{"product_id":"bk-racing-high-performance-ecotec-intake-exhaust-valve-set","title":"BK Racing Performance Ecotec Valve BUNDLE | Intake \u0026 Exhaust","description":"\u003ch2\u003eComplete BK Racing Ecotec Performance Valve Set\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBK Racing High-Performance Ecotec Intake \u0026amp; Exhaust Valve Set\u003c\/strong\u003e combines our purpose-developed intake and exhaust valves into one complete \u003cstrong\u003e16-valve performance Ecotec valve set\u003c\/strong\u003e for GM 2.0L, 2.2L and 2.4L Ecotec engines.\u003c\/p\u003e\n\u003cp\u003eThese are not simply replacement valves made from a different material. Both the intake and exhaust valves were developed specifically for performance Ecotec applications with a focus on \u003cstrong\u003eairflow, durability, reduced unnecessary mass, and improved valve geometry\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eManufactured from \u003cstrong\u003e21-4N stainless steel\u003c\/strong\u003e and fully nitrided after final machining, this package gives engine builders a complete matched intake and exhaust valve solution designed for high-performance, racing, and high-RPM Ecotec engines.\u003c\/p\u003e\n\u003ch2\u003eDeveloped and Flow-Bench Tested\u003c\/h2\u003e\n\u003cp\u003eWe approached the intake and exhaust sides individually because they have different jobs.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eHF35.6 intake valve\u003c\/strong\u003e was developed with an emphasis on \u003cstrong\u003ecurtain area and low-lift airflow\u003c\/strong\u003e, rather than simply installing the largest valve possible. During prototype testing with \u003cstrong\u003eMWR Technologies\u003c\/strong\u003e, the BK Racing intake design demonstrated approximately \u003cstrong\u003e10 CFM more airflow than the OEM intake valve at .050\" lift\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eOur \u003cstrong\u003eperformance exhaust valve\u003c\/strong\u003e was developed around efficient exhaust flow, strength, and durability under sustained racing conditions. During flow-bench development with MWR Technologies, the BK Racing exhaust design also outflowed the OEM exhaust valve.\u003c\/p\u003e\n\u003cp\u003eRather than relying on theoretical improvements, both sides of the BK Racing Ecotec valve package were developed using actual flow-bench testing.\u003c\/p\u003e\n\u003ch2\u003e21-4N Stainless Steel with Full Nitriding\u003c\/h2\u003e\n\u003cp\u003eEvery valve in the 16-piece package is manufactured from \u003cstrong\u003e21-4N stainless steel\u003c\/strong\u003e, a high-strength valve material well suited to demanding performance applications.\u003c\/p\u003e\n\u003cp\u003eThe finished valves receive a \u003cstrong\u003efull nitrided treatment after final machining\u003c\/strong\u003e. This provides a hardened, wear-resistant surface without machining away the treated surface afterward.\u003c\/p\u003e\n\u003cp\u003eThe nitrided finish extends throughout the valve, including critical stem, keeper, and tip areas.\u003c\/p\u003e\n\u003ch2\u003eTwo Intake Valve Configurations\u003c\/h2\u003e\n\u003cp\u003eThe intake side is available in two configurations depending on the camshaft being used:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStandard \/ Stock Base Circle\u003c\/strong\u003e — For factory cams and aftermarket camshafts retaining stock-style base-circle geometry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReduced Base Circle \/ Regrind\u003c\/strong\u003e — Provides additional valve-tip height for combinations using reduced-base-circle or reground camshafts, giving the engine builder additional geometry to work with when setting up the valvetrain.\u003c\/p\u003e\n\u003cp\u003eThis allows the valve package to work with a much wider range of Ecotec cylinder-head and camshaft combinations without compromising the design of the valve itself.