I had a way bigger pinion on it and it still wasnt running like it shoulda been, was faster than it is with the 15t pinion but it shoulda been too fast. I need to look up the endbell timing settings for that motor cus I adjusted it when I got it cus it looked to me like it had the timing advanced all the way n I didnt want it running hot, I have all the marks lined up with one another now.