Many big block Chevy builds run an HEI-style cap with a remote or external coil, which changes the wire length needed at the distributor compared with a coil-in-cap HEI. This set is cut for 366-454 big block Chevrolet engines using that external coil arrangement, routed over the header and valve cover. Multi-angle boots let the plug end be indexed away from header tubes so the boot is not pulled against a hot primary.

Moroso 52039 Technical Specifications:

• 8mm Ultra 350 wire carries 350 ohms of resistance per foot for consistent spark energy with OE level radio interference suppression.
• Stainless nickel alloy conductor is wound around a conductive fiberglass core for strength under vibration and pull.
• Cut for 366-454 big block Chevrolet engines with an HEI-style cap that does not carry the coil in the cap, routed over the header and valve cover.
• Two layer EPDM jacket separated by a reinforcing braid handles underhood heat and adds pull strength.
• Silicone boots with snap lock terminals hold a positive connection at the plug and the cap.
• Multi-angle boots let the plug end be rotated for the cleanest routing in a crowded engine bay.
• Red wire, eight cylinder set, manufactured in the USA.

Note: this set is for HEI-style caps without the coil in the cap; a coil-in-cap distributor needs the matching coil-in-cap version.