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.
3.55 gears
3.55 gears
http://www.off-road.com/trucks4x4/bigbroncos.tech/Bronco-Rear-Axle-Codes-and-Ratios/ArticleStandard/Article/detail/304644your gear ratio is 3.55
most likely 3.54 but look for the tag on the axle.
most 1992 Eddie Bauer bronco's are 3.55 in the rear and 3.54 in the front. that's what mine is with a 351w (5.8).
3.43 Automatic and 3.73 Manual
The stock gear ratio for a 1984 Ford Bronco II Eddie Bauer edition typically came with a 3.55:1 differential gear ratio. However, depending on the specific configuration and options chosen, some models may have also been equipped with a 3.73:1 ratio. It's always best to verify the specific vehicle's build sheet or rear axle tag for accurate information.
1978-1979 Ford Bronco driveshafts
The gear ratio of a train, also known as its speed ratio, is the ratio of the angular velocity of the input gear to the velocity of the output gear. The gear ratio is very important when it comes to physics.
Incorrect gear ratio in first gear.Incorrect gear ratio in first gear.
The ratio is the driven gear divided by the driver gear. This determines the gear ratio.
To know for sure, You need to remove the big metal plate on the rear end housing and count the # of teeth on the BIG round gear / Ring gear. Then count the teeth on the small round gear / pinion gear that sets deep in the housing and runs on the big gear. Then divide the small # into the high # and that will be you gear ratio.