[Finnster]

IDK, prolly depends on the overall amt of power you try to put thru it and how you drive it. I had my XL running a 1521 on 8S all last year and never had any issues with the tranny. 95% of my probs were diff related.

OTOH, I don't drive too insane-o, and the kv of the motor was only 1050. It was more speed than the savage was all that good at handling anyway. With the 40 series mashers and the 4WS, much more than ~45 the truck handled like a elephant on stilits. The tires ballooned a lot and the rear end would tend pull (and that was before the 4ws mod. Never could get it dialed out, even putting it on a setup board and aligning all the turnbuckles precisely. I am aiming for a big brusing MT rather than a spd demon