* Engine Modifications: Has the engine been modified (cam, heads, intake, etc.)? Modifications significantly alter the optimal timing.
* Ignition System: The type of distributor and ignition system (points, electronic) will influence the initial setting.
* Fuel Type: The type of fuel (leaded, unleaded) affects the ideal timing.
Therefore, you cannot simply look up a number.
To find the correct timing:
1. Consult your owner's manual: This is the best place to start. It should give a base timing setting for your specific engine and vehicle.
2. Check a Ford repair manual specific to your vehicle year and engine: These manuals provide detailed instructions on how to set the timing correctly. They will likely include a procedure for setting the base timing and then advancing it to achieve optimal performance and emissions.
3. Use a timing light: You'll need a timing light to accurately measure the ignition timing. The procedure involves connecting the light to the spark plug wire and aligning the timing marks on the harmonic balancer with the indicator mark on the timing tab.
Without consulting your owner's manual or a repair manual, attempting to set the timing could damage your engine. The best approach is to find the correct documentation for your specific vehicle. If you don't have the manual, a local auto parts store or online resource may be able to provide it.
