4 Best Spark Plug Wires For Chevy 350 With Headers & Buyers Guide (2020)

4 Best Spark Plug Wires For Chevy 350 With Headers & Buyers Guide (2020)

by Β· Automotive Expert
Published
Updated

So, back in time, when my dad had a 1974 Camaro SS with a 350 (the most stunning engine on a market, btw), I figure out, that spark plug wires are much significant thing then I thought. We had to change them every year and a half, because most of them on the aftermarket were too bad.

But now, as a 20 year expert, in this case, I can offer you some of the best-quality spark plug wires for 350 SBC engines on the market, in great memory of my father.

Why you can you trust us? Autokwix is reader-supported. I accept nothing from product manufacturers. Never. But earn small commission from Amazon

We recommended:

our pick

Taylor Cable 64628

Best choice for an OEM replacement

If you are not the type of person that like to be messed up under the hood - these Taylor Cable spark plug wires are definitely for you.

runner up

Denso 6718062

Your choice for an efficient fuel consumption

So, if you wanna buy a nice set of new spark plug wires, that can save you some money on the road, then choose Denso.

premium

MSD 35599

Superior choice for the goldie motorists

Surely, this item is a great choice for those of you, who want a directly OEM spark plug wires set and you don`t mind the money.

budget

ACDelco 9718Q

Item with a high durability level

I think you should take this set of wires if you are an off-road driver.

Some modern cars have ignition systems without a distributor, with spark plug wires connecting each coil block directly to one or more spark plug, while others have a coil structure on the plug, which completely obviates the need for wiring (but this is a completely different story).

But sure to say, that keeping up on your ignition parts like your coils, spark plug wires, cap, rotor and spark plugs is always important, but especially on the older 350. If one piece of the ignition puzzle is fizzing out or needs replacement, then the whole system suffers and you'll notice it when you're driving.

Table Of Best Spark Plug Wires For Chevy 350 With Headers

NameOur ratingoutside diameterlengthcore materialcolorpriceShops
Taylor Cable 64628
β˜…β˜…β˜…β˜…β˜…
0.31 inches11 incheshelically spiral-wound reinforced with kevlarblue$$
Denso 6718062
β˜…β˜…β˜…β˜…β˜…
0.31 inches8 icnhescarbon impregnated fiberglass reinforced with kevlarblack$$
MSD 35599
β˜…β˜…β˜…β˜…β˜…
0.31 inches12 icnhesferro-magnetic impregnatedred$$$
ACDelco 9718Q
β˜…β˜…β˜…β˜…β˜…
0.27 inches40.3 inchesfiberglass reinforced latex graphiteblack$

swipe left to see more

How we decided

box-icon
8
models considered
clock-icon
59
hours spend
interview-icon
12
experts interviewed

Best Spark Plug Wires For Chevy 350 With Headers

Our rating:
β˜…β˜…β˜…β˜…β˜…5.0
User rating:
0.0(0 review)
Thanks for review!You already voted!

Taylor's 8mm High-Energy Series is a high temperature and oil resistant spark plug wire set, available with two popular conductors: resistor and wire.

These wires are a direct performance replacement. That means that they're a direct substitute for the stock wires, but they're higher performance than the stock wires are. Even if you weren't looking for a high-performance upgrade, these are still a nice stock replacement. You won't be messing anything up by adding a higher output wire to your system.

This blue 8mm spark plug wires set increases torque and horsepower and provide maximum voltage. They have oil-resistant insulation with RFI (radio frequency interference) suppression, silicone boots and double spring locks.

Key features:

  • silicone boot
  • RFI suppression
  • spiral core

Product score:

  • performance(9/10)
  • quality (8/10)
  • price (8/10)

TOTAL SCORE: 8.3

Pros
  • durable
  • OEM replacement
  • boots are pre-installed
Cons
  • none

Our rating:
β˜…β˜…β˜…β˜…β˜…4.0

If you trust wires that are more like original, then spark plug wires from Denso are the ideal choice. They have identical original headers designed for Β«clickingΒ» in place for easy installation and reliable fastening.

As Danso says, thanks to the patented process, the terminals on these wires provide an extremely strong connection, so that the cable and the lid do not separate during removal and installation. And it`s true. I`ve done replacing these wires so many times, that I can confirm this.

This set has an exact length, so they are ready for installation from the box.

They are capable of withstanding temperatures from -40 Β°C to 200 Β°C and have undergone all tests including electrical properties, shrinkage, chemical resistance and accelerated lifetime tests. That makes them the best for gas mileage.

