MSD Super Conductor Wires solve EFI problems. While that may seem like a bold statement, it is based on our combined decades of EFI experience. No, they don't correct fuel delivery issues or correct ignition timing issues or many of the plethora of other issues that can prevent successful EFI. But the bottom line is that if radio frequency interference (RFI) is affecting the signals coming from or back to the ECU or (even worse) the ECU's operation itself, you can forget about all those other problems until you fix that. Spark plug wires are the number one source of RFI problems in EFI installations, and many who suffer from spark plug wire-related RFI have no idea that is the case.

MSD Super Conductor spark plug wires are designed to keep spark energy inside the spark plug wire rather than releasing it as electronic interference inside the engine compartment. Combined with wise spark plug wire routing and maintenance, the installation of a set of MSD Super Conductor wires can truly be a game changer, not just correcting big problems but also "mysteriously" solving those little issues that you've not been able to overcome, like that idle that seems a little off or the throttle position that wants to drift a bit when you're not on the throttle.

This MSD Super Conductor spark plug wire set fits the broad category of Chevy, GMC vehicles built from 1963 to 2000 with the Big Block V8 engine. A more precise fitment list for MSD Super Conductor Wire Set # 31489 is shown below. If your vehicle is not in that list, contact us so that we can help confirm fitment.

What's the big deal about MSD Super Conductor wires

There's no magic here--just rock-solid design and engineering. These MSD Super Conductor wires are 8.5mm outer diameter, which is much larger than factory wires that usually run 6-7mm. The primary difference in thickness is that of the insulation--an often-overlooked measurement of spark plug wire capability. The thicker insulation keeps spark energy inside the wire. Modern CD (capacitive discharge) ignitions and high-power igntion coils can actually blow pinholes right through the insulation on thinner wires--especially as they age. The heavier, high-quality insulation on the 8.5mm Super Conductor wire dramatically limits that possibility.

Deeper into the wire we find the conductor. MSD Super Conductor wires use a copper conductor, but it's not just a straight run of copper from one end to the other. The conductor is wound around a ferro-magnetic impregnated core of Dupont Kevlar. Sure, Kevlar adds physical strength to the wire. But this core is what prevents the spark plug wire from becoming an antenna radiating RFI under the hood of the vehicle. Taken together, the copper conductor and core creates a wire that is 40-50 ohms per foot. This provides a great balance of RFI-reducing resistance with power-transmitting conductance.

Tell me more about this particular set of MSD Super Conductor wires

This is a custom fit wire set, meaning that it is ready-to-install. No cutting, crimping, or assembly is required. The wire lengths of each wire in the set are shown in the specifications, below. While a custom fit wire set means less work for the installer, it also means that there is no opportunity to adjust wire lengths to accomodate a preferred routing. In general, the lengths are long enough to accomodate routing that brings the wires down and alongside (if not under) the exhaust manifold. We have purposely not listed any of the MSD Super Conductor wiresets that are made to route over the valve covers, as that is not consistent with wise spark plug wire routing in an EFI application. Compare the lengths shown in the specifications to your requirements. If they don't work for you then you may want to consider a universal set that allows you to custom cut each wire length.

Does this set of MSD Super Conductor wires fit my factory distributor?

This MSD Super Conductor wire set has HEI style (spark plug top) connectors for the distributor or coil. That may or may not be different from your factory distributor or coil, so do check. If your distributor does not have HEI style connectors then contact us and we can help you find a set of MSD Super Conductor wires with socket-style distributor connectors. But be prepared as we are going to use the opportunity to explain to you the huge advantage that a more modern distributor setup will have for your EFI application. We encourage the use of the HyperSpark distributor, which allows you to maintain a "factory" look without sacrificing the benefits of a modern ignition.

Here is what Holley says about this MSD Super Conductor wire set

Reliability is just as important as performance in marine applications and MSD's spark plug wires are up for the task. MSD wires are designed with a tough, high heat sleeve that also provides excellent abrasion protection. Dual Crimp terminals provide the strongest connections to the wire and lock to the spark plug terminal.

Features And Benefits

• Bolt-on performance
• Wires are precut to exact specifications
• Custom fit for make and model listed.

The MSD 32349 Superconductor Wire Set fits:

