Relocation Bracket Settings
however, if that is the case, most likely the culprit is the stiffer rear sway bar and the weight reduction in the rear. before, you had more weight on the rear, which will place more downforce on the rear wheels, adding traction. also, with a larger rear sway bar, the rear end resists articulating more than it used to, so instead of soaking up some power on launch with the articulation (which adds traction by not "shocking" the tires loose as easily), your tires just spin instead, and you lose time on the 60'.
get stickier tires and hope your rear end doesn't grenade (assuming you're still on the stock 10-bolt).

