What is stock rear end ratio on a 1984 Chevy classic caprice?

The stock rear end ratio for a 1984 Chevy Caprice Classic varied depending on the engine and options chosen. There wasn't a single standard ratio. You'll likely find either a 2.73, 3.07, or 3.23 ratio. To know for sure what ratio is in *your* specific car, you need to:

* Check the vehicle's data plate (usually located on the driver's side doorjamb). This might list the axle ratio.

* Look at the casting number on the differential housing. This number can be cross-referenced with parts catalogs or online databases to determine the ratio.

* Physically calculate the ratio by counting the ring gear and pinion gear teeth. This requires removing the cover from the differential.

Without access to your specific vehicle, I can only give you the most common possibilities.