Episode 69 - What is the Axle and Differential‪?‬ The Broncast - Ford Bronco

The engine makes power. That power is sent from the engine to the transmission. Then the power comes out of the transmission and goes to a transfer case that sends the power to the front or the back of the vehicle through the driveshafts to the axles. Inside the axles are another set of gears called a differential, that sends the power to the tires.
Toms Offroad Options:
Dana 44 - https://tomsoffroad.com/ford/66-77-bronco-dana-44-traction-devices
Ford 9 inch - https://tomsoffroad.com/ford/66-77-bronco-ford-9-traction-devices
Selectable Lockers:
Yukon Zip Locker - Air engage locker
ARB Air locker - Air engaged
OX locker - Air or Manual (cable) shift
Limited Slip:
Yukon Grizzly Locker
Dana 44 Power Lock
Open:
Open Carrier (but you probably already have one in your Bronco)