in the heavy-duty truck market, competing with Ford and Ram. The market for heavy-duty trucks is highly competitive, with manufacturers constantly updating their engines and pricing.

    What is confirmed

    • GM's 8.3L Duramax diesel engine generates 555 horsepower and 1,230 pound-feet of torque.
    • The engine's output is 66.9 hp/L.
    • Ford's 500-hp 6.7L High-Output diesel reaches about 74.6 hp/L.

    What to watch next

    • GM's sales data for the 2027 Chevrolet Silverado HD and GMC Sierra HD
    • Ford's response to GM's new engine and pricing strategy
    • Ram's updated engine and pricing for their heavy-duty trucks
    Sources used for this update (2)
    1. carbuzz.com — 'Understressed On Purpose' - GM's 555-HP Mongoose Duramax Makes Less Power Per Liter Than Ford's Diesel
    2. carcody.com — GM Mongoose Duramax vs. Ford High-Output Power ... - Carcody
    confidence 90%

  4. GM Prices 8.3L Duramax Diesel Below Ford and Ram

    General Motors prices its new 8.3-liter Duramax diesel engine below competing heavy-duty diesel options from Ford and Ram. The heavy-duty powerplant generates 555 horsepower and 1,230 pound-feet of torque in the 2027 Chevrolet Silverado HD and GMC Sierra HD. Although the new Silverado HD carries a higher overall price tag, the upgraded diesel option undercuts rival pricing structures. This engine output surpasses Ford and secures top performance metrics for the segment.

    Why it matters

    General Motors introduced the 8.3-liter V8 diesel engine, named Mongoose and designated as the L6P, to outmuscle competitors in the heavy-duty truck segment. The new engine surpasses a 56-year-old record previously held by GM. Despite the power advantage, Ford maintains an edge in maximum gooseneck towing capacity.

    What is confirmed

    • The 8.3-liter Duramax diesel engine produces 555 horsepower and 1,230 pound-feet of torque.
    • The new 8.3-liter Duramax diesel upgrade costs less than competing diesel engines from Ford and Ram.

    What to watch next

    • Final dealer delivery dates for the 2027 Chevrolet Silverado HD and GMC Sierra HD models
    • Official payload capacity verifications following the pricing announcements
    Sources used for this update (6)
    1. tfltruck.com — News: We Have Official 2027 GMC Sierra HD Pricing: 8.3L ...
    2. carbuzz.com — The 2027 Silverado HD's 8.3L Duramax Is A Beast ... - CarBuzz
    3. fastlaneonly.com — Duramax 8.3L: 7 Details on GM's 555-hp Diesel V8
    4. tunerdepot.com — 8.3L Duramax L6P Specs, HP & Price – Tuner Depot
    5. www.thedrive.com — GM's Mega 8.3L Duramax Diesel Is Actually Cheaper Than the ...
    6. tfltruck.com — News: 2027 Chevy Silverado HD - We Have Official 8.3L Duramax ...
    confidence 100%

  5. GM Unveils 8.3L Duramax V8 Engine For 2027 HD Trucks

    General Motors has officially unveiled the 2027 Chevrolet Silverado HD and GMC Sierra HD featuring a new 8.3-liter V8 diesel engine named Mongoose. This heavy-duty powerplant produces 555 horsepower and 1,230 pound-feet of torque, surpassing competitor Ford and its 6.7-liter Power Stroke engine in output. The announcement arrives alongside pricing and powertrain updates for the light-duty 2027 Chevrolet Silverado 1500 and GMC Sierra 1500 models. While GM claims the power crown, Ford still maintains an advantage in maximum gooseneck towing capacity. The new engine breaks a 56-year-old record previously held by GM.

    Why it matters

    For more than two decades, GM relied on a 6.6-liter diesel engine for heavy-duty trucks, increasing output through higher boost rather than physical size. The introduction of the 8.3-liter Mongoose engine shifts that strategy to counter Ford directly. The internal codename and marketing approach take direct aim at Ford's Power Stroke, which carries the Scorpion moniker.

    What is confirmed

    • General Motors introduced a new 8.3-liter V8 diesel engine named Mongoose for the 2027 Chevrolet Silverado HD and GMC Sierra HD.
    • The new heavy-duty powerplant produces 555 horsepower and 1,230 pound-feet of torque.
    • The engine surpasses Ford and its 6.7-liter Power Stroke engine in output.
    • The new engine breaks a 56-year-old record previously held by GM.

    Still unconfirmed

    • Ford still tows 2,000 pounds more on its max gooseneck rating compared to GM's new offering.

    What to watch next

    • Independent third-party towing and payload testing to verify max gooseneck ratings between GM and Ford.
    • Official dealership availability and final pricing confirmations for the 2027 heavy-duty truck lineup.
    Sources used for this update (4)
    1. www.torquenews.com — GM's New 555 Horsepower Duramax Beats Ford On Power, But Ford ...
    2. carbuzz.com — GM's Biggest Engine Is The 8.3 Mongoose, And It ... - CarBuzz
    3. www.motorbiscuit.com — GM Brings Bigger Diesel Power With New 8.3L Duramax V8 for ...
    4. autos.yahoo.com — GM's 555-HP Duramax 8.3L V8: Power King, But Not Tow King
    confidence 100%

  6. GM Updates Heavy-Duty Lineup With 8.3L Duramax

    General Motors has officially unveiled the 2027 Chevrolet Silverado HD and GMC Sierra HD featuring a new 8.3-liter V8 diesel engine named Mongoose. This heavy-duty powerplant produces 555 horsepower and 1,230 pound-feet of torque, surpassing competitor Ford and its 6.7-liter Power Stroke engine in output. The announcement arrives alongside pricing and powertrain updates for the light-duty 2027 Chevrolet Silverado 1500 and GMC Sierra 1500 models, marking a major industry focus on high-performance heavy-duty trucks.

