Just bought a 8 3/4 have a few questions?

"open" means non-locking differential. In an open differential power is sent to the axle with the least amout of resistance (traction). On a "locking differential" the power is sent to the axle with most amount of resistance (traction) or at very least the same amount of power to both axles. Asking questions is one way how people learn so don't fell bad about asking.


Chuck