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.
no
YES.
It should be a 700R4
1900pounds
31/10.50/15
no, they have different bellhousings and oil pans
they work fine in my 1984 3/4 ton Chevy with a 383 stroker.
Yes.
replace the worn parts.
One can find reviews about a 1984 Chevy Custom Pickup Truck on Kijiji. On Kijiji, one can find reviews of almost anything, including big pickup trucks.
The rear brakes on a 1984 Chevy truck are drum brakes.
its likely a 2.73 or police edition 3.08