Crawl under the vehicle and write down the number you find on the rear axle housing. Any GM dealer can provide the ratio with this number. You can also do it the old fashion way. Jack up the car, put the transmission in neutral, rotate the wheel 360 degrees and count the number of times the drive shaft turns.
If you call a GM dealer and give them the VIN# they can tell you what gear ratio you have.
3.73:1
To determine your diff ratio, remove the cover, count the teeth on the ring gear, then count the teeth on the pinion gear. Divide the ring gear number by the pinion number.
It should be a 342.
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.
GM8.5 inch 30 spline 10 bolt 3.73 gear ratio , 41x11
There are three ways to find a gear 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.
97 Chevy Z71 truck will not shift into third gear.
Nothing really. But remember that the front and rear ring and pinion MUST be the same gear ratio. You didn't say if the Z71 was a 4-wheel drive. If it is not then you will either kill the engine power are may even increase the power.That depends on the gear ratio in the 3/4 TON rear end and the 1/2 ton rear end. / DIFFERENCE Low gear verses high gear. Low gear= Power. High Gear = No power.
All you need to do is write the VIN# down and call a GM dealer and ask for parts. Tell them you would like to know the gear ratio in you truck, and that you have the VIN# Thay will tell you what it is.
it is a gear ratio 3:73 rear end limited slip
the rear end is prob 3:42 limited slip rear end