Key Features

Legendary MSD Super Conductor Technology

MSD’s Super Conductor wire design is known for delivering exceptional ignition performance.

Benefits include:

• Extremely low electrical resistance
• Strong spark delivery
• Reliable combustion
• Consistent ignition timing

Lower resistance allows more ignition energy to reach each spark plug, particularly important on performance engines.

Heavy-Duty 8.5mm Ignition Wires

The 31329 features 8.5mm silicone-insulated ignition wires designed to withstand demanding engine bay conditions.

Advantages include:

• Superior electrical insulation
• High heat resistance
• Oil resistance
• Moisture protection
• Long service life

The thicker insulation helps reduce voltage leakage while improving durability.

Pre-Cut Wire Lengths

The MSD 31329 includes wires cut to application-specific lengths:

• 1 × 23″
• 2 × 25″
• 1 × 28″
• 1 × 31″
• 1 × 34″
• 2 × 37″
• 2 × 26″ coil wires

Pre-cut wires simplify installation and provide cleaner engine bay routing compared to universal wire kits.

Bolt-On Installation

The wire set is designed as a direct replacement with no custom cutting required.

Benefits include:

• Faster installation
• OEM-style routing
• Professional appearance
• Reduced installation errors

This makes the MSD 31329 suitable for both experienced enthusiasts and first-time installers.

Excellent EMI/RFI Suppression

MSD Super Conductor wires are engineered to minimize:

• Electromagnetic interference (EMI)
• Radio frequency interference (RFI)

Benefits include:

• Stable ignition signals
• Cleaner ECU communication
• Reduced electrical noise
• Improved ignition reliability

This is particularly valuable on vehicles using electronic ignition systems.

Why Upgrade Spark Plug Wires?

Over time, factory ignition wires can deteriorate due to:

• Heat cycling
• Oil exposure
• Vibration
• Moisture
• Electrical stress

Replacing aging wires may help eliminate:

• Rough idle
• Engine hesitation
• Random misfires
• Hard starting
• Reduced fuel economy
• Check Engine Light caused by ignition faults

Ideal Applications

The MSD 31329 is an excellent choice for:

• Classic muscle cars
• Street rods
• Hot rods
• Carbureted V8 engines
• HEI distributor conversions
• Weekend cruisers
• Mild performance builds
• Naturally aspirated engines

It provides race-proven ignition performance while maintaining excellent street reliability.

Installation Tips

For the best results:

1. Replace one wire at a time.
2. Match each wire to the factory firing order.
3. Route wires away from exhaust headers.
4. Fully seat every distributor and spark plug boot.
5. Use quality wire separators to prevent crossfire.

Proper routing helps maximize ignition performance and wire longevity.

Final Verdict

The MSD 31329 Super Conductor Spark Plug Wire Set is an outstanding ignition upgrade for HEI-equipped performance engines. Featuring 8.5mm Super Conductor technology, application-specific pre-cut wire lengths, bolt-on installation, and excellent EMI suppression, it provides dependable spark delivery for both street and racing applications.

If you’re looking for premium ignition performance without the hassle of building a custom wire set, the MSD 31329 delivers the quality and reliability enthusiasts have trusted for decades.

Frequently Asked Questions

Does the MSD 31329 require cutting or crimping?

No. The wires are pre-cut to application-specific lengths and designed for bolt-on installation.

What is Super Conductor technology?

MSD Super Conductor wires use an extremely low-resistance conductor that maximizes spark energy while maintaining excellent EMI suppression.

Is this wire set compatible with HEI distributors?

Yes. The MSD 31329 is specifically designed for HEI ignition applications.

Can these wires improve engine performance?

Replacing worn ignition wires helps restore reliable spark delivery, improving throttle response, idle quality, and overall ignition efficiency.