Is there any way i can tell what my rear end gear ratio is without removing the cover and counting?

 

rear the code on the axle tube and look it up i na manaul, works great if no ones changed the gear set. spin the drive shaft and count how many times it takes to make the wheel rotate. lot easier and more accurate to pull the cover, count teeth or read the ratio stamped on the gear, change the oil, nad do a general inspection while you're in it.

 

you can find out what the car came with by using your rpo codes..

the code are usually under the console lid or in the trunk compartment lid

and then plug them into the decoder..

https://www.thirdgen.org/cgi-bin/rpo/index

 

You can also use the VIN Decoder on this web site, if you are reasonably sure that it is the original rear end.