5.0 · 1 review
SKU: 556-128

Kit - Big Wire 8 Cylinder Smart Coil Kit

$779.99
FREE delivery
Description

ABOUT THIS PRODUCT

Do you need precision control over your ignition system, Would your combination benefit from Individual Cylinder Timing Control, Are you experiencing spark issues with your Stock Coils, Are you wanting to convert your Turbocharged Big Block Monstrosity to Coil-Near-Plug,. Problem solved, introducing the Holley EFI Big-Wire C-N-P Kit containing everything you need to upgrade your ignition system to handle 5.5+ HP per Cubic Inch

Product Features:
  • "Big Wire" Sub Harness- Pre wired with 12ga Power and Grounds, for optimal performance.
  • Peak Voltage - 44,000 Volts
  • Peak Output - 102 Mj
  • Maximum Battery Voltage 17.0 Volts
  • Upgrading a Non C-N-P Main Harness requires the Holley Universal Coil-On-Plug Harness, P/N 558-307 to complete the installation.
  • Contains two Terminated Sub-Harnesses, and Eight Holley Smart Coils, 3 ft. of wiring loom for a professional appearing installation.
  • Sub Harness features Fully Terminated Coil Connectors, a 7 Pin Metripak Connector used on several Holley EFI C-N-P Main Harnesses, and 3 loose wires for a quick installation.
Specifications
Brand
Holley EFI (770)
SKU
556-128
Product type
Automotive
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Shipping Information

Free shipping on all orders. Most items ship next business day after your order is placed.

Returns Policy

Returns are accepted when the product is in its original, unopened container. Contact us if you have questions about your order.

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Customer Reviews

5.0

Based on 1 review

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C
Chris W. Verified Buyer
07/05/2025

Highly recommend

Good experience overall from checkout to delivery.

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