Trac off. 34psi in the tires.Left it in normal drive. No burn out. No brake stall , just put it to the floor when the tree dropped. I was shocked lol. Only made 4 passes. They were all real close to 77mph with the 9.29 being 77.22!
You get better trac prep and you should see close to the same. Not sure how much the 3.55s will hurt. I would also try the ERC and limit it to 2nd gear. It may pick up with the shorter ratio. If you just leave in in normal drive it skips from 1st to 3rd. I hate they lable these trannys 6 speeds.