{"product_id":"advance-headers-holden-torana-ht-hg-v8-extractors-a413","title":"Advance Headers | Mild Steel Exhaust Extractors | Holden Torana LH LX Kingswood HT HG 253 308 V8 | A413","description":"\u003ch2\u003eAdvance Headers High-Performance Mild Steel Exhaust Extractors for HOLDEN Torana LH-LX \u0026amp; Kingswood HT-HG 253 \u0026amp; 308 V8 Engines\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe Advance Headers Performance Exhaust Extractors (A413) are precision-engineered for classic Australian Holden platforms running the legendary 4.2-Litre 253 and 5.0-Litre 308 iron-block V8 engines. Specially mapped to service both mid-sized muscle cars like the Torana LH-LX series and full-sized HT-HG Kingswood\/Premier models, this heavy-duty tubular header upgrade eliminates the intense backpressure limitations of stock factory cast-iron log manifolds to unleash that iconic crisp, deep Aussie V8 rumbling note and maximize power routing.\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 Performance Exhaust Extractor Header Set (Left \u0026amp; Right Bank Assembly)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTuned mandrel-bent primary piping pathways maintain uniform internal diameters, optimizing cylinder gas scavenging velocity and throttle response profiles across the rev range\u003c\/li\u003e\n\u003cli\u003eSubstantially optimizes low-to-mid range torque acceleration—giving classic street cruisers, muscle restorations, and weekend drag cars a noticeable performance boost\u003c\/li\u003e\n\u003cli\u003eHeavy-duty mild steel construction structurally built to handle severe classic car engine bay thermal expansions and demanding high-performance heat cycles safely\u003c\/li\u003e\n\u003cli\u003eThick, precision laser-cut cylinder head flanges maintain flush mating boundaries to guard permanently against face warping and high-pressure exhaust gas leaks\u003c\/li\u003e\n\u003cli\u003eEngineered with versatile cross-platform routing paths to step around tight classic steering boxes, subframe mounts, and underbody structural points cleanly\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\"\u003eA413\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 253ci (4.2L) \u0026amp; 308ci (5.0L) Pushrod V8 Carburettor Engines Only\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 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\"\u003eNo on standard floors\/Torana (HT-HG models with column-shift automatic linkages require custom rod modification)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003e⚠️ Crucial Transmission \u0026amp; Linkage Fitment Compatibility Warnings:\u003c\/strong\u003e\u003cbr\u003e1. \u003cstrong\u003ePowerglide Transmission Exclusion:\u003c\/strong\u003e This extractor set (Part No. \u003cstrong\u003eA413\u003c\/strong\u003e) will \u003cstrong\u003eNOT fit vehicles equipped with a 2-speed GM Powerglide automatic transmission\u003c\/strong\u003e due to interference issues with the wide transmission case housing contours.\u003cbr\u003e2. \u003cstrong\u003eTorana Drivetrain Clearances:\u003c\/strong\u003e This kit is fully clearanced and configured to clear popular \u003cstrong\u003eGM Turbo 350 (TH350) and Turbo 400 (TH400) automatic transmission conversions\u003c\/strong\u003e when fitted into LH and LX series Torana engine bays layout paths smoothly.\u003cbr\u003e3. \u003cstrong\u003eHT-HG Linkage Modification Note:\u003c\/strong\u003e If installing this product onto an HT or HG series Holden running a \u003cstrong\u003ecolumn-shift automatic transmission, the mechanical selector shift linkages must be modified\/bent customly\u003c\/strong\u003e to clear the trailing primary tubes near the firewall block area.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePlease Note: Professional installation by an exhaust specialist or qualified classic muscle automotive mechanic is highly recommended to guarantee proper system mapping 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 Applications for A413 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 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 \/ G.M.H.\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap; font-weight: bold;\"\u003eTorana (S \/ SL \/ SLR \/ SS)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap;\"\u003e1974 – 1978\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e4-Door Sedan \/ 3-Door Hatchback\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eLH \/ LX Series Only\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eHolden 4.2L 253 \u0026amp; 5.0L 308 V8 Petrol\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 | Performance tubular design fits cleanly past steering setups. Accommodates Turbo 350 and Turbo 400 gearbox pathways perfectly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap; font-weight: bold;\"\u003eHolden \/ G.M.H.\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap; font-weight: bold;\"\u003eKingswood \/ Premier \/ Brougham \/ Monaro\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; white-space: nowrap;\"\u003e1969 – 1971\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eSedan \/ Station Wagon \/ Coupe \/ Utility \/ Panel Van\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eHT \/ HG Series Only\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eHolden 4.2L 253 \u0026amp; 5.0L 308 V8 Petrol\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 | Unclogs restrictive factory cast manifolds. Column-shift auto linkages require minor physical alteration to clear. Strictly will NOT fit Powerglide transmissions.\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":40480437796946,"sku":"A413","price":780.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/7718\/9458\/files\/GenericHeader.png?v=1744853371","url":"https:\/\/fastautoparts.com.au\/products\/advance-headers-holden-torana-ht-hg-v8-extractors-a413","provider":"Fast Auto Parts Australia","version":"1.0","type":"link"}