There are four ways to find a ratio.
1 A dealer can normally tell from the vin number.
2 There are normally tags or labels on the axle that have part number, gear ratio, and fluid requirement
info.
3 You can count how many times you have to turn the driveshaft to get one complete turn of the tires.
4 You can divide the number of teeth on the ring gear and divide by number of teeth on the pinion.
There are four ways to find a ratio. 1 A dealer can normally tell from the vin number. 2 There are normally tags or labels on the axle that have part number, gear ratio, and fluid requirement info. 3 You can count how many times you have to turn the driveshaft to get one complete turn of the tires. 4 You can divide the number of teeth on the ring gear and divide by number of teeth on the pinion.
85w90 will be just fine.
85W90 gear oil.
3.90
2.833 is the rear-end gear ratio
Count the # of teeth on the ring gear. Now count the # of teeth on the pinion gear. Now divide the small # into the big # and that will be your gear ratio.
All you need to do is call a Chevy dealer and give them the VIN# and asked them what the gear ratio is in your truck and they will tell you what the factory gear ratio is.
4.10 ratio
More then likey it has a 3:42 gears. But the way to know for sure is to COUNT the teeth on the ring gear and the pinion gear and then divide the pinion into the ring gear and that will tell you for sure.
3.73
3.42
The stock gear ratio for a 1995 Chevy Blazer is 3.73. This provides a good balance of fuel economy and power to the rear wheels.