GM Taunts Ford As It Teases 8.3-Liter Turbodiesel V8 Truck EngineAutoblogSebastian CenizoMon, September 21, 2026 at 11:02 PM UTCAdd us on GoogleAutoblog and Yahoo may earn commission from links in this article.General Motors is about to reveal a new 8.3-liter turbodiesel V8 engine called Mongoose, and the name and accompanying teaser video both take cheeky jabs at the cross-town competition, specifically Ford. As the size and fuel of the engine indicate, the new Duramax motor is destined for heavy-duty pickups, specifically the 2027 Chevrolet Silverado HD and the GMC Sierra HD. Therefore, its direct rival would be the Blue Oval's 6.7-liter Power Stroke diesel, internally named "Scorpion." What's good at killing scorpions? You guessed it – a mongoose.GM's Mongoose Wants to Dominate ScorpionsGeneral MotorsThe video clip, embedded at the bottom of this article, starts in the desert by showing a scorpion walking in an oval shape, so right out of the gate, GM is taking shots at Ford. The voiceover talks up the attributes of the scorpion, saying it's "armored, dangerous, difficult to challenge. But nature always engineers a better predator." Is that last word another jab at Ford's engine naming conventions? Perhaps. As the voiceover says this, some thorny branches cast a shadow in the shape of the GMC wordmark. This is when we see the mongoose for the first time, and as the pupils of its eyes change into Chevy bowties, the voiceover calls it "bigger, stronger, more powerful" than the scorpion. And just before the mammal kills the arachnid, the clip freezes in what we assume may become a fender badge logo (see below).General MotorsAs the "8.3L DURAMAX" badge appears from beneath the swept sand, the engine is said to be "built to dominate," so let's see what its targets will be. GM didn't mention any specifications pertaining to horsepower, torque, or towing capacity, but the engine is obviously bigger than the 6.7-liter Ford unit. The teaser also says it'll be stronger and more powerful, so we can expect more than Ford's figures of 500 horsepower and 1,200 lb-ft of torque. As a result, GM's current Duramax 6.6-liter V8, which makes 470 hp and 975 lb-ft of torque, will go away.Autoblog's TakeGeneral MotorsAmerica loves big engines, whether for sports cars or the heavy-duty trucks that pull loads in the tens of thousands of pounds. It's why the Ram Power Wagon is finally available with a diesel for 2027, specifically the Cummins 6.7-liter turbo. However, with diesel prices now averaging above $6 per gallon across the nation (and as high as $8 per gallon in California), one can't help but wonder if there should be other options. But until alternatives like hydrogen and all-electric propulsion are more capable, more readily available, and more affordable than sturdy, old-school V8 turbodiesels, businesses and workers would rather rely on combustion through compression, and this new Mongoose V8 sounds like just what they've been asking for.AdvertisementAdvertisementThis story was originally published by Autoblog on Sep 21, 2026, where it first appeared in the News section. Add Autoblog as a Preferred Source by clicking here.