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I am looking for a brushed motor gearing chart for my new truck. Couldn't find it in the PDF's AE has on their website for the 10T. Usually they have one in the instruction manual but couldn't find it.

With mod motor i run 17 to 21 pinion stock 20 to 24 pinion its a trial an error haft to see how hot the motor is after running.If you spit on it an it sizzles its way too hot ,go down a couple teeth if is,don

Also, 87 stock spur.

The original Stealth transmission ratio is 2.25:1, so you can use math (somehow) to compare the suggested ratios to the T4, which uses a 2.6:1 internal ratio.

Ryan, as a general rule, I drop 4 teeth on the pinion when going from "modern" trans (2.6) to the 2.25 stealth.

So if a T4.x gearing is 23/81, start with 19/81