GM 6.6L L8T Performance Upgrades Guide
GM released the 6.6L L8T gas engine in 2020, producing a solid 401hp and 464lb-ft. of torque. While these are great power numbers, they fall a bit short of the L5P diesel alternative. Fortunately, the L8T has some gas left in the tank, and a handful of performance upgrades can add some decent horsepower gains….