RE: Mamba max for stampede.
If you run the Mamba 5700 in your Pede I suggest grabbing a 12t pinion and 90t spur if you dont have any. Gear it low and work your way up. Also get a temp gun and keep a eye on your temps. I also have my timing turned down to the lowest setting. The motor and ESC should NOT get above 200 degrees from what I understand. I wouldnt try running the stock gearing for sure.
Just thought I would throw his in, incase you didnt know already! I just setup a 5700 in a Pede not to long ago running 8 IB4200 cells.