* Spark Plug Gap: This is the most important gap. The recommended spark plug gap for a 1985 Ford F250 302 engine is typically between 0.035 and 0.040 inches. However, always consult your owner's manual or a reliable Ford parts catalog for the exact specification. The gap can vary slightly depending on the specific spark plugs used.
* Points Gap (if applicable): If your 1985 F250 302 *did* have a points ignition system (less likely), the gap would be significantly smaller, typically around 0.016 to 0.018 inches. Again, your owner's manual is the definitive source. Most likely, this engine used an electronic ignition.
To find the correct gap:
1. Check your owner's manual: This is the best place to start.
2. Consult a Ford parts catalog: A reliable parts catalog (online or printed) for 1985 F250 trucks will specify the correct gap for the spark plugs.
3. Examine the spark plugs: Sometimes the gap is printed on the spark plug itself.
In short: Focus on the spark plug gap (0.035-0.040 inches is a good starting point, but verify with your documentation). It's highly improbable that a 1985 model used points.
