Teases New 8.3-Liter Duramax 'Mongoose' Engine Just As Diesel Crosses $6.50 Per Gallon Nationwide - Jalopnik

GM is teasing a new turbocharged 8.3-liter Duramax diesel it calls the “Mongoose” just as diesel prices hit record territory in the U.S. The teaser, shared on YouTube, doesn’t include official output or towing figures, but the article notes the current heavy-duty GM Duramax uses a 6.6-liter V8 making 470 horsepower and 975 lb-ft. With proper equipment, that setup can tow up to 36,000 pounds, and the expectation is that the larger 8.3-liter will improve performance. The bigger issue is fuel cost. AAA reports the national average for diesel at $6.51 per gallon, with California averaging $8.42 and even Texas—typically cheaper—at $5.97. The post suggests prices aren’t likely to ease soon.