Key features:

  • silicone insulation
  • fiberglass braid
  • kevlar core

Product score:

  • performance(8/10)
  • quality (8/10)
  • price (8/10)

TOTAL SCORE: 8

Pros
  • superior dielectric and thermal qualities
  • factory-original fit
  • chemical and oil resistance
Cons
  • durability

Our rating:
β˜…β˜…β˜…β˜…β˜…5.0

This model is the most popular on MSD product line, and a bunch of reviews are confirming this.

MSD Super Conductor spark plug wires set, equipped with a clamping cap; single clamping strap for the conductor; large clamping paws, that capture the shell; 8.5 mm sheathing, which protects against heavy heating during rupture resistance; heavy fiberglass, dielectric insulator; a dielectric insulator; a ferromagnetic core impregnated and a spirally-wrapped conductor made of copper alloy.

These wires are separated by double clamps, one for the sleeve of the wire and the other for the grip of the conductor.

Due to the individual squeezing, the conductor does not need to bend 180 degrees. This separate clamp provides a more reliable fitting, thereby reducing the probability of a break-in mass on the cylinder block or exhaust manifold.

Key features:

  • copper alloy conductor
  • durable outer sleeve
  • kevlar core

Product score:

  • performance(8/10)
  • quality (8/10)
  • price (8/10)

TOTAL SCORE: 8

Pros
  • smoother idle curve
  • perfect fitment
  • clamping cap
Cons
  • none

Our rating:
β˜…β˜…β˜…β˜…β˜…4.0

If you are looking for a spark plug wires to service your 350 engine, then check this ACDelco set.

It is a professional set that is made of high-strength glass fiber and high-temperature silicone insulators.

This is a professional set of wires. Engineers designed their length, diameter and conductor to provide maximum performance and protection against breakage.

The shape and materials of the headers distributor cover ensure correct planting, installation, and watertight sealing, and the design of the terminal improves the retention of the spark plug and facilitates installation with excellent corrosion resistance.

The insulator uses high-quality dielectric materials. Finally, the coil catch helps prevent abrasion and breakage of the wire.

Key features:

  • engineered for electromagnetic interference and radio frequency
  • excellent corrosion resistance
  • noise suppression

Product score:

  • performance(8/10)
  • quality (8/10)
  • price (7/10)

TOTAL SCORE: 7.6

Pros
  • proper fit
  • good durability
  • high-quality dielectric materials
Cons
  • some of the wires in the set could be not the same length

Best Spark Plug Wires For Chevy 350 With Headers Buying Guide

What are the signs of spark plug wires failure?

The faults are an electrical failure and current leakage. The electrical circuit breaks at the point where the metal contact of the wire is connected to the conductive housing and other components of the ignition system, for example:

  • release of the wire
  • bad connection with the output of the relevant components of the ignition system
  • oxidation or breakage of the core

In the areas where the connection is broken, there will be a spark and heat, which further aggravates the situation and may lead to the burning of metal contacts or core components.

Current leakage occurs through contaminated wires, spark plugs distributor cover, ignition coil, and when insulation and caps are damaged, so their dielectric properties deteriorate during use.

Wire resistance can be measured with a digital multimeter. The values vary but should not exceed 50 Ohms. If one of the wires showed a resistance value much less than the others, then it is faulty.

At low temperatures, high-voltage wires become rigid, and their insulation is more likely to be damaged. Besides, due to the constant vibration that accompanies the engine operation, the joints are loose, which may lead to a deterioration of the contact, for example in the distributor cover. The high temperature affects the spark plugs the most, because they are close to the heated parts of the engine. They often fail when removed.

If you're looking for new spark plug wires, it's a really good idea to replace the cap and rotor while you're at it since that isn't expensive to do. You're also gonna wanna check out your coil, too. Do you have some troubles with your car currently? It's a good idea to just replace all of these things in one shot. If your 350 old components aren't working that well, you're gonna notice a big difference in how the car runs.

It is often possible to determine the failure by testing the insulation when the engine is operating by ear (clicks are audible) or visually. If you open the engine compartment at night, the current leak will be visible by the spark. In the dark, there is sometimes a luminosity (glow) around the ignition system devices due to the humidity and ionization of the air, for example before a thunderstorm, or high current leakage.

Good contact in the headers prevents the loss of impulse energy transmitted to the spark plug wires. It is therefore advisable to check periodically whether the headers are well inserted into the sockets of the relevant ignition system components. To prevent damage to the wire, it is recommended to remove it from the cap rather than pulling it for insulation.

Conclusion

It is worth mentioning, that spark plug wires do not fail suddenly. So it is necessary to take as a rule - from time to time pay attention to them in order to not end up with a failed engine on the highway or in a clean field away from the mechanic's garage.

Resources:

  1. High tension leads - wikipedia
  2. Spark Plug - wikipedia
  3. How often should i replace my spark plugs - ngksparkplugs