{"product_id":"gsc-power-division-billet-s3-camshaft-set-subaru-wrx-sti-ej255-ej257-intake-avcs-gda-gdb-grb-gvb-280-billet","title":"GSC Power Division Billet S3 Camshaft Set - Subaru WRX\/STI EJ255\/EJ257 Intake AVCS (GDA\/GDB\/GRB\/GVB) - 280° Billet","description":"\u003ch2\u003eGSC Power-Division Billet S3 Camshaft Set - Subaru WRX\/STI EJ255\/EJ257 Intake AVCS (GDA\/GDB\/GRB\/GVB) - 280° Billet\u003c\/h2\u003e\n\n\u003cp\u003eGSC Power-Division has built a strong reputation producing high quality billet camshafts for serious performance builds, and the S3 series represents their most aggressive street and competition grind. Designed for \u003cstrong\u003eSubaru WRX and STI\u003c\/strong\u003e engines chasing serious power, these billet S3 cams are ground from solid billet material for superior strength and consistency over cast alternatives. With a target power band of 750–1000 WHP and a usable rev range of 4,500–9,500 RPM, these are purpose-built for high horsepower applications that demand reliable, repeatable valvetrain performance.\u003c\/p\u003e\n\n\u003cp\u003eThis listing covers the GSC Power-Division Billet S3 camshaft set for \u003cstrong\u003eSubaru EJ255\u003c\/strong\u003e and \u003cstrong\u003eEJ257\u003c\/strong\u003e engines fitted with intake-only AVCS. Compatible chassis include the \u003cstrong\u003eGDA\u003c\/strong\u003e, \u003cstrong\u003eGDB\u003c\/strong\u003e, \u003cstrong\u003eGRB\u003c\/strong\u003e, and \u003cstrong\u003eGVB\u003c\/strong\u003e platforms covering the \u003cstrong\u003eWRX\u003c\/strong\u003e and \u003cstrong\u003eSTI\u003c\/strong\u003e model lines. This is a complete intake and exhaust camshaft set. Check product images for correct cam placement — long nose installs on the left side, short nose on the right.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e These camshafts require significant supporting modifications to realise their full potential. A built bottom end (sleeved or closed deck strongly recommended), built and ported heads with casting clearanced for the higher lift profile, and upgraded valve springs are all required. A standalone ECU or a speed density tune is strongly recommended to achieve proper idle characteristics. Head castings must be filed down slightly for lobe clearance — confirm this during installation. Must be fitted by an experienced engine builder. High zinc break-in oil is mandatory on flat tappet engines.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIntake — Advertised Duration: 280°, Duration @ 1.016mm (0.040 in): 240°, Peak Lift: 11.55mm, Centreline: 130°\u003c\/li\u003e\n  \u003cli\u003eExhaust — Advertised Duration: 280°, Duration @ 1.016mm (0.040 in): 241°, Peak Lift: 11.60mm, Centreline: 115°\u003c\/li\u003e\n  \u003cli\u003eMaterial: Billet construction\u003c\/li\u003e\n  \u003cli\u003eAVCS compatibility: Intake only\u003c\/li\u003e\n  \u003cli\u003eTarget power range: 750–1000 WHP\u003c\/li\u003e\n  \u003cli\u003eTarget rev range: 4,500–9,500 RPM\u003c\/li\u003e\n  \u003cli\u003eSKU: 7025S3\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eVehicle compatibility, fitment notes, and configuration details are provided in the tabs above. Please confirm your engine code, AVCS configuration, and chassis before ordering.\u003c\/p\u003e\n\n\u003cp\u003eNot sure if these camshafts suit your build? Contact our team at \u003ca href=\"mailto:sales@chicaneaustralia.com.au\"\u003esales@chicaneaustralia.com.au\u003c\/a\u003e for expert advice.\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":52403209240869,"sku":"7025S3","price":2020.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0918\/2943\/6709\/files\/GSC_207025_20cam-2.jpg?v=1779347748","url":"https:\/\/www.chicaneaustralia.com.au\/products\/gsc-power-division-billet-s3-camshaft-set-subaru-wrx-sti-ej255-ej257-intake-avcs-gda-gdb-grb-gvb-280-billet","provider":"Chicane Australia","version":"1.0","type":"link"}