10 Best Spark Plug For Chevy 350 With Headers (2024 Update)

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If you’re looking for the best spark plug for your Chevy 350 with headers, it can be daunting to sift through the various options on the market. However, there are factors you should consider before making a purchase to ensure maximum performance and longevity of your engine.

Firstly, check your engine manual or consult with a trusted mechanic to determine the correct size and heat range for your spark plugs. Additionally, consider the type of driving you do and your vehicle’s modifications, such as headers, to determine if you need a specialized spark plug.

Furthermore, look for spark plugs with durable materials, such as iridium or platinum, which can improve longevity and performance. Also, consider the design, such as a tapered cut ground electrode, which can provide better airflow and combustion.

Are you tired of constantly replacing your spark plugs and looking for a solution that improves your engine’s performance? Are you wondering how headers affect your spark plugs and which brand can handle the high temperatures? Keep reading to discover the best spark plug options for your Chevy 350 with headers and take your engine to the next level.

10 Best Spark Plug For Chevy 350 With Headers

# Product Image Product Name Product Notes Check Price
1
Ideal for efficient and precise lawn mowing in residential or commercial properties with large grassy areas.
2
This product is ideal for improving the performance of Small Block Chevy, GMC, and other engines with over the valve cover wires.
3
It is ideal for use with Chevrolet SBC small block GMC engines and compatible with HEI 283-400 models.
4
This product is ideal for enhancing the performance of Chevrolet small block engines with various displacement sizes.
5
The product is ideal for improving engine performance and efficiency of machines that use spark plugs.
6
This product is ideal for improving the performance of small/big block Chevy & AMC V8 engines with HEI systems.
7
This product is ideal for small block Chevy engines using an HEI cap, delivering superior spark conductivity.
8
The product is ideal for improving the performance of small and big block Chevy engines with easy fitting options.
9
It is an ideal spark plug wire set for Chevrolet and GMC vehicles with 5.0/5.7L TBI engines manufactured from 1985-1997.
10
This product is ideal for improving spark plug performance in various types of engines.
Ideal for efficient and precise lawn mowing in residential or commercial properties with large grassy areas.
This product is ideal for improving the performance of Small Block Chevy, GMC, and other engines with over the valve cover wires.
It is ideal for use with Chevrolet SBC small block GMC engines and compatible with HEI 283-400 models.
This product is ideal for enhancing the performance of Chevrolet small block engines with various displacement sizes.
The product is ideal for improving engine performance and efficiency of machines that use spark plugs.
This product is ideal for improving the performance of small/big block Chevy & AMC V8 engines with HEI systems.
This product is ideal for small block Chevy engines using an HEI cap, delivering superior spark conductivity.
The product is ideal for improving the performance of small and big block Chevy engines with easy fitting options.
It is an ideal spark plug wire set for Chevrolet and GMC vehicles with 5.0/5.7L TBI engines manufactured from 1985-1997.
This product is ideal for improving spark plug performance in various types of engines.

1. R45ts Pkg 8

The product being reviewed is a set of spark plugs that are designed to enhance the performance of your vehicle. These spark plugs have been engineered with a number of features that set them apart from other options on the market.

One of the most notable features of these spark plugs is their black onyx coating. This coating helps to prevent corrosion and ensures that the spark plugs will last for a long time. The nickel-chrome alloy sheathing on the center electrode also works to prevent corrosion and ensure that the spark plugs continue to function properly.

In addition to their corrosion-resistant features, these spark plugs have a copper core that provides excellent heat transfer. This helps to increase the overall durability of the spark plugs and ensures that they can handle the demands of high-performance engines.

To further improve their performance, these spark plugs also feature a ribbed suppressor seal. This seal helps to extend resistance and prevent spark flash-over and misfire, which can lead to poor engine performance.

2. Red Hot Chevy Spark Plug Wires

The 8.0mm Red Silicone Spark Plug Wires with Black 90-Degree Straight Boot for HEI Distributor and Black 90-Degree Boot for Spark Plug and Coil-in-Cap HEI Design System is a reliable and durable option for Chevrolet GMC Over the Valve Cover Wires 283 305 307 327 350 400. This set comes with a one-year warranty, providing peace of mind for the user.

