I believe stock pinion is 13t (32p), you might look into going down to something like an 11t (which is stock/default for a brushless Stampede 4x4) or even a 9t (which is stock/default for a brushed Stampede 4x4). You can always put the bigger pinion back in once you are sure you have temps under control (or once the weather gets cold again!).
(Last edited by GotNoRice : 7.21.16 at 12:33 pm)
Slash 4x4 Monster Truck (Castle MMP/2400kv)
Stampede 4x4 (Castle SV3/3800kv)
Rustler VXL (Velineon/3500kv)
Associated B4.1 (Castle SV2/Reedy 3300kv)