Have a 2011 gmc z-71 crew 4inch lifted truck with 5.3 v-8
have stock 3.42 gears on it,have added 33.2 tall tires (old tires 31.6 inch) wanted to know what would be the best gear to go with either a 3.73 or a 4.10. right know the truck has a super chip flash pak,airaid intake,airaid throttle body spacer,magna flow exhaust.mpg is is very good considering the larger tires but i still looking for better take offs from start and more mid range power.i travel alot and dont do any hauling but the highway hills slow me down.need your best expert answer.