[coolhandcountry]

The 7xl will have more torque than your 3100xl. I don't know if you will get the run time out of your motor that you want. I currently run a 9xl. I get about 25-30 minutes bashing around. I run 3300 and 3700 gp batteries. I tried the xl 2000 in my emaxx. The 7xl did much better. I just not sure if you going to get the run time your looking for. If you run the lipo 6000 packs. That will bump your run time up. Hope this helps you. I know you a lehner man. Maybe you could get the 1940 or so. Not sure which one is equivalant to 7xl. Good luck.