Ford’s 6.7L Power Stroke and Ram’s 6.7L Cummins have outperformed GM’s 6.6L Duramax in 2026 diesel engine rankings, ...
In 2026, Ford’s 6.7L Power Stroke diesel outpaces GM’s 6.6L Duramax L5P in raw output and towing capacity, while the Duramax retains an edge in smoothness, fuel efficiency, and ease of maintenance.
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