{"product_id":"smart-coil-kit-8-cyl","title":"Holley EFI Smart Coil Kit 8-Cylinder — E-Core Coil-Near-Plug with Wiring Harness","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Holley EFI\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eHolley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/eyLfF7jH2vw\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\nUnleash the full ignition potential of your 8-cylinder engine with the Holley EFI Smart Coil Kit. This comprehensive set of eight E-Core, coil-near-plug (CNP) ignition coils is engineered to deliver a powerful 44,000V spark, ensuring complete combustion and maximizing horsepower and torque. Designed for high-performance applications, this kit includes a complete wiring harness, providing everything you need for a straightforward upgrade to a superior ignition system. Experience sharper throttle response and more consistent power delivery across the entire RPM range.\u003ch2\u003eSuperior Spark \u0026amp; Unrivaled Performance\u003c\/h2\u003eThe Holley EFI Smart Coil Kit represents the pinnacle of ignition technology, offering significant advantages over traditional ignition systems. Each E-Core smart coil is designed for optimal energy transfer and heat dissipation, ensuring reliable performance even under extreme conditions. The coil-near-plug configuration eliminates long spark plug wires, reducing resistance and interference, which translates directly to a more efficient and powerful spark at the plug. This results in improved fuel economy, reduced emissions, and a noticeable boost in engine performance.\u003ch3\u003eKey Features \u0026amp; Performance Advantages:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete 8-Cylinder Kit:\u003c\/strong\u003e Includes eight high-performance E-Core smart coils for a full engine upgrade.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowerful 44,000V Output:\u003c\/strong\u003e Delivers an intense, consistent spark for optimal combustion and increased power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil-Near-Plug (CNP) Design:\u003c\/strong\u003e Minimizes spark energy loss and electromagnetic interference for maximum efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eE-Core Technology:\u003c\/strong\u003e Ensures superior energy transfer and durability, even in demanding environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes Wiring Harness:\u003c\/strong\u003e Provides a complete, ready-to-install solution, simplifying the upgrade process.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Throttle Response:\u003c\/strong\u003e Experience quicker, more precise engine reactions to throttle inputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Fuel Efficiency:\u003c\/strong\u003e More complete combustion leads to better fuel utilization.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMale HEI Connector:\u003c\/strong\u003e Ensures broad compatibility with various ignition setups.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil Type:\u003c\/strong\u003e Smart Coil, E-Core\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Coil-Near-Plug (CNP)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Output:\u003c\/strong\u003e 44,000 Volts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e Set of 8 Coils\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Wiring Harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Male HEI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 556-127\u003c\/li\u003e\n\u003c\/ul\u003eUpgrade your ignition system with the Holley EFI Smart Coil Kit and unlock the true potential of your 8-cylinder engine. This kit is an essential component for any serious performance build, delivering reliability and power you can feel. For the best in high-performance ignition, choose GGCRACING.\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Holley EFI products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-pro-digital-dash-w-6-86in-screen\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash 6.86in Touchscreen — Universal Upgrade\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pro-digital-dash-panel\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Pro Digital Dash Panel Assembly — Programmable Gauge Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/efi-dash-7-dash-bezel-62-65-nova\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Dash Bezel for 62-65 Chevy Nova — Black Plastic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/bbf-fe-efi-hyperspark-distributor\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor - Ford FE-Series Big Block Sniper EFI Compatible\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/hyperspark-distributor-amc-v8-290-401\" style=\"color:#0066cc;text-decoration:none;\"\u003eHolley EFI Hyperspark Distributor Hall Effect — Fits AMC V8 290-401\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Holley EFI Smart Coil Kit 8-Cylinder \\u2014 E-Core Coil-Near-Plug with Wiring Harness\",\"description\":\"Maximize ignition performance with the Holley EFI Smart Coil Kit. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Holley EFI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Holley EFI Smart Coil Kit 8-Cylinder \\u2014 E-Core Coil-Near-Plug with Wiring Harness?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. 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