Spark plugs are the ignition system in an internal combustion engine. They are used to start the engine by generating enough heat in the cylinder to ignite the fuel mixture.
The best spark plugs for Hei distributor are those that have the best electrical performance in the engine.
Spark plugs should generate enough heat to ignite the fuel mixture in the engine’s cylinders and increase the engine’s efficiency. In addition, they should work well with the engine and its components.
Best Product:
| Brand Name | Product Name | Buy Best Now |
| JDMSPEED | JDMSPEED New 10.5mm Spark Plug | BUY NOW |
| Universal | Universal Spark Plug Wire Set | BUY NOW |
| Anxingo | 10.5 MM High Performance Spark Plug | BUY NOW |
| Royal Auto Part | 8.5MM High Performance Spark Plug | BUY NOW |
| Chevy | Big Block FIT Chevy 454 Spark Plug | BUY NOW |
| Royal Auto Part | MAS High Performance Spark Plug Wire | BUY NOW |
1. JDMSPEED New 10.5mm Spark Plug
These are the plugs for you when you’re looking for something that is high quality but a little more affordable.
You get two sets of 10.5mm plug wires, which are universal for SBC and BBC engines. So if you have one of those, you can use these.
The plug wires are sold individually, but you get enough to last for years. They’re packaged in small plastic containers, making them easy to carry around.
They come straight out of the box and are ready for use. You have to open them up and make sure they fit the correct size of plug.
You can’t go wrong with these spark plug wires; they’re made from high-quality material and designed to last for a long time.
Pros
- It is the best spark plug wires you can get
- It is the most popular spark plug wires on Amazon
- Universal set for SBC and BBC
- It is high-quality and affordable
- Easy to install
- It is easy to remove
Cons
- It does not fit engines that have coils.
2. Universal Spark Plug Wire Set
If you’re looking for a premium spark plug wire set that will provide you with a higher voltage spark and a more powerful ignition, then the AA Ignition 10.5mm high-performance kit is the best choice.
While the wires themselves are made from high-quality materials, they’re not as thick as the original spark plug wires, so they won’t cause overheating.
This is excellent news for people who already have their engines installed and want to keep their stock, or if you’re building a new engine and want to run these wires.
AA Ignition backs this up with a lifetime warranty and says that their spark plug wires will deliver consistent performance.
You can’t go wrong with this high-performance spark plug wire set from AA Ignition, and it’s perfect for Chevy, GM SBC, BBC, Small Block 307, 327, 350, Big Block Engines 496, 502, 427, 454, and more with HEI Distributor.
Pros
- This is a premium quality product.
- It comes with a lifetime warranty.
- Compatible with all Chevy/GM SBC/BBC engines.
Cons
- The wires are too thick and it takes too much time to fit them in the engine.
- It is a little bit expensive.
3. 10.5 MM High Performance Spark Plug
A set of spark plugs for a classic muscle car like the Camaro or Firebird can get expensive.
But here, we’re proud to offer these 10.5 mm high-performance racing spark plug wires that are guaranteed to work.
They come with 90-degree HEI-style distributor boots, perfect for the Camaro and Firebird engines. You can even use them on other cars, but these wires will work best with these two.
These spark plugs are made of 100% pure silicone, so they won’t crack or break down. They’re also designed for high temperatures and perform well under all conditions.
You can even use these wires for the new electronic ignition systems in the Camaro and Firebird. These wires will work with the standard and the latest electronic ignition systems, so you can keep your classic muscle car running for many years.
Pros
- It has a high-performance spark plug
- Has a high quality spark plug boot
- It has a lifetime warranty
- It is a universal set for SBC and BBC engines
- Made from high-quality silicone
- Easy to install
Cons
- It is a little heavy
- It is not suitable for diesel engines
4. 8.5MM High Performance Spark Plug
This is an excellent set of spark plug wires, and it’s suitable for both SBC and BBC engines.
It features high-quality silicone insulation, which prevents them from burning up and ensures they won’t lose their performance. They’re also made with high-quality copper wires and stainless steel boots.
The company claims that these wires are engineered to deliver the best performance. They also claim that they’re built to last for years and perform better than wires advertised to last for only six months.
The company backs up these claims by providing a 1-year warranty and a lifetime warranty for replacement parts. If any of the wires break, you can send them back and get a replacement.
You can use this spark plug wire set with all SBC and BBC engines, and they’ll perform well for years.
Pros
- It is a universal set for SBC and BBC engines
- It is made from high-quality material
- Easy to install
- Simple to use
Cons
- It is too long
- It is not user friendly.
5. Big Block FIT Chevy 454 Spark Plug
This is a replacement plug wire for the Big Block Chevy engine. It is designed to fit the Big Block Chevy 454, 454E, and 454EFI engines with the HEI Strut Over Valve Cover.