• Chevrolet Bel Air Big Block V8 1963-1963
• Chevrolet Bel Air Big Block V8 1965-1975
• Chevrolet Biscayne Big Block V8 1963-1963
• Chevrolet Biscayne Big Block V8 1965-1972
• Chevrolet Blazer Big Block V8 1973-1974
• Chevrolet Brookwood Big Block V8 1969-1972
• Chevrolet C10 Big Block V8 1975-1980
• Chevrolet C10 Pickup Big Block V8 1968-1974
• Chevrolet C10 Suburban Big Block V8 1968-1980
• Chevrolet C1500 Big Block V8 1990-1993
• Chevrolet C20 Big Block V8 1975-1986
• Chevrolet C20 Pickup Big Block V8 1968-1974
• Chevrolet C20 Suburban Big Block V8 1968-1986
• Chevrolet C2500 Big Block V8 1991-2000
• Chevrolet C2500 Suburban Big Block V8 1992-1999
• Chevrolet C30 Big Block V8 1975-1986
• Chevrolet C30 Pickup Big Block V8 1967-1974
• Chevrolet C3500 Big Block V8 1988-2000
• Chevrolet Camaro Big Block V8 1967-1972
• Chevrolet Caprice Big Block V8 1966-1976
• Chevrolet Chevelle Big Block V8 1965-1973
• Chevrolet Chevy II Big Block V8 1968-1968
• Chevrolet Corvette Big Block V8 1965-1974
• Chevrolet El Camino Big Block V8 1966-1975
• Chevrolet Estate Big Block V8 1969-1970
• Chevrolet Express 3500 Big Block V8 1996-2000
• Chevrolet G10 Van Big Block V8 1973-1974
• Chevrolet G20 Big Block V8 1976-1976
• Chevrolet G20 Van Big Block V8 1973-1974
• Chevrolet G30 Big Block V8 1975-1976
• Chevrolet G30 Big Block V8 1988-1996
• Chevrolet G30 Van Big Block V8 1973-1974
• Chevrolet Impala Big Block V8 1963-1963
• Chevrolet Impala Big Block V8 1965-1976
• Chevrolet K10 Big Block V8 1976-1976
• Chevrolet K10 Big Block V8 1979-1980
• Chevrolet K10 Pickup Big Block V8 1968-1974
• Chevrolet K10 Suburban Big Block V8 1968-1974
• Chevrolet K20 Big Block V8 1976-1978
• Chevrolet K20 Big Block V8 1980-1980
• Chevrolet K20 Pickup Big Block V8 1968-1974
• Chevrolet K20 Suburban Big Block V8 1968-1974
• Chevrolet K20 Suburban Big Block V8 1985-1985
• Chevrolet K2500 Big Block V8 1991-2000
• Chevrolet K2500 Suburban Big Block V8 1992-1999
• Chevrolet K30 Big Block V8 1977-1977
• Chevrolet K30 Big Block V8 1980-1986
• Chevrolet K30 Pickup Big Block V8 1968-1974
• Chevrolet K3500 Big Block V8 1988-2000
• Chevrolet K5 Blazer Big Block V8 1976-1978
• Chevrolet Kingswood Big Block V8 1969-1972
• Chevrolet Laguna Big Block V8 1973-1975
• Chevrolet Malibu Big Block V8 1965-1967
• Chevrolet Malibu Big Block V8 1973-1975
• Chevrolet Monte Carlo Big Block V8 1970-1975
• Chevrolet Nova Big Block V8 1969-1972
• Chevrolet P10 Van Big Block V8 1973-1973
• Chevrolet P20 Van Big Block V8 1970-1971
• Chevrolet P20 Van Big Block V8 1973-1973
• Chevrolet P30 Big Block V8 1981-1982
• Chevrolet P30 Big Block V8 1997-1999
• Chevrolet P30 Van Big Block V8 1970-1974
• Chevrolet R20 Big Block V8 1987-1988
• Chevrolet R20 Suburban Big Block V8 1987-1988
• Chevrolet R2500 Big Block V8 1989-1989
• Chevrolet R2500 Suburban Big Block V8 1989-1991
• Chevrolet R30 Big Block V8 1987-1988
• Chevrolet R3500 Big Block V8 1989-1991
• Chevrolet Townsman Big Block V8 1969-1972
• Chevrolet V20 Suburban Big Block V8 1987-1988
• Chevrolet V2500 Suburban Big Block V8 1990-1990
• Chevrolet V30 Big Block V8 1987-1988
• Chevrolet V3500 Big Block V8 1989-1991
• GMC C15 Big Block V8 1975-1978
• GMC C15 Suburban Big Block V8 1975-1978
• GMC C15/C1500 Pickup Big Block V8 1968-1974
• GMC C15/C1500 Suburban Big Block V8 1968-1974
• GMC C1500 Big Block V8 1979-1980
• GMC C1500 Suburban Big Block V8 1979-1980
• GMC C25 Big Block V8 1975-1978
• GMC C25 Suburban Big Block V8 1975-1978
• GMC C25/C2500 Pickup Big Block V8 1968-1974
• GMC C25/C2500 Suburban Big Block V8 1968-1974
• GMC C2500 Big Block V8 1979-1986
• GMC C2500 Big Block V8 1991-2000
• GMC C2500 Suburban Big Block V8 1979-1986
• GMC C2500 Suburban Big Block V8 1992-1999
• GMC C35 Big Block V8 1975-1978
• GMC C35/C3500 Pickup Big Block V8 1968-1974
• GMC C3500 Big Block V8 1979-1986
• GMC C3500 Big Block V8 1988-2000
• GMC G25 Big Block V8 1975-1976
• GMC G35 Big Block V8 1976-1976
• GMC G35/G3500 Van Big Block V8 1973-1974
• GMC G3500 Big Block V8 1988-1996
• GMC Jimmy Big Block V8 1973-1974
• GMC Jimmy Big Block V8 1976-1976
• GMC K15 Big Block V8 1976-1976
• GMC K15/K1500 Pickup Big Block V8 1968-1974
• GMC K15/K1500 Suburban Big Block V8 1968-1974
• GMC K1500 Big Block V8 1979-1980
• GMC K25 Big Block V8 1976-1978
• GMC K25 Suburban Big Block V8 1976-1977
• GMC K25/K2500 Pickup Big Block V8 1968-1974
• GMC K25/K2500 Suburban Big Block V8 1968-1974
• GMC K2500 Big Block V8 1991-2000
• GMC K2500 Suburban Big Block V8 1992-1999
• GMC K35/K3500 Pickup Big Block V8 1968-1974
• GMC K3500 Big Block V8 1979-1986
• GMC K3500 Big Block V8 1988-2000
• GMC P1500 Big Block V8 1979-1979
• GMC P25/P2500 Van Big Block V8 1970-1971
• GMC P35 Big Block V8 1975-1978
• GMC P35/P3500 Van Big Block V8 1970-1971
• GMC P35/P3500 Van Big Block V8 1973-1974
• GMC R2500 Big Block V8 1987-1989
• GMC R2500 Suburban Big Block V8 1987-1991
• GMC R3500 Big Block V8 1987-1991
• GMC Savana 3500 Big Block V8 1996-2000
• GMC Sprint Big Block V8 1971-1975
• GMC V3500 Big Block V8 1987-1991