MSD 31779 Super Conductor Spark Plug Wire Set Big Block Chevy HEI - 8.5mm 454 Red

The MSD 31779 Super Conductor Spark Plug Wire Set is a vehicle-specific, pre-cut 8-wire set engineered for Big Block Chevy 454 engines with HEI distributors from 1975 and up. Featuring MSD's acclaimed 8.5mm Super Conductor construction, these wires deliver maximum spark energy to the plugs with virtually no signal loss or electronic interference.

Ultra-Low Resistance Design:

At only 40–50 ohms of resistance per foot, the Super Conductor series offers the lowest resistance of any helically wound spark plug wire. Each foot of finished wire contains over 40 feet of tightly wound copper alloy conductor wrapped around a ferro-magnetic impregnated center core, delivering both superior conductivity and outstanding EMI/RFI suppression — equivalent to a 1,500 ohm wire — keeping interference inside the wire and away from sensitive onboard electronics.

Key Features:

• 8.5mm diameter spiral-core wire construction
• 40–50 ohms/ft resistance — lowest of any helically wound wire
• Red wire with gray silicone multi-angle spark plug boots
• Male/HEI distributor terminal ends for direct HEI distributor fitment
• Dual Crimp stainless steel terminals — one crimp for the sleeve, one for the conductor, for a secure, low-resistance connection
• Outer sleeve made from a proprietary silicone/synthetic blend — highly resistant to high heat, abrasion, and tears
• RFI suppression prevents interference with ECUs, radios, and other electronics
• Wires are pre-cut to exact specifications for a bolt-on installation
• Sold as a complete 8-wire set

The MSD 31779 Super Conductor wire set is a direct bolt-on upgrade that maximizes ignition performance on Big Block Chevy 454 applications running an HEI distributor.