Key Features
Ultra-Low Resistance Design
The standout feature of the Ultra-Spark 50 series is its extremely low conductor resistance.
Edelbrock rates these wires at approximately 50 ohms per foot (with some product specifications listing approximately 40 ohms per foot, depending on application and production documentation).
Benefits include:
- Maximum spark energy
- Improved combustion efficiency
- Better throttle response
- Reliable high-RPM ignition
- Reduced voltage loss
Low-resistance ignition wires are especially beneficial on engines equipped with aftermarket ignition systems.
Kevlar® Spiral-Wound Core
At the center of every wire is a Kevlar® reinforced spiral-wound conductor.
Advantages include:
- Exceptional tensile strength
- Consistent conductivity
- Long service life
- Excellent vibration resistance
Kevlar reinforcement helps maintain ignition performance even under demanding racing conditions.
Heavy-Duty 8.5mm Silicone Jacket
The Ultra-Spark 50 uses premium 8.5mm silicone insulation to protect the conductor from harsh engine environments.
Benefits include:
- High heat resistance
- Oil resistance
- Moisture protection
- Chemical resistance
- Improved electrical insulation
The heavy-duty jacket helps reduce voltage leakage while extending service life.
Metal Heat Sleeves
Unlike many standard ignition wire sets, the Edelbrock 22716 includes integrated metal heat sleeves.
Benefits include:
- Additional protection from header heat
- Increased wire longevity
- Reduced risk of heat damage
- Improved durability for performance applications
Heat protection is especially valuable on LS engines equipped with aftermarket long-tube headers.
Outstanding EMI/RFI Suppression
Despite its extremely low resistance, the Ultra-Spark 50 is engineered to provide excellent suppression of:
- Electromagnetic interference (EMI)
- Radio frequency interference (RFI)
This helps protect:
- Engine management systems
- Electronic fuel injection
- Sensors
- Vehicle electronics
Maintaining clean ignition signals is critical on modern LS-powered vehicles.
Ultra-Spark 50 vs Ultra-Spark 500
Edelbrock offers two primary ignition wire series:
Ultra-Spark 500
Ideal for:
- Stock replacement
- Daily drivers
- Mild performance builds
- Budget-conscious maintenance
Ultra-Spark 50
Designed for:
- Performance engines
- Camshaft upgrades
- Supercharged applications
- Turbocharged builds
- Nitrous engines
- High-compression combinations
If your engine demands maximum ignition energy, the Ultra-Spark 50 is the premium choice.
Why Upgrade Spark Plug Wires?
Performance ignition wires can help restore or improve:
- Engine response
- Combustion efficiency
- Ignition reliability
- High-RPM performance
- Cold starting
- Overall drivability
As horsepower increases, ignition wire quality becomes increasingly important.
Installation Tips
For best results:
- Replace one wire at a time.
- Route wires away from headers whenever possible.
- Utilize the included heat sleeves properly.
- Fully seat every ignition boot.
- Inspect spark plugs during installation.
Proper routing and heat protection maximize ignition performance and wire life.
Final Verdict
The Edelbrock 22716 Ultra-Spark 50 Plug Wire Set is one of the best premium ignition upgrades available for GM LS truck engines. Featuring ultra-low resistance, Kevlar® spiral-wound conductors, durable 8.5mm silicone insulation, outstanding EMI/RFI suppression, and integrated metal heat sleeves, it delivers the spark energy needed by today’s high-performance LS combinations.
Whether you’re building a street truck, drag truck, or high-powered LS swap, the Ultra-Spark 50 provides race-quality ignition performance backed by Edelbrock’s long-standing reputation in the performance aftermarket.
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