Selecting The Best Performance Spark Plug Wires
Just like a rotating assembly or suspension system, your ignition system is only as good as its weakest link. As often as they can be overlooked, plug wires may not make horsepower, but they can certainly hinder performance being the weak link. Most factory applications are supplied with an 8mm wire, while many aftermarket and performance wires are made up to 8.8mm.
Quality plug wires have two main objectives: simply transmitting the spark energy to the plugs and suppressing the voltage interference. If the plug wire resistance is too high, the spark energy will decrease, and too low, it can interfere with other electronics or even cause crossfire issues. Using a quality plug wire that is properly routed and inspected routinely, will help you to achieve the best performance out of your ignition system.
A Heli-Core wire like most aftermarket performance wires will be one of the best upgrades over a factory set of wires. A popular option commonly used on the average street and strip application are the Street-Fire wires from MSD, like Speedway part number 5475554. MSD also offers the 8.5mm Super Conductor Wire, recommended to be used with any ignition control box upgrade, under PN 54731359, It features a conductor that is helically wound around a special center core that is designed to suppress Electro Magnetic Interference (EMI). The Super Conductor wire will have as low as 40-50ohms per foot, while a factory set can have up to 1500ohms of resistance per foot. Speedway also carries several options that can be universal cut-to-fit or pre-cut ready to install wires from Accel, Moroso, Scott, and Taylor.