The wiring harness has been reshaped to allow a more compact connection to the ignition coil.
The wires are made from high-quality copper alloy, which makes them highly durable. The wires have rubber insulation for added protection against external forces.
The wires are available in various lengths and diameters. Installation instructions are included.
Pros
- It is made from high quality material that is durable.
- Easy to use and is simple to clean.
- It is compact and lightweight.
- It has a good design.
Cons
- It is not waterproof.
6. MAS High Performance Spark Plug Wire
Mas is one of the top manufacturers of automotive spark plug wires, and this set of eight high-performance wires is great for use with modern engines.
They’re made from premium-grade stainless steel, which makes them ideal for daily use in the engine compartment, but they’re also strong enough to handle extreme temperatures. In addition, they come with a lifetime guarantee, so you know you can count on them for many years to come.
This set of eight high-performance spark plug wires is designed for modern engines, so they’re suitable for gas and diesel vehicles.
It features stainless steel, which makes them ideal for daily use in the engine compartment, but they’re also strong enough to handle extreme temperatures.
It also comes with a lifetime guarantee, so you know you can count on it for many years.
Pros
- They can be used with the stock ignition system.
- They can also be used with other ignition systems.
- Easy to install.
- Lightweight and easy to handle.
- Made of high-quality material.
Cons
- They can break easily.
- Not suitable for long-term use.
7. Moroso 9877M Mag-Tune Spark Plug
We love Moroso’s Mag-Tune ignition wires because of their excellent performance and cost-effectiveness.
These are the best ignition wires for big block engines, and they’re made to withstand the rigors of racing and street driving.
With the right combination of spark plug boots and spark plug wires, these are a significant upgrade to your stock wires and plugs.
They’re perfect for those who want to take their engine to the next level and keep their wallet in their pocket.
Moroso’s Mag-Tune wires have a 30-day money-back guarantee, and if you have any questions about them, they’re always happy to help.
They also have a lifetime warranty on the ignition wires, which is a rarity amongst other ignition wire manufacturers.
Pros
- It is easy to install the wires.
- The wires will not cut into the rubber boot.
- Do not require a special installation tool.
- The wires are easy to replace if damaged.
- Wires are long lasting and durable
Cons
- The wires do not hold up under extreme heat.
8. Сompatible with Set Red Spark Plug
If you’re looking for a set of spark plug wires for your big block Chevy, then you’ll need the Big Block Ultra 40 for Chevy BBC 454 502 HEI.
The wires are made of high-grade stainless steel, resistant to corrosion, and they come with 90° boots that fit snugly on your spark plugs.
This means that your spark plugs won’t get lost when you remove them, and you’ll be able to find them easily again.
The boot is made of soft rubber, which is flexible enough to allow your spark plugs to move freely but sturdy enough to protect them from damage.
We’ve had these wires for years, and they still look brand new, so we know they’ll last longer.
Get these if you want the highest-quality spark plug wires for your big block Chevy.
Pros
- It is made from high-quality materials
- It has a sleek design
- Easy to install
- It is lightweight
- Easy to assemble
Cons
- The instructions are difficult to understand
- The tool is not very easy to handle
9. Moroso 9775M Mag-Tune Spark Plug
In automotive parts, few things are more important than your spark plugs.
Moroso makes a great set of spark plugs that is available in a variety of different configurations. We’ve reviewed these multiple times and found them to be high quality and reliable.
The 9775M Mag-Tune Spark Plug Wires Chevy Big Block Over Valve Cover HEI 180 Deg BBC is one of these spark plugs. It’s a direct fit replacement for your OEM spark plug wires and is made to handle significant power outputs.
We found that these spark plugs performed incredibly well, and they never let us down. These plugs have a lifetime warranty and are designed to withstand temperatures up to 700°C, so you know they’ll last.
With these spark plugs, you’ll get the maximum performance out of your engine and help prevent carbon build-up and maintain engine longevity.
Pros
- They provide maximum power output.
- They’re made from high-quality materials.
- Provide excellent engine longevity.
- Easy to install.
Cons
- The tips may fall off easily.
- Can be hard to find.
Buying Guideline For Spark Plugs For Hei Distributor
The best way to buy spark plugs for a hei distributor is to buy a set of plugs that fit the distributor and have the same thread size.
Center Electrodes
Center electrode spark plugs are made to provide a spark at the center of the plug.
They are usually designed for engines with a single spark plug per cylinder.
These plugs are generally more expensive than ground electrode plugs, as they are more complex to manufacture.
Ground Electrodes
Ground electrode spark plugs are made to provide the spark for all four cylinders. They are usually designed for engines with four spark plugs per cylinder.
These plugs are generally less expensive than center electrodes, as they are simpler to manufacture.
