Choosing the Best Spark Plugs for Your 1987 Chevrolet V10
Get the right spark plugs for your classic Chevy V10 and avoid common performance issues.
- For stock 1987 V10s, stick with standard copper spark plugs from brands like ACDelco or NGK for best performance.
- Avoid expensive platinum, iridium, or multi-electrode plugs, as they can cause running issues in these TBI engines.
- Always check and set the spark plug gap to your vehicle's specification (usually 0.035") before installation.
- Replacing spark plug wires at the same time is a crucial step for a complete and reliable ignition tune-up.
Symptoms of Failing Spark Plugs
When your spark plugs are wearing out, your truck will give you several signs. You should consider replacing your plugs if you notice any of the following:
- Rough Idle: The engine may shake or sputter when you're stopped.
- Hesitation: When you press the gas pedal, the truck may hesitate or stumble before accelerating.
- Poor Fuel Economy: You'll find yourself filling up the gas tank more often than usual.
- Difficulty Starting: The engine cranks but takes a long time to start, or fails to start at all.
- Engine Misfires: You may feel a jerking or surging from the engine while driving.
- Check Engine Light: While less common on OBD-I vehicles, a persistent misfire can sometimes trigger a light.
Choosing the Right Aftermarket Spark Plug
For the 1987 V10, especially those with the common 5.7L TBI engine, choosing the right spark plug is simple: newer isn't always better. These engines were designed around basic, reliable technology. Many owners report that expensive, modern plugs can actually cause performance problems.
Tier 1: Recommended for Stock Engines (Conventional Copper)
This is the best choice for a stock or lightly modified 1987 V10. Forum and mechanic consensus is strong: these engines run best on the type of plugs they were designed for. They are inexpensive and reliable.
- ACDelco: As the original equipment manufacturer, their conventional copper plugs (like the R45TS) are the factory-correct choice. You cannot go wrong with these for stock performance.
- NGK: A highly respected brand that offers excellent V-Power copper plugs. Many owners consider them equal to or even better than OEM for reliability and smooth operation.
Tier 2: Standard Aftermarket Options
These brands offer reliable, budget-friendly copper plugs that will perform well in your V10.
- Autolite: A long-standing brand offering standard copper plugs that are a perfectly acceptable alternative to ACDelco or NGK.
- Champion: Another classic brand that produces dependable copper spark plugs suitable for these engines.
Tier 3: Premium & Performance Plugs (Use with Caution)
This category includes plugs made with precious metals like platinum and iridium, as well as those marketed for high-performance.
- Bosch, Denso, NGK (Iridium/Platinum): While these are top-tier brands, their precious metal plugs are generally not recommended for a stock 1987 V10.
- Accel, MSD: These brands specialize in performance ignition components. Their spark plugs are intended for engines with significant modifications, not for a daily driver with a stock setup.
Pro Tip: Check the Gap!
The standard spark plug gap for most 1987 Chevy V8 engines is 0.035 inches. However, always check the emissions sticker under your truck's hood for the exact specification. Never assume a new spark plug is gapped correctly out of the box. Use a gap tool to check and adjust each plug before installation.
Estimated Costs for Spark Plugs
| Part Type | Estimated Price Range (Set of 8) |
|---|---|
| New OEM (ACDelco Copper) | $20 - $40 |
| New Aftermarket (Copper) | $20 - $45 |
| New Aftermarket (Iridium/Platinum) | $50 - $100+ |
| Shop Labor | $100 - $200 |
Frequently Asked Questions
How often should I replace the spark plugs on my 1987 V10?
For standard copper plugs, which are recommended, a replacement interval of every 25,000 to 30,000 miles is a good practice to maintain peak performance.
Should I use anti-seize on the new spark plugs?
Yes, it's a good idea to apply a small amount of anti-seize compound to the threads of the new plugs. This prevents them from getting stuck (galling) in the cast iron cylinder heads, making future removal much easier. Also, use a dab of dielectric grease inside the spark plug wire boot to protect against moisture and ensure a good connection.
Is it hard to change the spark plugs myself?
No, this is a great DIY job for beginners. The engine bay of the 1987 V10 offers plenty of room to work, unlike modern trucks. You'll need basic tools like a ratchet, an extension, and a spark plug socket.
Should I replace my spark plug wires at the same time?
Yes, it is highly recommended. Spark plug wires degrade over time and can cause the same symptoms as bad plugs. Replacing the plugs and wires together ensures your ignition system is fully refreshed for reliable performance.
Technical Specifications
OEM Part Numbers: R45TS
Recommended Spark Plug Type: Conventional Copper Recommended Spark Plug Gap: 0.035 inches (Verify on vehicle's emissions label) Socket Size: 5/8" or 13/16" (varies by plug brand)
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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.
- Chevrolet V10:
- 🛍️ Shop This Part
- Symptoms of Failing Spark Plugs
- Choosing the Right Aftermarket Spark Plug
- Tier 1: Recommended for Stock Engines (Conventional Copper)
- Tier 2: Standard Aftermarket Options
- Tier 3: Premium & Performance Plugs (Use with Caution)
- Pro Tip: Check the Gap!
- Estimated Costs for Spark Plugs
- Frequently Asked Questions
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