Honestly, I dont have anything for you guys right now, the real tune I have to load would limp my tranny before I got out of first gear. In 4hi the truck doesnt spin much because of all the weight over the front end, it chirps all four with the tow tune, my other semi-tranny safe tune should spin just a little. The tune that I have ready to load up in another truck ran 13.7@97 on 33s. After I get the built trans in this summer Ill come to play for real.
2007 CCSB Z71 VortecMax: Stock!