\u003c\/p\u003e\n\u003ch2\u003eComplete 16-Valve Ecotec Package\u003c\/h2\u003e\n\u003cp\u003eEach package includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e8 BK Racing HF35.6 Performance Intake Valves\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e8 BK Racing Performance Exhaust Valves\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e21-4N stainless-steel construction\u003c\/li\u003e\n\u003cli\u003eFull nitrided treatment\u003c\/li\u003e\n\u003cli\u003eAirflow-focused intake and exhaust geometry\u003c\/li\u003e\n\u003cli\u003eUndercut stems\u003c\/li\u003e\n\u003cli\u003eOEM-style triple keeper grooves\u003c\/li\u003e\n\u003cli\u003eFlat combustion-side valve faces\u003c\/li\u003e\n\u003cli\u003e100% inspected valves\u003c\/li\u003e\n\u003cli\u003eMatched sets\u003c\/li\u003e\n\u003cli\u003eStandard or Reduced Base Circle\/Regrind intake configuration\u003c\/li\u003e\n\u003cli\u003eDeveloped and flow-bench tested with MWR Technologies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDesigned as a Complete Ecotec Valvetrain System\u003c\/h2\u003e\n\u003cp\u003eFor more demanding combinations, pair the BK Racing intake and exhaust valves with our \u003cstrong\u003e83 lb Ecotec Valve Springs, Lightweight Titanium Retainers and Solid Lash Adjusters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eTogether, these components allow builders to address the valve, spring, retainer, and lash-control system as a complete package rather than upgrading one component at a time.\u003c\/p\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eDesigned for compatible \u003cstrong\u003eGM 2.0L, 2.2L and 2.\u003c\/strong\u003e\u003cstrong\u003e4L DOHC Ecotec cylinder heads\u003c\/strong\u003e, including performance and racing applications based around the L61, LAP, LE5, LE9, LSJ, and LNF engine families.\u003c\/p\u003e\n\u003cp\u003eIdeal for:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNaturally aspirated • Turbocharged • Circle track • High-RPM • Performance street • Competition Ecotec builds\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eWhy BK Racing?\u003c\/h2\u003e\n\u003cp\u003eThere were already plenty of Ecotec valves on the market.\u003c\/p\u003e\n\u003cp\u003eOur goal wasn't to make another set.\u003c\/p\u003e\n\u003cp\u003eWe wanted to develop an \u003cstrong\u003eintake and exhaust combination specifically around the Ecotec cylinder head\u003c\/strong\u003e, test the designs, and offer them together as a complete performance valve package.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e16 valves. One complete Ecotec package. Developed for airflow. Built for performance.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eContinue Learning About Ecotec Exhaust Valves\u003c\/h2\u003e\n\u003cp\u003eBuilding the right Ecotec valvetrain involves more than choosing a single valve. Exhaust-valve material, head and stem geometry, valve springs, retainers, lash adjustment and camshaft geometry all work together—especially in sustained high-RPM racing applications. If you're putting together a complete combination, explore the guides below and see how components such as the \u003ca title=\"Exhaust Valves Product Link\" href=\"https:\/\/bkracing.com\/products\/ecotec-exhaust-valves\"\u003e\u003cstrong\u003eBK Racing Ecotec Exhaust Valves\u003c\/strong\u003e\u003c\/a\u003e, \u003ca title=\"83 lb Valve Spring Product Link\" href=\"https:\/\/bkracing.com\/products\/ecotec-83lb-valve-springs?_pos=1\u0026amp;_sid=5f93b5ade\u0026amp;_ss=r\"\u003e\u003cstrong\u003eBK Racing 83 lb Valve Springs\u003c\/strong\u003e\u003c\/a\u003e, \u003ca title=\"Titanium Retainers Product Link\" href=\"https:\/\/bkracing.com\/products\/ecotec-titanium-valve-retainers\"\u003e\u003cstrong\u003eBK Racing Lightweight Titanium Retainers\u003c\/strong\u003e\u003c\/a\u003e and \u003ca title=\"Solid Lifter Options\" href=\"https:\/\/bkracing.com\/search?q=solid+lifters+\u0026amp;options%5Bprefix%5D=last\u0026amp;type=product\"\u003e\u003cstrong\u003eBK Racing Solid Lash Adjusters\u003c\/strong\u003e\u003c\/a\u003e fit into the complete Ecotec valvetrain.