{"product_id":"yella-terra-holden-l67-74-71mm-snout-boost-upgrade-yt3800kit2-74","title":"Yella Terra Holden L67 High-Boost Billet Snout Upgrade Kit — 74mm \/ 71mm","description":"\u003cp\u003eThis is Yella Terra’s high-boost billet-snout package for the Holden \/ Buick 3800 L67\/L32 supercharged V6. It replaces the factory front cover with the supplier’s quick-change billet snout and uses 74 mm or 71 mm pulleys to increase blower speed for more aggressive combinations.\u003c\/p\u003e\u003ch3\u003eHigh-boost 74 mm \/ 71 mm package\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSelectable 74 mm and 71 mm blower-pulley sizes.\u003c\/li\u003e\n\u003cli\u003eYella Terra strongly recommends these drive ratios only with an intercooled setup.\u003c\/li\u003e\n\u003cli\u003eA custom ECU tune is required.\u003c\/li\u003e\n\u003cli\u003eOn Yella Terra’s stock-standard L67 automatic test combination, the supplier reports up to approximately 40% more maximum rear-wheel power and up to approximately 60% more torque. Results depend on the complete vehicle and engine setup.\u003c\/li\u003e\n\u003cli\u003eFour-cap-screw pulley retention enables fast pulley changes without specialised press tools.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKit contents\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSupercharger end case.\u003c\/li\u003e\n\u003cli\u003eAlloy extension housing.\u003c\/li\u003e\n\u003cli\u003eAnodised alloy top pulley.\u003c\/li\u003e\n\u003cli\u003eOversize idler pulley.\u003c\/li\u003e\n\u003cli\u003eGM supercharger gasket.\u003c\/li\u003e\n\u003cli\u003eFront-cover sealant.\u003c\/li\u003e\n\u003cli\u003eSupercharger oil.\u003c\/li\u003e\n\u003cli\u003eDetailed fitting instructions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e These are high-boost pulley ratios. Intercooling, suitable fuel delivery and a custom tune are essential. Higher blower speed can increase supercharger wear.\u003c\/p\u003e\u003ch2\u003eProduct System\u003c\/h2\u003e\u003cul\u003e\u003cli\u003eTurbo \u0026amp; Forced Induction\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHolden Commodore Vs L67\u003c\/li\u003e\n\u003cli\u003eHolden Commodore Vt Vt Ii L67\u003c\/li\u003e\n\u003cli\u003eHolden Commodore Vx L67\u003c\/li\u003e\n\u003cli\u003eHolden Commodore Vy L67\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eConfirm chassis, engine, drivetrain and production-year compatibility before ordering.\u003c\/p\u003e\u003ch2\u003eAvailable Options\u003c\/h2\u003e\u003ch3\u003ePulley Size\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e74 mm\u003c\/li\u003e\n\u003cli\u003e71 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSupplier Part Number\u003c\/h2\u003e\u003cp\u003eYT3800KIT2-74\u003c\/p\u003e\u003ch2\u003eBuilt by Boost \u0026amp; Tune Support\u003c\/h2\u003e\u003cp\u003eBBT can assist with fitment review, installation, supporting modifications, configuration and calibration requirements where applicable.\u003c\/p\u003e","brand":"Yella Terra","offers":[{"title":"74 mm","offer_id":43808041697347,"sku":"YT3800KIT2-74","price":1150.0,"currency_code":"AUD","in_stock":true},{"title":"71 mm","offer_id":43808041730115,"sku":"YT3800KIT2-74","price":1150.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0703\/0659\/4883\/files\/Holden_SC_kit__67661.1730344550_7210a20c-a4c7-4cc6-baeb-aaba8643f068.webp?v=1789110441","url":"https:\/\/builtbyboostandtune.com.au\/products\/yella-terra-holden-l67-74-71mm-snout-boost-upgrade-yt3800kit2-74","provider":"BUILT BY BOOST AND TUNE","version":"1.0","type":"link"}