Designed with Over The Valve Covers and made with a low-resistance heat conductor, these wires can withstand wear and tear and last for years. The black 90-degree straight boot for HEI Distributor and black 90-degree boot for spark plug and coil-in-cap HEI design system are compatible with the HEI Distributors. However, please note that the set does not include a coil wire and is sold separately.

Whether you're a professional mechanic or a DIY enthusiast, this set of spark plug wires is easy to install and provides a reliable connection between the distributor and the spark plugs. The red silicone material ensures a strong and secure fit, while the 90-degree boots offer flexibility and adjustability for a custom fit.

3. Chevy High-Performance Spark Plug Wires.

The product being reviewed is a top-performing ignition wire set that promises quick installation and uses a spiral-wound copper conductor with extremely low resistance, coupled with high EMI suppression. The wire set is designed in black with a 90-degree boot for both the HEI distributor and spark plug, and is compatible with Coil-in-Cap HEI Design System.

One of the standout features of this wire set is its heat-resistant silicone jackets. These jackets are made of high dielectric strength insulator, braided heavy glass, heavy-duty silicone, and high-temperature black boots that resist heat and abrasion damage. This makes the wire set durable and long-lasting, ensuring that it can withstand the toughest of conditions.

The product is compatible with SBC GMC Under the Exhaust Wires HEI 283 305 307 327 350 400, and comes with a one-year warranty. This warranty provides customers with peace of mind knowing that they are making a worthwhile investment.

In addition to its impressive features, the wire set is also fast and easy to install. This is great news for people who are not particularly handy or do not have the time to spend on complicated installations.

4. Gm Small Block High Performance Spark Plug Wires.

Looking for a high-quality ignition spark plug wire that's perfect for your modified ignition distributor? Look no further than this Ignition Spark Plug Wire set, designed to work seamlessly with Chevy Chevrolet GMC SBC Small Block Under the Exhaust Wires HEI 283 305 307 327 350 400.

With a black 90 degree boot for spark plug, and black 90 degree boot for HEI distributor, this wire set is perfect for use with a coil-in-cap HEI design system. Plus, thanks to its high dielectric strength insulator, braided heavy glass, heavy-duty silicone jackets, and high temperature black boots that resist heat and abrasion damages, you can be sure that this wire set will stand up to even the toughest conditions.

One of the biggest advantages of this wire set is its high-temperature tolerance. Made of 100% pure silicone insulator for the outer layer, this wire set can withstand high temperatures without breaking down or losing its effectiveness.

And if you ever have any questions or concerns about this wire set, you can rest assured knowing that it comes with a one year limited warranty. So why wait? Upgrade your ignition system with this high-quality Ignition Spark Plug Wire set today!

5. 8199 Accel Hp Copper Spark Plug – Shorty

This pack of eight spark plugs is a must-have for those who are looking to optimize their engine's performance. With its compact design, these spark plugs are ideal for use in cramped spaces, making them a versatile choice for a variety of vehicles.

One of the standout features of these spark plugs is their ability to deliver significantly more power at high RPM. This means you'll be able to achieve greater speeds and overall performance without sacrificing fuel efficiency. Additionally, you'll enjoy instant throttle response, which ensures that your vehicle responds quickly to your input.

Thanks to their innovative design, these spark plugs also offer better fuel economy. This is due to their ability to reduce fouling, flame dissipation, and misfires, which can all contribute to decreased fuel efficiency. With these spark plugs in place, you'll be able to enjoy better gas mileage and save money at the pump.

6. Red Hot Pow'r Wires For Chevy & Amc V8s

The product being discussed is a wiring harness designed to fit small/big block Chevy 283-454 and AMC 290-401 engines with HEI ignition. This wiring harness can be routed either over the valve covers or under the headers, providing flexibility in installation. The terminal configuration of this harness includes multi-angle spark plug (straight that can be bent to 45 degree angle) and 90°HEI/90° socket distributor terminals.

This wiring harness is manufactured in the USA with high-quality components and assembly, ensuring its durability and reliability. Additionally, it comes with wire separators, numbered wire markers, and dielectric grease, making the installation process smooth and efficient.

7. Supercharged Spark Plug Wire Set For Small Block Chevy

The product being described is an exceptional spark plug wire that boasts of superior conductivity, high EMI suppression capabilities, and durability. The wire is made with a copper alloy conductor that has a resistance value of less than 50 ohms per foot, guaranteeing a superior spark. The ferro-magnetic impregnated core is an effective EMI choke, ensuring that there is minimal radio interference.

