brushless blackfoot

[The tamiya bandit]

i have just fitted a 3.5 turn brushless setup in my blackfoot but its not going as planned, it hardly moves off and is real slow. the battery terminals are getting really hot almost instantly, they are the tamiya ones.
as i go for give it some beans the esc makes a really high hum sound. and then the battery dies, its a 3700mah. the combo in question is a losi xceleron s .
i have just took out a speed passion inspire 17 turn brushless combo which had no problems at all. so could this problem be down to standard battery terminals that cant give the power the motor needs? thanks