{"product_id":"pacemaker-ph5310-tri-y-headers-holden-hq-wb-small-block-chev-v8","title":"Pacemaker | 1 5\/8\" Tri-Y Headers | Holden HQ-WB Small Block Chev 283-400 V8 | PH5310 L\/R","description":"\u003ch2\u003ePacemaker Tri-Y Performance Headers - Holden HQ-WB Small Block Chev V8 - PH5310 L\/R\u003c\/h2\u003e\n\u003cp\u003eUpgrade the performance of your classic Holden HQ through WB series with the Pacemaker PH 5310 Tri-Y headers. Specifically designed for Small Block Chevrolet V8 conversions (ranging from 283 to 400 cubic inches), these headers are the industry standard for fitment and flow. The Tri-Y design is engineered to deliver a significant increase in low-to-mid range torque, making it perfect for street performance and cruisers. Constructed with 1⅝\" (41mm) primary pipes and 2\" (51mm) secondaries, these headers provide the ideal balance of exhaust gas velocity and volume. Proudly Australian-made, they ensure high-quality mandrel-bent durability for your SBC-powered Holden.\u003c\/p\u003e\n\u003ch2\u003eFeatures:\u003c\/h2\u003e\n\u003cp\u003eThis product offers the following performance features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTri-Y Design:\u003c\/strong\u003e Optimized for a broad power band and improved mid-range torque.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile SBC Fitment:\u003c\/strong\u003e Compatible with 283, 302, 305, 307, 327, 350, and 400 Small Block Chev engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Piping:\u003c\/strong\u003e Mandrel-bent 1⅝\" (41mm) primary pipes for smooth exhaust flow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Outlet:\u003c\/strong\u003e 2¼\" (57mm) outlet designed for efficient scavenging and easy integration into performance exhaust systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessories:\u003c\/strong\u003e Fully compatible with Power Steering and Air Conditioning.\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: 14px; margin-bottom: 20px;\"\u003e\n\u003cstrong\u003eProduct Specifications for PH 5310 L\/R\u003c\/strong\u003e\n\u003cdiv style=\"width: 100%; overflow-x: auto; margin-top: 10px;\"\u003e\n\u003ctable style=\"min-width: 800px; border-collapse: collapse; width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f0f0f0; border-bottom: 2px solid #333;\"\u003e\n\u003cth style=\"padding: 10px 5px; text-align: left; white-space: nowrap;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding: 10px 5px; text-align: left; white-space: nowrap;\"\u003eValue\u003c\/th\u003e\n\u003cth style=\"padding: 10px 5px; text-align: left; white-space: nowrap;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"padding: 10px 5px; text-align: left; white-space: nowrap;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 5px; background-color: #f9f9f9; font-weight: bold; white-space: nowrap;\"\u003ePart #\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 5px; white-space: nowrap;\"\u003ePH 5310\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 5px; background-color: #f9f9f9; font-weight: bold; white-space: nowrap;\"\u003eGasket\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 5px; white-space: nowrap;\"\u003eDSF 9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 5px; background-color: #ffffff; font-weight: bold; white-space: nowrap;\"\u003ePrimary Pipe\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 5px; white-space: nowrap;\"\u003e1⅝\" (41mm)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 5px; background-color: #ffffff; font-weight: bold; white-space: nowrap;\"\u003eSecondary Pipe\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 5px; white-space: nowrap;\"\u003e2\" (51mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 5px; background-color: #f9f9f9; font-weight: bold; white-space: nowrap;\"\u003eOutlet\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 5px; white-space: nowrap;\"\u003e2¼\" (57mm)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 5px; background-color: #f9f9f9; font-weight: bold; white-space: nowrap;\"\u003eFitting Time\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 5px; white-space: nowrap;\"\u003e2 Hrs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 5px; background-color: #ffffff; font-weight: bold; white-space: nowrap;\"\u003eP\/Steering\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 5px; white-space: nowrap;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 5px; background-color: #ffffff; font-weight: bold; white-space: nowrap;\"\u003eAir Con\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 5px; white-space: nowrap;\"\u003eYes\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\u003eImportant Notes:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e Will fit Turbo 400 and Powerglide automatic transmissions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Compatibility:\u003c\/strong\u003e Will \u003cstrong\u003eNOT\u003c\/strong\u003e fit slant plug heads (Part No. PH5315 required) or raised port heads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Must be used with original engine mounting spacers or Pacemaker spacers (Part # PEMP 350). Note: Spacers are side-specific (RH: 1¾” high, LH: 1¼” high).