Ignition Timing: The timing is *not* set by a gap, but by the distributor's mechanical advance mechanism and the initial timing set with a timing light. The initial timing should be checked and adjusted according to the specifications found in your car's owner's manual or a Ford shop manual specific to the year and model of your vehicle. These manuals will give you the correct degree of advance before top dead center (BTDC). This is usually in the range of 8-12 degrees BTDC but can vary. Don't guess; find the correct specification.
Points Gap: The points gap in the distributor is critical for proper ignition timing. The recommended gap is usually between 0.016" and 0.018". Again, *check your owner's manual or a Ford shop manual for the precise specification*. Using the wrong gap will lead to poor ignition performance.
Spark Plugs: The correct spark plugs depend heavily on your specific engine's compression ratio, which varies depending on the model of the vehicle. The owner's manual or a parts catalog should specify the exact spark plug type. Typical choices for the 1966 Ford 352 FE are often Autolite or Champion plugs, but the *heat range* (a number indicating the plug's ability to dissipate heat) is crucial and must be correct for your application. Using an incorrect heat range can lead to pre-ignition or fouling.
In summary: You absolutely MUST consult your owner's manual or a 1966 Ford 352 FE shop manual to find the precise specifications for your engine. These manuals will provide the correct information for ignition timing, points gap, and spark plug type. Using incorrect values can damage your engine.