\u003c\/p\u003e\n\u003ch3\u003e\u003ca title=\"Stock vs Performance Ecotec Exhaust Valves Blog link\" href=\"https:\/\/bkracing.com\/blogs\/blogs-ecotec-exhaust-airflow\/stock-vs-performance-ecotec-exhaust-valves\"\u003eStock vs Performance Ecotec Exhaust Valves: What Actually Changes?\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003eLearn what really separates an OEM replacement valve from a purpose-built performance exhaust valve, including material, nitriding, backside geometry, stem design, margin and intended operating environment.\u003c\/p\u003e\n\u003ch3\u003e\u003ca title=\"Performance Exhaust Valves Increase CFM Blog Link\" href=\"https:\/\/bkracing.com\/blogs\/blogs-ecotec-exhaust-airflow\/do-performance-ecotec-exhaust-valves-increase-cfm\"\u003eDo Performance Ecotec Exhaust Valves Increase CFM? Our Ecotec Flow-Bench Testing\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003eSee what we learned from back-to-back Ecotec flow-bench testing, including why larger valve diameter didn't automatically produce more airflow and how the finished \u003cstrong\u003eBK Racing Ecotec Exhaust Valve\u003c\/strong\u003e compared with the stock baseline.\u003c\/p\u003e\n\u003ch3\u003e\u003ca title=\"Ecotec Exhaust Valve Size Guide Blog Link\" href=\"https:\/\/bkracing.com\/blogs\/blogs-ecotec-exhaust-airflow\/ecotec-exhaust-valve-size-guide\"\u003eEcotec Exhaust Valve Size Guide: Stock Diameter, Stem Size \u0026amp; Applications\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003eCompare stock and aftermarket Ecotec exhaust-valve head diameters, stem sizes, overall lengths and applications across the L61, LAP, LE5, LE9, LSJ and LNF engines.\u003c\/p\u003e\n\u003ch3\u003e\u003ca title=\"21-4N vs Inconel Blog Link\" href=\"https:\/\/bkracing.com\/blogs\/blogs-ecotec-exhaust-airflow\/21-4n-vs-inconel-ecotec-exhaust-valves\"\u003e21-4N Stainless vs Inconel vs OEM Ecotec Exhaust Valves\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003eUnderstand the differences between OEM valve materials, 21-4N stainless and Inconel—and why the \u003cstrong\u003eBK Racing Ecotec Exhaust Valve\u003c\/strong\u003e uses fully nitrided 21-4N stainless for the naturally aspirated, sustained-RPM racing applications it was developed around.\u003c\/p\u003e\n\u003ch3\u003e\u003ca title=\"Ecotec Exhaust Valve Shape Blog Link\" href=\"https:\/\/bkracing.com\/blogs\/blogs-ecotec-exhaust-airflow\/ecotec-exhaust-valve-shape-geometry\"\u003eWhy Exhaust Valve Shape Matters: Tulip, Back-Cut, Margin \u0026amp; Stem Geometry\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003eLearn how the valve itself becomes part of the airflow path and why tulip shape, back-cut, margin, head thickness and stem geometry can matter just as much as valve-head diameter.\u003c\/p\u003e\n\u003ch3\u003e\u003ca title=\"Stock Ecotec Valves at High RPM Blog Link\" href=\"https:\/\/bkracing.com\/blogs\/blogs-ecotec-exhaust-airflow\/stock-ecotec-valves-high-rpm-limit-valve-float\"\u003eStock Ecotec Exhaust Valves at High RPM: What Are the Limitations?\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003eSee what changes when a production Ecotec valvetrain is subjected to sustained racing RPM and why exhaust valves, \u003ca title=\"83 lb Spring Product Link\" href=\"https:\/\/bkracing.com\/products\/ecotec-83lb-valve-springs?_pos=1\u0026amp;_sid=5f93b5ade\u0026amp;_ss=r\"\u003e\u003cstrong\u003eBK Racing 83 lb Valve Springs\u003c\/strong\u003e\u003c\/a\u003e and lightweight retainers should be considered as parts of the same system.\u003c\/p\u003e\n\u003ch3\u003e\u003ca title=\"Undercut Valve Stems Blog Link\" href=\"https:\/\/bkracing.com\/blogs\/blogs-ecotec-exhaust-airflow\/undercut-valve-stems-ecotec-exhaust-flow\"\u003eUndercut Valve Stems: Can They Improve Ecotec Exhaust Flow?\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003eLearn how reducing the exposed portion of an exhaust-valve stem can decrease obstruction in the port and why the \u003ca title=\"BK Racing Exhaust Valve Product Link\" href=\"https:\/\/bkracing.com\/products\/ecotec-exhaust-valves\"\u003e\u003cstrong\u003eBK Racing Ecotec Exhaust Valve\u003c\/strong\u003e\u003c\/a\u003e uses an undercut stem with a smooth transition into the backside of the valve.