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GM says its new 8.3-liter Duramax diesel will cost $11,400 over the standard gasoline V8, less than the $12,495 diesel-option prices cited for comparable Ford and Ram heavy-duty pickups. The engine is rated at 555 horsepower and 1,230 lb-ft of torque, but GM’s online configurators do not yet show 2027 trucks, and the full vehicle pricing comparison remains limited.
General Motors has set the option price for its new 8.3-liter Duramax diesel at $11,400 over the standard gasoline V8, below the $12,495 diesel-option prices cited for comparable Ford and Ram heavy-duty pickups. The announcement puts a price on GM’s new high-output engine, rated at 555 horsepower and 1,230 lb-ft of torque, though full 2027 model configurations were not yet available in GM’s online tools.
The new engine costs $1,410 more than GM’s outgoing 6.6-liter diesel option, according to The Drive’s report. In return, its stated output is 85 horsepower and 255 lb-ft of torque higher than the older L5P Duramax. Compared with the standard gasoline V8, the report says the 8.3-liter adds 143 horsepower and 758 lb-ft of torque.
The Ford 6.7-liter Power Stroke is rated at 500 horsepower and 1,200 lb-ft, while the Ram 6.7-liter Cummins is rated at 430 horsepower and 1,075 lb-ft, according to the report. Both diesel options were listed at $12,495, making them $1,095 more than GM’s announced engine option. These figures compare option prices, not the final prices of identically equipped trucks.
The lower option price does not make every GM truck inexpensive. The Drive cited a GMC Sierra HD AT4X costing about $102,000 with the diesel. The outlet also reported that Chevrolet and GMC’s online build-and-price tools did not yet allow shoppers to configure 2027 models, so the announced option price could not be checked against a complete online vehicle build at the time.
A Lower Price for More Output
The pricing gives truck shoppers a concrete point of comparison: GM’s announced diesel upgrade is $1,095 less than the Ford and Ram option prices cited in the report, while its published horsepower and torque figures exceed those rivals’ ratings. That could make the Duramax an appealing choice for buyers weighing engine capability against the added cost of a diesel.
Still, an engine option’s price is only one part of a heavy-duty truck purchase. Trim level, equipment, incentives and total vehicle price affect what a buyer ultimately pays. The comparison supports a specific conclusion about the listed diesel options, not a claim that every GM truck costs less than a similarly equipped Ford or Ram.
Duramax 8.3L diesel engine for trucks
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How the Duramax Stacks Up
GM’s new 8.3-liter unit is positioned above the company’s outgoing 6.6-liter L5P Duramax, with the reported output increase paired with a higher option price. The Drive described it as GM’s new top diesel offering and reported that the engine is intended for Chevrolet and GMC heavy-duty pickups.
Among the cited competitors, Ford’s 6.7-liter Power Stroke has the closest output to the new GM engine, while Ram’s 6.7-liter Cummins is lower on both rated horsepower and torque. The report’s central comparison is therefore twofold: GM’s announced option is less expensive on the listed figures and carries higher stated output. It does not supply a full breakdown of comparable truck trims, equipment or final transaction prices.
“The 8.3-liter diesel will be an $11,400 option over the standard gas V8.”
— General Motors, as reported by The Drive
Full 2027 Pricing Still Pending
The reported price comparison is based on announced engine-option figures. Chevrolet and GMC’s configurators did not yet support 2027 model-year builds, according to The Drive, leaving shoppers without an online way to verify the option in a complete configuration. The report does not provide matching final prices for trucks with equivalent trims and equipment.
It is also not clear from the cited material when 2027 configurators will go live or whether the stated option price will vary by model, trim or other package requirements. No independent test results or real-world fuel-economy figures for the new engine are included in the report.
Watch for Configurator Updates
The next useful pricing check will come when GM’s 2027 Chevrolet and GMC build tools allow shoppers to select the 8.3-liter Duramax. Those listings should clarify how the option applies across models and trims and let buyers compare complete configurations more directly.
Until then, the confirmed development is the announced $11,400 option price and the engine’s published output figures, as reported by The Drive. Buyers considering a heavy-duty diesel can use those numbers as an initial comparison, while treating total truck pricing and the fit of particular configurations as unresolved.
Key Questions
How much does GM’s new 8.3-liter Duramax option cost?
GM announced an $11,400 option price over the standard gasoline V8, according to The Drive.
How much power does the new Duramax make?
The engine is rated at 555 horsepower and 1,230 lb-ft of torque in the source report.
How does its option price compare with Ford and Ram?
The Drive cited $12,495 for the Ford 6.7-liter Power Stroke and Ram 6.7-liter Cummins options. On those figures, GM’s option is $1,095 less; this is an engine-option comparison, not a comparison of complete truck prices.
Can buyers configure a 2027 GM truck with the engine now?
The cited report said Chevrolet and GMC’s online configurators did not yet allow shoppers to build a 2027 model-year truck. The timing of an update was not stated.
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