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eImportant Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe image shown may not reflect the actual product\u003c\/li\u003e\n\u003cli\u003eShipping times may vary depending on destination and stock availability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eVehicle Applications:\u003c\/h3\u003e\n\u003cdiv style=\"width: 100%; overflow-x: auto; margin-top: 10px;\"\u003e\n\u003ctable style=\"min-width: 1100px; border-collapse: collapse; width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f0f0f0; border-bottom: 2px solid #333;\"\u003e\n\u003cth style=\"padding: 10px 15px; text-align: left; white-space: nowrap;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"padding: 10px 15px; text-align: left; white-space: nowrap;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 10px 15px; text-align: left; white-space: nowrap;\"\u003eFrom\u003c\/th\u003e\n\u003cth style=\"padding: 10px 15px; text-align: left; white-space: nowrap;\"\u003eTo\u003c\/th\u003e\n\u003cth style=\"padding: 10px 15px; text-align: left; white-space: nowrap;\"\u003eBody\u003c\/th\u003e\n\u003cth style=\"padding: 10px 15px; text-align: left; white-space: nowrap;\"\u003eSeries\u003c\/th\u003e\n\u003cth style=\"padding: 10px 15px; text-align: left; white-space: nowrap;\"\u003eEngine\u003c\/th\u003e\n\u003cth style=\"padding: 10px 15px; text-align: left; white-space: nowrap;\"\u003eVariant\u003c\/th\u003e\n\u003cth style=\"padding: 10px 15px; text-align: left; white-space: nowrap;\"\u003eDrivetrain\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 15px; white-space: nowrap; vertical-align: middle;\"\u003eHolden\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 15px; white-space: nowrap; vertical-align: middle;\"\u003eKingswood \/ Belmont \/ Statesman\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 15px; white-space: nowrap; vertical-align: middle;\"\u003e1971\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 15px; white-space: nowrap; vertical-align: middle;\"\u003e1984\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 15px; white-space: nowrap; vertical-align: middle;\"\u003eSedan \/ Ute \/ Wagon \/ Panel Van\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 15px; white-space: nowrap; vertical-align: middle;\"\u003eHQ, HJ, HX, HZ, WB\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 15px; white-space: nowrap; vertical-align: middle;\"\u003eSmall Block Chev (283-400)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 15px; white-space: nowrap; vertical-align: middle;\"\u003eManual \u0026amp; Automatic\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 15px; white-space: nowrap; vertical-align: middle;\"\u003eRWD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\n.warranty-table-wrapper { overflow-x: auto; margin: 20px 0; }\n.warranty-table { width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; min-width: 400px; }\n.warranty-table th { background-color: #111; color: #fff; text-align: left; padding: 12px; }\n.warranty-table td { padding: 12px; border-bottom: 1px solid #ddd; }\n.warranty-table tr:nth-child(even) { background-color: #f9f9f9; }\n.warranty-title { font-size: 18px; font-weight: bold; margin-bottom: 10px; font-family: Arial, sans-serif; margin-top: 25px; }\n\u003c\/style\u003e\n\u003cdiv class=\"warranty-title\"\u003eWarranty Information\u003c\/div\u003e\n\u003cdiv style=\"width: 100%; overflow-x: auto; margin-top: 10px;\"\u003e\n\u003ctable class=\"warranty-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 12px; text-align: left; background-color: #111; color: #fff;\"\u003eProduct\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; background-color: #111; color: #fff;\"\u003eWarranty Period\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003ePacemaker Headers\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003eTwo (2) years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003ePacemaker King Brown 4x4 Exhaust systems\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003eFive (5) years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003ePacemaker Sports exhaust systems\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003eFive (5) years.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003eFabrication products and accessories\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border-bottom: 1px solid #ddd;\"\u003eOne (1) year.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003ePayment \u0026amp; Security:\u003c\/strong\u003e\u003cbr\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":"Pacemaker Headers","offers":[{"title":"Default Title","offer_id":40440579194962,"sku":"PH5310 L\/R","price":984.01,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/7718\/9458\/files\/3db4a79e-2ced-45e6-a368-d52b3ff3aab7_43ec0ab9-a102-42d1-a717-6b55eecd4be8.png?v=1685503464","url":"https:\/\/fastautoparts.com.au\/products\/pacemaker-ph5310-tri-y-headers-holden-hq-wb-small-block-chev-v8","provider":"Fast Auto Parts Australia","version":"1.0","type":"link"}