With proper cooling, and BIG BIG BIG ESC everything is possible. But without cooling a 1527/1Y should do anyway some speed runs at more than 100mph without overheating and with the proper ESC. All we need to do is to check the temps.
Inferno VE MMv3 NEU-CC 1515/1Y 4S "Flying machine"
This is from a thread about a savage. I know there not firm numbers but it might give you an idea.
In a 1:8 scale buggy, the power needed during acceleration to top speed (40mph) was 120-130A on 4S. The savage is a lot heavier so the measurments correspond.
Inferno VE MMv3 NEU-CC 1515/1Y 4S "Flying machine"