ToddG59

Good Afternoon I have been reading the past post on gear options, I have a 2015 Denali supercharged that delivers 540ft lbs of torque to the ground at 4800 RPM,. The Denali has the 3.23 differential gears am considering 3.73 gears with a truetrac limited slip for towing enclosed car trailer with a Chevelle convertible. Watch a couple videos with a stock Denali towing a 7500LB load the truck was running about 4200 rpms going through the Eisenhower tunnel. Has anyone done any motor modifications to a 6.2 with 8L90 trans.