Less than two seconds. It chewed it out and bent it.. rear diff spins free. Just like the front.. Haven't torn it down yet. But two rear shafts are now tossed.. nothing is binding.. thinking that I'm getting too much flex or something..finished it off being fwd did a couple passes. 75mph and whole time spinning. I left some great black marks! Uploading the few passes as we speak. I'll add it once it's uploaded.