What kind of rear diff you have is also going to make a big difference-didn't see it in your sig (3.73s or 4.10s) as well as if you upsized your tires-mine are 235s which I think are stock, and I can't keep them from spinning without any power upgrades.

 

I have 4.10's and i think the anti-spin rear, not sure what that does though

 

Buy you a smarty and put it on the wild torque and bet you break tires loose anytime you want to.

 

and your 47re....LOL