GM has spent years watching Ford make the biggest torque number in the heavy-duty pickup segment. Its answer is more ...
GM calls it the "Mongoose," and it promises to beat Ford's "Scorpion" 6.7-liter Power Stroke that makes 500 hp and 1,200 lb-ft of torque.
New diesel V8 will be GM's biggest passenger vehicle engine ever, just as diesel fuel prices soar to excessively high record prices.
GM's new 8.3-liter Duramax Mongoose targets Ford's Power Stroke and Ram's Cummins, but record diesel prices could hurt HD truck buyers at the pump.