{"product_id":"advance-headers-commodore-vb-vl-5-0l-efi-v8-swap-extractors-a314d","title":"Advance Headers | Mild Steel Exhaust Extractors | Holden Commodore VB-VL 5.0L EFI V8 Swap | A314D","description":"\u003ch2\u003eAdvance Headers High-Performance Mild Steel Conversion Extractors for HOLDEN Commodore VB to VL 5.0L EFI V8 Engine Swaps\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe Advance Headers Performance Engine Conversion Extractors (A314D) are precision-engineered for first-generation classic Holden Commodore VB, VC, VH, VK, and VL platforms undergoing a later-generation 5.0-Litre 304ci Fuel-Injected (EFI) V8 engine swap. Featuring a premium dual-outlet header configuration, this heavy-duty tubular system is mapped specifically to handle the structural changes required when dropping the modern high-port symmetrical EFI V8 block into early-model engine bays. It replaces highly restrictive custom configurations or stock cast iron log manifolds to maximize exhaust gas scavenging velocity and deliver an aggressive, balanced V8 roar.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"feature-block\"\u003e\n\u003cdiv class=\"feature-content pb-6\"\u003e\n\u003ch3 style=\"color: #e60000; font-weight: bold;\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003ePRODUCT CONTENTS:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Heavy-Duty Mild Steel Conversion Exhaust Extractor Header Set (Left \u0026amp; Right Dual Outlet Assembly)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePremium dual-outlet design configuration isolates cylinder exhaust tracks more efficiently down through dual primary paths for minimized high-RPM backpressure\u003c\/li\u003e\n\u003cli\u003eTuned mandrel-bent primary piping pathways map perfectly to high-port symmetrical VN-style EFI cylinder heads, ensuring uniform gas flow routing and maximizing engine efficiency\u003c\/li\u003e\n\u003cli\u003eSubstantially optimizes low-to-mid range torque delivery and throttle response—giving your retrofitted street cruiser or custom street\/strip machine a huge performance gain\u003c\/li\u003e\n\u003cli\u003eHeavy-duty mild steel construction structurally built to handle intense under-hood thermal transitions and demanding engine conversion operating environments safely\u003c\/li\u003e\n\u003cli\u003eThick, precision laser-cut cylinder head flanges maintain a flat, ultra-stable mating footprint to permanently guard against warping and high-pressure exhaust leaks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv class=\"specs\"\u003e\n\u003cul class=\"flex flex-col space-y-2 text-xs\"\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eBrand:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003eAdvance Headers\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003ePart Number:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003eA314D\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eMaterial:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003eMild Steel (Standard Finish)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eEngine Suitability:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003eHolden 5.0L 304ci EFI V8 Swap Engines Only (VN-VT Generation Blocks)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eHeader Configuration:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003eDual Outlet System Layout\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eComponent Type:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003ePerformance Exhaust Conversion Extractors \/ Headers\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eEstimated Fitting Time:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003e2.5 Hours\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"text-gray-500 font-semibold mr-1\"\u003eWelding\/Modification Required:\u003c\/span\u003e \u003cspan class=\"text-gray-700\"\u003eYes (Requires downstream dual-pipe exhaust fabrication to complete layout connection)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003e⚠️ Crucial Engine Conversion Fitment \u0026amp; Application Warnings:\u003c\/strong\u003e\u003cbr\u003e1. \u003cstrong\u003eConversion Specifics Only:\u003c\/strong\u003e This product (Part No. \u003cstrong\u003eA314D\u003c\/strong\u003e) is intended strictly for \u003cstrong\u003eengine swap applications\u003c\/strong\u003e where a later-model 5.0L EFI fuel-injected V8 engine is being retrofitted into an early \u003cstrong\u003eVB, VC, VH, VK, or VL Commodore chassis\u003c\/strong\u003e. It will not align with factory-fitted VN-VS models or early carburetted 253\/308 cylinder heads.\u003cbr\u003e2. \u003cstrong\u003eDownstream Dual Outlet Layout:\u003c\/strong\u003e Being a dedicated dual-outlet header design, this assembly does not converge into a single pipe under the gearbox. Your vehicle must be fitted with a custom or aftermarket dual exhaust system, and custom fabrication will be required to interface the headers with downstream piping components cleanly.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePlease Note: Due to the custom tolerances involved in engine swap conversions, professional installation by an exhaust specialist or a qualified conversion mechanic is highly recommended to guarantee proper system alignment and a perfect leak-free seal.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eImportant Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe image shown may not reflect the actual product design.\u003c\/li\u003e\n\u003cli\u003eEnsure your vehicle details match the application guide below before purchasing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"font-family: Arial, sans-serif; max-width: 100%; padding: 20px; border: 1px solid #ccc; border-radius: 5px; font-size: 1rem;\" class=\"product-details-container\"\u003e\n\u003ch2\u003eVehicle Conversion Applications for A314D Performance Holden V8 Extractors\u003c\/h2\u003e\n\u003cdiv style=\"width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: 10px;\"\u003e\n\u003ctable style=\"min-width: 1100px; border-collapse: collapse; font-size: 1rem; line-height: 1.5; width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f0f0f0; border-bottom: 3px solid #333;\"\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd; white-space: nowrap;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd; white-space: nowrap;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd; white-space: nowrap;\"\u003eYear Range Spec\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd;\"\u003eBody Type\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd;\"\u003eChassis Series\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd;\"\u003eEngine Conversion Details\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd; white-space: nowrap;\"\u003eFitting Time\u003c\/th\u003e\n\u003cth style=\"padding: 10px 8px; text-align: left; border: 1px solid #ddd;\"\u003eDrivetrain \/ Fitment Notes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap; font-weight: bold;\"\u003eHolden (Conversion)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap; font-weight: bold;\"\u003eCommodore \/ Calais \/ Berlina\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap;\"\u003e1978 – 1988 (EFI V8 Swap Era)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e4-Door Sedan \/ 5-Door Station Wagon\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eVB \/ VC \/ VH \/ VK \/ VL Series\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eHolden 5.0L 304ci Fuel-Injected V8 Conversion (High-Port Heads)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap;\"\u003e2.5 Hours\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eRWD | Conversion-specific layout routes primary paths safely down past early-generation K-frames and manual or automatic transmission footprints. Features dual outlet trailing tubes requiring a dual downpipe exhaust track.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003ePayment \u0026amp; Security\u003c\/h2\u003e\n\u003cp\u003eYour payment information is processed securely. We do not store credit card details nor have access to your credit card information.\u003c\/p\u003e","brand":"Advance Headers","offers":[{"title":"Default Title","offer_id":40480423542866,"sku":"A314D","price":765.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/7718\/9458\/files\/A314D-62-520x375.jpg?v=1747275262","url":"https:\/\/fastautoparts.com.au\/products\/advance-headers-commodore-vb-vl-5-0l-efi-v8-swap-extractors-a314d","provider":"Fast Auto Parts Australia","version":"1.0","type":"link"}