4 wheelin' with the Duramax diesel
From Christine & Scott Gable, former About.com Guide
With the transfer case in low range and the Allison 6-speed locked in 1st gear, the big Duramax took the Silverado up the hill at just barely above idle. The beauty of diesels is their tremendous low rpm torque. This guy makes 660 lb-ft @ just 1600 revs.
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