    Why it matters

    The rollout of the Mongoose engine targets the heavy-duty truck segment dominated by Ford's Power Stroke line. By securing top power and torque metrics, General Motors aims to capture commercial and heavy towing market share. This internal combustion update runs parallel to technology refreshes across the light-duty fleet.

    What is confirmed

    • General Motors revealed the 2027 Chevrolet Silverado HD and GMC Sierra HD with an 8.3-liter V8 diesel engine named Mongoose.
    • The Mongoose powerplant generates 555 horsepower and 1,230 pound-feet of torque.

    What to watch next

    • Dealer availability and exact showroom arrival dates for the 2027 models
    • Official towing capacity and payload ratings for trucks equipped with the Mongoose engine
    Sources used for this update (2)
    1. accounts.google.com — Sign in - Google Accounts
    2. www.gmfinancial.com — Contact GM Financial | GM Financial Customer Service | GM...
    confidence 100%

  7. GM Reveals 2027 Silverado HD and Sierra HD with 8.3L Duramax

    General Motors has revealed the 2027 Chevrolet Silverado HD and GMC Sierra HD equipped with a massive new 8.3-liter V8 diesel engine named Mongoose. This heavy-duty powerplant generates 555 horsepower and 1,230 pound-feet of torque, claiming the power and torque crown from competitor Ford and its 6.7-liter Power Stroke engine. The rollout of this internal combustion update arrives alongside updated pricing and next-generation engine technology for the light-duty 2027 Chevrolet Silverado 1500 and GMC Sierra 1500 models, underscoring a strategic industry push into heavy-duty performance capability.

    Why it matters

    General Motors operates as the largest automaker in the United States by total sales and manufactures vehicles through core divisions including Chevrolet and GMC. The company previously reported an emphasis on new V8 powerplants amid lackluster electric vehicle sales. This competitive escalation targets Ford and Ram directly within the heavy-duty truck segment.

    What is confirmed

    • The new Duramax 8.3-liter V8 diesel engine is called Mongoose.
    • The Mongoose diesel engine produces 555 horsepower and 1,230 pound-feet of torque.
    • General Motors is an American multinational automotive manufacturing company headquartered in Detroit, Michigan.

    What to watch next

    • Official release of towing and payload capacity figures for the 2027 heavy-duty truck lineup
    • Market response from Ford and Ram regarding the new 8.3-liter Duramax output figures
    Sources used for this update (4)
    1. autos.yahoo.com — GM reveals 2027 Silverado HD and Sierra HD with 8.3-liter diesel
    2. autos.yahoo.com — GM’s Monster 8.3L Duramax Just Took The Power And Torque Crown From Ford
    3. www.gmfinancial.com — MyAccount Login - GM Financial
    4. en.wikipedia.org — General Motors - Wikipedia
    confidence 100%

  8. GM introduces 8.3L Duramax diesel for HD pickups

    General Motors is equipping its heavy-duty pickups with an 8.3L Duramax diesel engine to compete with Ford and Ram. This move comes as GM emphasizes new V-8 powerplants amid a period of lackluster electric vehicle sales. The company is also introducing a 6.6-liter small block V-8 designed for power and reliability. These internal combustion updates coincide with the launch of the 2027 Chevrolet Silverado 1500 and GMC Sierra 1500, both of which feature updated pricing and next-generation engine technology.

    Why it matters

    GM is reviving traditional truck wars by focusing on high-displacement engines. This strategy shifts priority back to combustion power as EV demand softens. The updates target the high-margin heavy-duty segment where towing and hauling capacity are primary drivers.

    Still unconfirmed

    • GM is putting an 8.3L Duramax diesel in its HD pickups.
    • GM is using new V-8 engines to compete with Ford and Ram due to poor EV sales.
    • A new 6.6-liter small block V-8 is designed for power and reliability.
    • Next-generation GM pickup engines will not require a dipstick to check oil.
    • The 2027 GMC Sierra 1500 has seen a spike in starting prices.

    What to watch next

    • Official specifications and horsepower ratings for the 8.3L Duramax
    • Pricing details for the heavy-duty models featuring the new diesel engine
    • Customer delivery dates for the 2027 Silverado and Sierra 1500
    Sources used for this update (6)
    1. CNBC — GM touts new V-8 engines in revived ‘truck wars’ with Ford, Ram amid lackluster EV sales
    2. Road & Track — Deep Dive: GM’s New 6.6-Liter Small Block V-8 Has the Power, Promises the Reliability
    3. MotorTrend — 2027 Chevrolet Silverado 1500 Pricing and Features Revealed: More Is More
    4. Detroit Free Press — Why no dipstick is needed to check oil in GM's next-gen pickup engines
    5. The Drive — GM Is Actually Putting an 8.3L Duramax Diesel in Its HD Pickups to Devour Ford
    6. Car and Driver — 2027 GMC Sierra 1500 Starting Prices Spike with New Generation
    confidence 60%
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