I have been running a 4074 2000kv in my Sc8E on 5s.And it has plenty of power to burn.
Soon I will have a 4065 2700 kv and a 3674 3300 kv and these I will run in my 4x4 Slash with a MMP from 2s to 4s.
SC8-E RCM MMM CC 1717
Slash 4x4 MMP CC SC 2400
SC RC8BE MMP Neu Tekno 1512/2D
Mugen MBX6 Eco MMP Neu Tekno 1515/1.5D