* Wheel lug nut size: Different sized lug nuts require different torque specifications.
* Wheel type: Steel wheels, aluminum wheels, and aftermarket wheels will all have different recommended torque values. Aluminum wheels often require less torque than steel.
* Specific model and options: Even within the F-250 lineup, variations in axles and options could impact the recommended torque.
You absolutely must consult your owner's manual. This is the only reliable source for the correct wheel lug nut torque specification for *your specific* 1978 Ford F-250. If you don't have the owner's manual, you can try:
* Online resources: Websites like Ford's official site or parts sites might offer owner's manuals for download (often for a fee).
* Ford dealership: A Ford dealership parts department may be able to look up the correct specification for your truck's VIN.
* Repair manual: A Haynes or Chilton repair manual for your year and model truck will also provide this information.
Using the wrong torque can be dangerous. Over-torquing can strip the lug nuts or damage the wheel studs, while under-torquing can lead to wheel loosening and potential loss of a wheel while driving. Always err on the side of caution and double-check your work.
