right now im running a 20 turn stock tamiya that is about 3 years old and it can almost pull a wheelie just sitting still and has plenty of torque for rock crawling so i think the 27t will be fine...the stalling i think is due to the thermal overload on the esc..i think b/c it old and not made for higher output motors it is heating up and shutting itself down..I think getting a new esc will solve the problem..Thx for your input..