Originally Posted by
mfgranizo
In the main straight yes
Yes I am in the higher throttle range
Yes I have backlash and the car disconnected, roll free
If I am understanding this right, you are in your higher throttle range around most of the track, not just the straight.
Based on that, you need to go with a bigger pinion size. Target to top out towards the end of the longest straight.
From there, see how temps are and adjust gearing down. It should get your overall motor temps down.