I recently purchased a car that had the Evo Gsr 64 crown tooth ring gear close gear ratio transmission. I recently was curious as to whether the car had the correct 3.909 rear end in it. So below you will see two videos of how I verified that I had the correct rear end in the car. This method can be used to verify whether you have an automatic rear end or manual rear end. I searched for days high and low and the couldn't find any way to verify my rear. the other only way to verify which rear end ratio you have is to pull off the rear end cover and count the tooth.
Forgot to mention you need to if you are doing it by yourself place your cell phone under the car and video tape the driveshaft revolution.
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Forgot to mention you need to if you are doing it by yourself place your cell phone under the car and video tape the driveshaft revolution.