[Stripit]

My truck weighs 14,000lbs pulling 17,000lbs and yes with the 300hp set up and 6 sp Allison I slow up quite a bit going up anything of any height. I have the 4:44 rear axle ratio, 22.5 inch tires and it was ordered with 19.5 inch wheels and tires so the gear ratio may be wrong for the bigger tires? Not sure...