For instance, the ground electrode is usually just a metal cylinder, and the center electrode is usually a ceramic cylinder. There are many different types of ground electrode spark plugs.
Spark Plug Length
The length of the spark plug is measured from the top of the threading on the end of the cylinder to the spark plug’s tip.
The manufacturer sets, most of the time, the length of the spark plug.
However, it is necessary to consider that the longer the plug is, the more likely it is to burn out.
Spark Plug Threading
The threads on the spark plug are the holes in the cylinder head that accept the spark plug.
The threads are measured from the top of the threading on the end of the cylinder to the tip of the spark plug.
Most manufacturers use standard threading, and the standard threading is 12mm.
The threading is used to help hold the plug in place and protect the threads from the engine’s heat.
Spark Plug Installation
Spark plugs can be difficult to install, especially if you are installing the spark plug for the first time. Spark plugs are often referred to as a “blind” installation.
You will have to rely on the manufacturer’s instructions for proper installation.
The most common method for installing a spark plug is by using a spark plug torque wrench. This tool is used to tighten the spark plug to the proper torque.
Frequently Asked Questions
Q1. Which plugs for an hei distributor?
A standard 120-volt AC outlet.
Q2. Hei Spark Plugs??
Hei plugs are a type of spark plug that was designed in China. They are not as common as other types of spark plugs, but they are still used in a number of vehicles.
Q3. Greater spark plug gap with HEI distributor?
The spark plug gap must be set at 0.025 inches with a HEI distributor.
Q4. HEI distributor upgrade & spark plugs
If your car has an HEI distributor, you may want to upgrade the spark plugs. HEI distributors use a different spark plug design than standard distributors. Some HEI distributors also require other spark plugs.
Q5. Gain extra benefits by becoming a Supporting Member
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Q6. What should the spark plug gap be for a HEI distributor?
The spark plug gap should be set at .030 inch for a HEI distributor.
Q7. What is the most high quality spark plugs?
As it largely depends on personal preference. Some of the most high quality spark plugs available include the Denso Iridium, NGK Iridium, and Bosch Platinum plugs.
Q8. What spark plugs does a 350 Chevy take?
Most 350 Chevy engines use the same spark plugs as a 350 Chevy truck.
Q9. Do better spark plugs give more horsepower?
It depends on the make and model of the engine and the spark plugs that are being used. Some spark plugs may provide more power while others may not have any effect on engine performance.
Q10. What is the spark plug gap for a 383 stroker?
The spark plug gap for a 383 stroker will vary depending on the engine and compression ratio. Generally speaking, the spark plug gap for a 383 stroker should be set somewhere between 0.060 and 0.080 inches.
Q11. What does Acdelco r45ts fit?
This product is not a part of the Acdelco r45ts.
Q12. Is iridium or platinum better?
iridium is better because it is more corrosion-resistant than platinum.
Q13. Why are NGK spark plugs better?
NGK spark plugs are better because they have a higher voltage and a longer life.
Q14. What spark plugs are better NGK or Bosch?
It depends on several factors, including engine type and driving style. Some people prefer NGK spark plugs because they are generally more reliable than Bosch plugs, while others may choose Bosch plugs because they give off a warmer spark.
Q15. Are NGK spark plugs good for Chevy?
The NGK spark plugs are generally a good choice for use in a Chevrolet vehicle.
Q16. What is the spark plug gap for a 5.7 Chevy?
The spark plug gap for a 5.7 Chevy is 1.5 inches.
Q17. How can you tell when a spark plug is bad?
When a spark plug is bad, it will not produce a spark when it is inserted into the engine.
Q18. Should I run a colder or hotter spark plug?
Generally speaking, it is best to run your spark plugs at the same temperature as the engine oil.
Q19. Do high end spark plugs make a difference?
There is no scientific evidence to suggest that high end spark plugs significantly affect a vehicle’s performance. Some enthusiasts may believe that higher-quality spark plugs will result in a smoother, more consistent firing sequence, which could theoretically improve engine performance.
Q20. Should I use OEM spark plugs?
It is typically recommended that replacement spark plugs be used with OEM parts.
Q21. What is the firing order on a small block Chevy?
The firing order on a small block Chevy is: 1. ignition coils 2. spark plugs 3. fuel injectors 4. air cleaner 5. carburetor 6. exhaust manifolds 7. catalytic converter 8. engine block 9. crankshaft 10. pistons
Conclusion
Regarding your car’s engine, it’s essential to know what spark plugs to use. While some are designed to work with specific engines, others are generally used for all engines.
Spark plugs are a common issue for people who run engines on their vehicles. Drivers often overlook them because they don’t seem like they need regular maintenance, but in reality, they can cost thousands of dollars if they fail.
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