Has anyone broken the 2009+ getrag rear diff. on an automatic? I'm running about 800 RWHP and have been babying the launches but want to push it harder this year with sticky tires but am concerned about the rear now. I'm reading a couple posts saying 650 hp but have yet to hear of these breaking. I've got DSS 1400 hp axles.
I'm worried about mine, too. I don't have quite your horsepower, (only 754 rwhp), but have a shade over 934 ft lbs torque. I have the G Force axles and an SHR automatic trans. Stock Getrag and drive shaft. So far.
I destroyed the stock Getrag with my 6 speed ProCharged 2010 Challenger, and it had 528 rwhp. I really expect to either have to put in a Wavetrac replacement, or a complete 8.75 straight axle rear end.
So far, with an easy launch, (1.9 60 foot time) my car has run 10.80's at 131 mph. I'm kind of afraid to launch it too hard...hate calling tow trucks!