8.5mm Universal Ignition Wires with 180° Plug Boots - Black Holden And the best part: this

And the best part: this kit comes with everything you need

Upgrade your Chevy Big Block 396-427 engines with a SFI-certified performance harmonic balancer designed to control crankshaft vibration and reduce harmful harmonics across the RPM range

4 L / 267 in³

Rear Maximum Height: 5

Peak Current: 220 Milliamperes (Ma)

8.5mm Universal Ignition Wires with 180° Plug Boots - Black Holden And the best part: thisDesigned for universal ignition system applications, this spark plug wire set helps support clean routing, stable ignition performance, and long term heat resistance around tight engine bay layouts. Spark Delivery & Ignition Performance The 8. 5 mm outside diameter uses spiral wound core material with radio frequency interference noise suppression to help transfer spark energy while reducing electrical interference in compatible ignition systems.