The wire is designed with forty feet of conductor being wound into a single foot of wire, which translates to high EMI suppression capabilities. The conductor core also features DuPont Kevlar material, providing increased tensile strength, making the wire more durable.

The outer sleeve of the wire is made with a proprietary compound that makes it resistant to high heat and abrasion, ensuring that the wire lasts longer and performs better. The stainless steel terminals of the wire feature dual crimp tabs that grip the wire conductor and outer jacket separately, ensuring a secure connection.

8. Ultra Pow'r Wires For Chevy Engines

The Spark Plug Wire Set is a versatile and high-quality option for small and big block Chevy applications. It is compatible with a wide range of engine types, including 283, 305, 307, 327, 350, 383 (stroker), 396, 400, 402, 427, 454, 502, and others based on the popular platform. With its universal fit, this wire set is perfect for those who own multiple Chevy models or frequently switch between different engines.

One of the key features of this spark plug wire set is its flexible design. It is designed to fit over valve covers or under headers, making it easy to install in a variety of engine configurations. The wire set attaches to the spark plugs with 90-degree boots, ensuring a secure and reliable connection.

In addition to its functionality, this spark plug wire set is also aesthetically pleasing. The black wires with black boots create a sleek and stylish look under the hood of your vehicle. This is especially great for car enthusiasts who take pride in the appearance of their engine bay.

The Spark Plug Wire Set includes 9 wires, wire markers, separators, and dielectric grease for a complete installation. This ensures that you have everything you need to properly install the wire set and achieve optimal performance.

Made in the USA with high-quality materials and assembly, this spark plug wire set is built to last. Its durability and reliability make it a popular choice among Chevy owners. Whether you're upgrading your engine or replacing worn-out wires, this spark plug wire set is a great option to consider.

9. Accel 9020c Spark Plug Wire Set – Extreme 9000 Ceramic Boot – Chevy/gmc 85-97 5.0/5.7l Tbi

Introducing the Ceramic Boots with Stainless Steel Spark Plug Terminals – the perfect addition to your vehicle's engine! These top-of-the-line boots are designed to withstand high temperatures of up to 2,000° Fahrenheit, making them a reliable choice for any engine. The 8mm double silicone construction black wire is rated at 600° F, ensuring that it can handle even the toughest conditions.

With a ferro spiral core offering the highest level of RFI/EMI suppression, you can be confident that your engine will run smoothly and efficiently. The 500 Ohms/foot rating adds further assurance that these boots are built to last. Additionally, the stainless steel spark plug terminals ensure maximum spark energy is delivered to the plugs, further enhancing your engine's performance.

These ceramic boots are not only durable but also long-lasting, making them a smart investment for any vehicle owner. They are designed to provide superior performance, ensuring that your engine runs smoothly and efficiently for years to come.

10. Ngk # 3186 G-Power Platinum Spark Plugs Tr5gp – 8 Pcsnew

The G-Power Platinum spark plug is a reliable and high-performing option for vehicles. Its design allows it to operate over a wider range of heat than other standard plugs, making it a versatile choice for various driving conditions. The G-Power Platinum also boasts resistance to carbon buildup and pre-ignition, ensuring that the engine runs smoothly and efficiently for longer periods of time.

What sets the G-Power Platinum apart is its patented triple gasket sealing process, which effectively eliminates the possibility of combustion gas leakage. This feature provides added safety and peace of mind for drivers, as well as improved performance and longevity for the spark plug itself.

In terms of specifications, the G-Power Platinum is designed with a fine platinum tip to ensure consistent spark and improved fuel efficiency. Its tapered cut ground electrode also reduces quenching for better ignitability. These features work together to provide a reliable and efficient spark plug option for drivers.

Best Spark Plug For Chevy 350 With Headers FAQs

Are there specific spark plugs that work better with headers on a Chevy 350?

