It's not. Call a GM dealership, tell them your VIN #, and they can tell you the gear ratio it came with from factory.
There are different options for gear ratios , check the tag at the differential . If the tag is missing you can determine the ratio by dividing the number of teeth on the crown gear by the number of teeth on the pinion gear. Some crown gears have the ratio stamped on them.
2.833 is the rear-end gear ratio
The gear ratio is 3.60:1, this is for the front limited slip differential.
4.63
Limited Slip Differential 3.55 gear ratio
more than likely a 3.08 gear.
9/41
An axle ratio is a comparison of the number of ring gear teeth to the number of pinion gear teeth in a differential. For instance, a 3.55 gear ratio means that there are 3.55 ring gear teeth to every 1 pinion tooth.
It would depend on the differential gear ratio and engine horse power/torque.
what size truck? 1500,2500,3500?
Yes, if you change the gears in the differential that drive the axles and wheels. The lower the gear ratio, the faster the car will go with the same engine RPM. Example: A car with a 3.55 to 1 ratio differential will go faster than one with a 4.1 to 1 ratio differential at the same engine RPM.