Probably into the mid/high hundreds of amps (maybe even 1000 if very short duration). Really, it's limited by the battery, copper, duration of the burst, etc. As you can imagine, there are too many variables for CC to list and still have any meaning to the user.
THe burst does'nt depend a lot of the motor, it depends of the setup. If your truggy is geared for 30 mph the spikes will be very low, but if you gear it for 80mph, it's an other story...
Inferno VE MMv3 NEU-CC 1515/1Y 4S "Flying machine"