If 420 horses from a naturally aspirated 6.2-liter small block are not enough, Hennessey can supercharger your 2025 GMC Yukon to 600 ponies ...

Under the hood sits a 6.6-liter Duramax LMM diesel V8, mated to a six-speed ... Read: C2 Corvette With ZR1’s Supercharged LS9 Is A Really Spicy Restomod It was built and tuned by Hausmann ...

Fuel economy is another strong suit of the Duramax diesel engine. We finished out the year with an average of 19.1 mpg. If you remove the more than 3,000 miles of towing, that figure jumps to 20.8 ...