Ultra Plug Wire Set BBC Over V/C Red

The Ultra Plug Wire Set BBC Over V/C Red from Moroso is engineered for serious big block Chevy builders who demand reliable ignition performance in tight engine compartments. This complete 8-wire spark plug wire kit is specifically designed to route over the valve cover, eliminating the clearance conflicts that plague traditional under-valve-cover routing on modified BBC platforms. Whether you're building a street performer, a strip-ready race engine, or a show car with custom headers, this wire set solves the packaging challenge without compromising spark delivery or EMI shielding.

Each wire features an 8 mm spiral core construction that suppresses radio frequency interference while maintaining consistent impedance across the entire ignition circuit. The straight plug boots mate directly to HEI-style terminals, ensuring a secure, vibration-proof connection that won't rattle loose under sustained high-RPM operation or heavy acceleration. The red jacket not only provides high-temperature protection but also offers excellent visibility for ignition diagnostics and engine bay aesthetics. Moroso's manufacturing standards guarantee consistent wire length and boot fit, critical factors when working with aftermarket headers, tall-deck blocks, or non-standard valve cover geometry on big block applications.

This wire set is ideal for builders running HEI distributors, aftermarket ignition systems with HEI-compatible terminals, or OEM BBC ignition setups adapted for custom engine bays. The over-valve-cover routing makes it the go-to choice when header clearance is tight or when dual quad carburetors and custom intake manifolds limit underhood space. Installation is straightforward—route the wires along the valve covers and secure them with the provided or aftermarket clamps. Compatible with big block Chevrolet engines from 396 to 502 cubic inches, the Ultra Plug Wire Set BBC Over V/C Red delivers OEM-level reliability with custom-build flexibility.