A Ford Falcon Owner's Guide to Spark Plug Replacement (1960-1970)
Get your classic Falcon's engine running strong by choosing the right spark plugs for your specific motor.
- Match new spark plugs to your Falcon's specific engine (e.g., 170, 200, 289).
- Stick with standard copper core plugs from reputable brands like Autolite or NGK for best results on a stock engine.
- Always manually set the spark plug gap to 0.035 inches before installation.
- Replacing spark plugs is an easy and inexpensive maintenance task you can do yourself in under an hour.
Symptoms of Failing Spark Plugs
When your spark plugs are worn, fouled, or damaged, your Falcon's engine won't run as it should. The signs are usually easy to spot. You might notice a rough idle, engine hesitation or stumbling during acceleration, or a general loss of power. Other common symptoms include reduced fuel economy, difficulty starting the engine, and engine misfires, which can feel like a rhythmic shudder or pop. Since these cars don't have modern computer diagnostics, you have to rely on how the car feels and sounds.
🎬 Watch: How to diagnose a rough running Ford FalconChoosing the Right Aftermarket Spark Plug
For a 1960-1970 Ford Falcon, sticking with the basics is usually the best approach. These engines were designed for traditional copper core spark plugs. While expensive iridium or platinum plugs are available, they often provide little to no benefit in a classic ignition system and are not worth the extra cost.
The most important factor is matching the plug to your specific engine. The Falcon was offered with many engines over the years, from the small 144ci six-cylinder to the 289 and 302 V8s. 🎬 See this walkthrough for changing spark plugs on a classic Ford Each requires a different spark plug with a specific 'heat range'. Using the wrong plug can lead to poor performance or even engine damage.
Always Check the Gap
Unlike modern cars, spark plugs for your Falcon must be manually 'gapped' before installation. This means setting the distance between the two electrodes. For nearly all Falcon engines, the correct gap is 0.035 inches. Use a feeler gauge or gapping tool to ensure this measurement is exact.
🎬 Watch: How to gap a spark plug properlyBrand Recommendations
Not all spark plug brands are created equal, and classic Ford owners have clear favorites.
- Standard Replacement (Recommended): Autolite and NGK are the top choices. Ford originally used Autolite plugs, so they are an excellent OEM-style replacement. Many Falcon owners and mechanics trust Autolite for reliability and performance. NGK is another high-quality option, with their V-Power plugs being very popular for classic Fords.
- Performance Upgrade: If your Falcon has engine modifications like an upgraded ignition system or performance carburetor, brands like MSD and Accel offer plugs designed for higher performance applications. For a stock or lightly modified engine, these are generally not necessary.
- Budget-Friendly: Champion plugs were also an original equipment supplier for some years. However, they have a mixed reputation in the classic Ford community, with many owners reporting better results after switching to Autolite or NGK.
New Aftermarket Spark Plug Cost for 1960-1970 Ford Falcon
| Category | Price Range (Per Plug) | Notes |
|---|---|---|
| Standard (Autolite, NGK) | $3.00 - $8.00 | The best choice for most stock vehicles. Offers reliability and performance consistent with original specifications. |
| Performance (MSD, Accel) | $9.00 - $25.00+ | Recommended for engines with significant performance modifications. |
| High-End Iridium/Platinum | $15.00 - $80.83 | Generally not recommended or necessary for the Falcon's original ignition system. |
Common Ordering Mistake
The most common mistake is ordering plugs without knowing your Falcon's exact engine size. A spark plug for a 170ci inline-six is different from one for a 289 V8. Always confirm your engine displacement before purchasing to ensure you get the correct part number and heat range.
Frequently Asked Questions
Which spark plug brand is best for my Falcon?
For a stock or near-stock engine, Autolite and NGK are highly recommended by Falcon owners. Autolite was an original supplier to Ford, making their copper core plugs an authentic and reliable choice.
What does 'gapping' a spark plug mean?
Gapping is the process of setting the correct distance between the center and ground electrodes of the spark plug. This gap is crucial for a strong, consistent spark. For 1960-1970 Falcons, this gap is typically 0.035 inches. This adjustment must be done with a special tool before you install the plugs.
Do I need special 'V8' spark plugs?
While there isn't a plug labeled 'V8', the plugs for a V8 engine (like a 289) are different from those for an inline-six (like a 200). You must buy the specific part number recommended for your engine, whether it's a V8 or a six-cylinder.
How often should I change my spark plugs?
For a classic car using standard copper spark plugs, a good interval is every 10,000 to 20,000 miles or every few years, depending on how much you drive. Since they are inexpensive, changing them is good preventative maintenance to keep your Falcon running smoothly.
Are there any recalls for Falcon spark plugs?
No, there have been no recalls issued by the NHTSA for spark plugs on the 1960-1970 Ford Falcon.
Helpful Videos
Technical Specifications
OEM Part Numbers: Autolite BF82 Autolite BF92 Champion F-14Y Motorcraft SP-431-X
Spark Plug Gap: 0.035 inches
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.