On the opposite end of the spectrum was the massive 7.4-liter 454 V8 which was much more powerful, but also thirstier, with some drivers getting a best of 12mpg unladen, and 8 when towing. At the time, the most popular option was the TBI 350 gas engines, and they were making around 190hp and could (under ideal conditions) achieve roughly 17 MPG. Now, fast forward to present day, and the Duramax has had to undergo very few changes compared to the competition, and are still at the head of the pack! With all that said, lets take a closer look at each generation of diesel engine that's been graced behind that Bowtie emblem and see what they're all about! GM 6.5 1992-2000 In the early 1990’s GM saw the need for a more fuel-efficient truck engine. Then, they backed it all up with an Allison transmission that seemed indestructible compared to Dodge's 47RE and Ford's 4R100. At the time, common rail fuel injection was still in the testing phases at Cummins, and it wasn't even a thought for Ford (International). The LB7 engine set to change everyone's notion of GM's stance in the light duty diesel market, and they haven't looked back since. Previous to the Duramax, their 6.2L and 6.5L offerings faltered behind the Powerstroke and Cummins offerings in terms of overall power and reliability. 2016 - 2022 Canyon/Colorado 2.8L Duramaxīrowse Duramax Parts Online by Year and Generation General Motors made some HUGE waves in the diesel market in 2001 with the release of the first Duramax powered Chevrolet and GMC's.
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