can anyone tell me where i can find my gear ratio on the car?

 

easiest way i found.....basically bcuz previous owners may have changed from stock gear ratio and you couldnt tell by looking in th eglove box for the RPO code......is to jack up the rear of the car and leave the parking brake disengaged....then have someone mark a spot on the driveshaft....for every one turn of the tire, the driveshaft will turn the amount of the rear axle ratio. Example - tire turns once for every 3 1/2 turns of the driveshaft would be 3.42s. Hope this helps.