* Specific bearing type: Different manufacturers and bearing designs will have different torque specifications.
* Nut type: The type of nut used (e.g., flange nut, castle nut) will affect the torque.
* Whether a crush washer is used: A crush washer is often used and will require a different torque specification than a setup without one.
You absolutely must consult a factory service manual or a reputable repair manual specific to a 1977 Ford Mustang II. These manuals will provide the correct torque specifications based on the components in your specific vehicle. Using the wrong torque can lead to premature bearing failure, damage to the spindle, or even an accident.
Attempting to find the torque value from an unreliable source could be extremely dangerous. Don't risk it; get the proper information from a trusted source before working on your vehicle.
