Originally Posted by
JEFFs SC10
I go by real experience, not theory like some other people LOL. Gearing up will most likely solve your problem. Try it, a pinion cost what $3? LOL
Its gonna make your truck a helluva lot quicker too.

Gearing up will make it faster
Gearing down will make it quicker
Still unsure about the whole temp thing... in my E-maxx and my Rally car, it was the opposite... If I went higher on the pinion, the motor got hotter...
I'll be trying out a 16T on mine tonight (if the rain stops...)
I hacked up an allen key so that I could put the 15, 16, 17T on without taking the motor out... it's a bit of a fight, but I'd rather do that than start drilling out my chassis or milling out the motor plate...
(cut off all but about 1/4" from the short side and you can slide it in the gear housing...)