Yes, there are specific spark plugs that work better with headers on a Chevy 350. Headers on a Chevy 350 improve the engine's performance by increasing the exhaust flow, which leads to improved combustion. However, this can also lead to higher temperatures in the engine bay, which can affect the performance of the spark plugs. Therefore, it is recommended to use spark plugs with a heat range that is one or two steps colder than the stock spark plugs. This will help to prevent pre-ignition and detonation, which can cause engine damage. It is also recommended to use spark plugs with a non-projected tip, as this can prevent the spark plug from protruding too far into the combustion chamber and causing interference with the piston. Some recommended spark plugs for headers on a Chevy 350 include the NGK TR55, the Bosch Platinum Plus 4, and the ACDelco Professional Iridium. It is always best to consult with a trusted mechanic or refer to the manufacturer's recommendations for the best spark plug choice for your specific engine and headers.

Can upgrading my spark plugs improve the performance of my Chevy 350 with headers?

Yes, upgrading your spark plugs can potentially improve the performance of your Chevy 350 with headers. A spark plug's primary function is to ignite the air/fuel mixture in the engine's combustion chamber. When a spark plug is upgraded, it can provide a stronger spark, which can lead to a more complete combustion process. This can result in improved engine power, better fuel efficiency, and smoother acceleration.

When upgrading your spark plugs, it's important to consider the manufacturer's recommendations and the specific needs of your engine. Different spark plugs have different heat ranges and electrode designs, which can affect performance in different ways. It's also important to ensure that the spark plugs are properly gapped and installed correctly.

In addition to upgrading your spark plugs, there are other modifications you can make to improve the performance of your Chevy 350 with headers, such as upgrading the ignition system, improving airflow, and optimizing the fuel system.

Can using the wrong spark plugs damage my Chevy 350 with headers?

Yes, using the wrong spark plugs can potentially damage your Chevy 350 engine with headers. The spark plugs are responsible for igniting the fuel-air mixture in the combustion chamber, which ultimately drives your engine's performance. If you use spark plugs that are not designed for your engine, they may not provide the correct heat range, electrode gap, or thread reach, which can lead to misfires, poor engine performance, and even engine damage.

When choosing spark plugs for your Chevy 350 with headers, it's important to consider factors such as the engine's compression ratio, fuel type, and ignition system. Always consult your vehicle's owner's manual or a trusted mechanic to ensure you are using the correct spark plugs. Using high-quality spark plugs that are specifically designed for your engine can improve performance, increase fuel efficiency, and prolong the life of your engine.

How do I choose the right spark plug for my Chevy 350 with headers?

Choosing the right spark plug for your Chevy 350 with headers is crucial for optimal engine performance. Firstly, you should consult your vehicle's manual to determine the recommended spark plug type and heat range. However, if your vehicle has different modifications, such as headers, you may need to consider a different spark plug option.

When selecting a spark plug, you should consider the heat range, electrode material, and gap size. A hotter spark plug will have a longer insulator nose to prevent fouling, while a colder spark plug will have a shorter insulator nose for better heat dissipation. As for electrode material, copper is the most affordable option, while iridium and platinum are more expensive but have a longer lifespan.

In terms of gap size, a wider gap can improve performance, but it also increases the risk of misfires. Therefore, it is important to consult your vehicle's manual or a trusted mechanic for the appropriate gap size.

Ultimately, the right spark plug for your Chevy 350 with headers will depend on your specific vehicle and modifications. It is recommended to consult with a professional to ensure you choose the best option for your engine's needs.

How often should I replace the spark plugs on my Chevy 350 with headers?

Spark plugs are an essential component of any engine, and they need to be replaced periodically to ensure optimal performance. When it comes to a Chevy 350 with headers, the frequency of spark plug replacement can vary depending on several factors. Generally, it is recommended to replace spark plugs every 30,000 to 50,000 miles or every two to three years, whichever comes first. However, if you use your Chevy 350 for high-performance driving, such as racing or towing, you may need to replace the spark plugs more frequently. Additionally, if you notice any symptoms of worn-out spark plugs, such as rough idling, misfires, or decreased fuel efficiency, you should have your spark plugs replaced immediately. Regular maintenance and inspection of your Chevy 350's spark plugs can help you avoid costly repairs down the road and ensure your vehicle runs smoothly for years to come.

Should I use iridium or platinum spark plugs for my Chevy 350 with headers?

Both iridium and platinum spark plugs are good choices for a Chevy 350 with headers. However, it ultimately depends on your specific needs and preferences.

