I've been running the 1520 in my LST XXL for a few weeks now on 6s. Geared for 45mph, I ran 2 packs through it yesterday back to back and at the end of the second battery, my motor temp was 117 degrees. Temp was 24 degrees (Celsius) up here in Canada. The truck can handle the power very nice, however my diff output cups are starting to notch out where the dogbones hit. I'm thinking about picking up some of Mike's Hardened diff cups (I think I saw some?).
I love this motor. It makes me smile. I couldn't imagine this motor in a Savage though, what a waste