\u003c\/p\u003e\n\u003ch3\u003e\u003ca title=\"Ecotec Valve Springs \u0026amp; High RPM Blog Link\" href=\"https:\/\/bkracing.com\/blogs\/blogs-ecotec-exhaust-airflow\/ecotec-valve-springs-high-rpm-valvetrain\"\u003eEcotec Valve Springs, Exhaust Valves \u0026amp; RPM: Building the Valvetrain as a System\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003eGo deeper into the relationship between valve mass, spring pressure, installed height, cam profile, retainers and RPM, including how the \u003ca title=\"83 lb Spring Product Link\" href=\"https:\/\/bkracing.com\/products\/ecotec-83lb-valve-springs?_pos=1\u0026amp;_sid=5f93b5ade\u0026amp;_ss=r\"\u003e\u003cstrong\u003eBK Racing 83 lb Valve Springs\u003c\/strong\u003e\u003c\/a\u003e, \u003ca title=\"BK Racing Ti Retainers Product Link\" href=\"https:\/\/bkracing.com\/products\/ecotec-titanium-valve-retainers?_pos=1\u0026amp;_sid=fcc4dfab4\u0026amp;_ss=r\"\u003e\u003cstrong\u003eBK Racing Lightweight Titanium Retainers\u003c\/strong\u003e\u003c\/a\u003e, performance valves and \u003ca title=\"BK Racing Solid Lifter Product Link\" href=\"https:\/\/bkracing.com\/search?q=solid+lifters\u0026amp;options%5Bprefix%5D=last\u0026amp;type=product\"\u003e\u003cstrong\u003eBK Racing Solid Lash Adjusters\u003c\/strong\u003e\u003c\/a\u003e can be combined into a complete racing valvetrain.\u003c\/p\u003e\n\u003ch3\u003e\u003ca title=\"Valve Stem Height \u0026amp; Valvetrain Geometry Blog Link\" href=\"https:\/\/bkracing.com\/blogs\/blogs-ecotec-exhaust-airflow\/reground-ecotec-cams-valve-stem-height\"\u003eReground Ecotec Cams \u0026amp; Valve Stem Height: Why Geometry Matters\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003eLearn why reducing a camshaft's base circle changes the relationship between the cam, rocker, lash adjuster and valve—and why the extended-tip geometry of the \u003ca title=\"BK Racing Exhaust Valve Product Link\" href=\"https:\/\/bkracing.com\/products\/ecotec-exhaust-valves\"\u003e\u003cstrong\u003eBK Racing Ecotec Exhaust Valve\u003c\/strong\u003e\u003c\/a\u003e was developed with reground-cam combinations in mind.\u003c\/p\u003e\n\u003ch3\u003e\u003ca title=\"Ecotec Exhaust Valves Comparison Blog Link\" href=\"https:\/\/bkracing.com\/blogs\/blogs-ecotec-exhaust-airflow\/ecotec-exhaust-valve-comparison\"\u003eEcotec Exhaust Valve Comparison: OEM vs Ferrea vs Supertech vs BK Racing\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003eCompare OEM, Ferrea, Supertech and \u003ca title=\"BK Racing Exhaust Valve Product Link\" href=\"https:\/\/bkracing.com\/products\/ecotec-exhaust-valves\"\u003e\u003cstrong\u003eBK Racing Ecotec Exhaust Valves\u003c\/strong\u003e\u003c\/a\u003e by dimensions, material, geometry and intended application, including where we have actual back-to-back flow-bench data and where we don't.\u003c\/p\u003e\n\u003ch3\u003e\u003ca title=\"Ecotec Valves Interchangeable Blog Link\" href=\"https:\/\/bkracing.com\/blogs\/blogs-ecotec-exhaust-airflow\/ecotec-exhaust-valve-interchange\"\u003eAre L61, LAP, LE5, LE9, LSJ \u0026amp; LNF Exhaust Valves Interchangeable?\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003eSee which Ecotec engines share basic exhaust-valve architecture, where important differences remain and what should be measured before combining valves, cylinder heads and valvetrain components from different Ecotec generations.\u003c\/p\u003e","brand":"BK Racing","offers":[{"title":"Standard \/ Stock Base Circle","offer_id":50550803202136,"sku":null,"price":499.99,"currency_code":"USD","in_stock":true},{"title":"Reduced Base Circle \/ Regrind","offer_id":50550803234904,"sku":null,"price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/9997\/9864\/files\/IMG_8657.jpg?v=1790635874","url":"https:\/\/bkracing.com\/products\/bk-racing-high-performance-ecotec-intake-exhaust-valve-set","provider":"BK Racing","version":"1.0","type":"link"}