I actually wonder if it will. Got to realize a couple years ago when the GT500 went to 662 no one tried to compete. Camaro is mid 500's we weren't even at 500hp. They thought they were the top. So, Dodge waited, tested, tuned, etc. They also waited until Ford pretty much confirmed that there was no GT500 replacement and that they were going to the GT350. Which is the direct competition to the Z28. Both Ford and Chevy dropped major HP in favor of amazing handling. So, Dodge then came out with 707hp. They spent years working on this motor and setup. For Ford or Chevy to come up with a bigger engine, they would have had to be working on this for a while to, but they haven't been. And, in the next couple years 2017/2018, the next CAFE regulations kick in with a needed boost in MPG. So, i don't think you will see a car directly from Ford of Chevy to beat the Hellcat. Now, if the future for them goes to hybrid etc that's different. But for pure HP from a engine, i tihkn Hellcat will take the crown.