3670 controller..

I was planning on using the HV-110 and test it out for everyone, but I can't try it, because I realized I don't have a mechanical brake on my Savage. On a ~12 lb truck (just estimating) could I run 3670 with a 14XL and 4000mah 10s Lipoly? From what I've seen, the 3670 doesn't have a heatsink, so that's really the reason why I'm asking. Also, with 4000mah how much runtime can I expect with the 14XL, and will the temps be low?