Iridium spark plugs are known for their durability and longevity. They have a very small electrode which allows for a more efficient spark, leading to better fuel economy and improved performance. Iridium plugs are also less likely to foul, making them a good choice for high-performance engines.

On the other hand, platinum spark plugs are also durable and have a longer lifespan than traditional copper plugs. They have a larger electrode than iridium plugs, which can lead to a stronger spark and better overall performance.

Ultimately, the decision between iridium and platinum spark plugs comes down to personal preference and the specific needs of your engine. If you're looking for maximum durability and performance, iridium plugs may be the way to go. However, if you're looking for a balance of performance and longevity, platinum plugs may be a better choice.

What are the best spark plugs for a Chevy 350 with headers?

When it comes to selecting spark plugs for a Chevy 350 with headers, there are several options available in the market. However, the best spark plugs for a Chevy 350 with headers will depend on various factors, such as the type of headers, engine modifications, and driving conditions.

One of the popular choices for spark plugs for Chevy 350 with headers is the NGK Iridium IX spark plugs. These spark plugs are designed to offer high performance and enhanced durability, making them ideal for high-performance engines. Another option is the AC Delco Professional Iridium spark plugs, which are designed to deliver reliable performance and long-lasting durability.

It's important to note that selecting the right spark plugs for your Chevy 350 with headers can significantly impact your engine's performance, fuel efficiency, and overall lifespan. Therefore, it's recommended to consult with a professional mechanic or refer to the manufacturer's guidelines to ensure you choose the right spark plugs for your specific engine and driving needs.

What are the signs that it's time to replace the spark plugs on my Chevy 350 with headers?

The spark plugs in your Chevy 350 engine with headers are an essential component that ignites the air-fuel mixture in the combustion chamber, providing the power to run the engine. Over time, spark plugs can wear out or become fouled, resulting in decreased engine performance and fuel efficiency. Here are some signs that it may be time to replace the spark plugs on your Chevy 350 with headers:

1. Difficulty starting the engine: If the engine is struggling to start, it may be a sign that the spark plugs are failing to produce a strong enough spark to ignite the fuel.

2. Poor fuel economy: Worn or fouled spark plugs can cause the engine to run inefficiently, resulting in decreased fuel economy.

3. Rough idling: If the engine is idling roughly or shaking, it may be a sign that the spark plugs are not firing correctly.

4. Misfiring: A misfiring engine is a clear sign that the spark plugs are not functioning correctly and need to be replaced.

5. Engine performance issues: If you notice a decrease in engine power or acceleration, it may be due to worn or fouled spark plugs.

It is recommended to replace the spark plugs every 30,000 to 50,000 miles, but it is always best to consult your vehicle's owner's manual for specific recommendations.

What brand of spark plugs is recommended for a Chevy 350 with headers?

When it comes to selecting the right spark plugs for a Chevy 350 with headers, there are various options available in the market. However, it is essential to choose the ones that are recommended by the manufacturer to ensure optimal performance and longevity of the engine.

One of the popular brands that are recommended for Chevy 350 engines is AC Delco. The company has been manufacturing spark plugs for decades and is trusted by many automobile manufacturers. AC Delco offers a range of spark plugs that are specifically designed for high-performance engines with headers.

NGK is another brand that has gained a reputation for producing high-quality spark plugs for Chevy engines. Their spark plugs are designed to provide excellent performance, reliability, and durability. NGK offers a wide range of spark plugs that are suitable for different types of engines, including those with headers.

In conclusion, it is advisable to consult with a certified mechanic or refer to the manufacturer's recommendations before purchasing spark plugs for a Chevy 350 with headers.

What is the recommended gap for spark plugs on a Chevy 350 with headers?

The recommended gap for spark plugs on a Chevy 350 with headers can vary depending on the specific engine and the type of spark plugs being used. However, a common gap setting for a Chevy 350 with headers is around 0.035 inches. It is important to consult the manufacturer's specifications for the specific spark plugs being used, as some may require a different gap setting. It is also important to properly torque the spark plugs to ensure they are securely in place. Additionally, regular maintenance and inspection of the spark plugs can help ensure optimal engine performance and prevent potential damage. It is recommended to check and replace spark plugs as part of routine maintenance, typically every 30,000-50,000 miles or as specified by the vehicle manufacturer.

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