{"product_id":"manley-chevy-lt-1-6-2l-1-590in-head-diameter-pro-flo-severe-duty-exhaust-valves-set-of-8","title":"Manley Chevy LT-1 6.2L 1.590in Head Diameter Pro Flo\/Severe Duty Exhaust Valves (Set of 8)","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e12347-8\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 807298086019\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eManley Chevy LT-1 6.2L 1.590in Head Diameter Pro Flo\/Severe Duty Exhaust Valves (Set of 8) - Fits 2014-2019 Corvette, 2016-2023 Camaro\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eManley Pro Flo Severe Duty Exhaust Valves deliver reliable power for Chevy LT1 6.2L engines in 2014-2019 Corvette Stingray and 2016-2023 Camaro SS models. Crafted from heat-resistant XH-428 Inconel these 1.590 inch head diameter valves handle extreme racing conditions with fatigue resistance. This set of 8 provides direct replacement for stock exhaust valves boosting engine breathing.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eXH-428 Inconel Material:\u003c\/strong\u003e Resists high exhaust temperatures and maintains strength under prolonged high-rpm use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.590in Head Diameter:\u003c\/strong\u003e Exact OEM match ensures drop-in fit and maintains stock valve shrouding for optimal combustion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e11\/32in Stem Diameter:\u003c\/strong\u003e Precision ground at 0.343in for tight guide clearance and reduced wear\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.875in Overall Length:\u003c\/strong\u003e Matches factory specs for correct valve timing lift and installed height\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwirl Polished Finish:\u003c\/strong\u003e Enhances exhaust flow reduces valve bounce and supports higher rev limits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVerify cylinder head valve seats before installation for compatibility\u003c\/li\u003e\n\u003cli\u003ePair with upgraded valve springs rated for LT1 performance levels\u003c\/li\u003e\n\u003cli\u003eHandle valves carefully to avoid nicks on stems or seats\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eRequires three-angle valve job for best sealing and flow\u003c\/li\u003e\n\u003cli\u003eDirect fit no machining needed compatible with stock LT1 heads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2019\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCorvette\u003c\/td\u003e\n\u003ctd\u003eStingray\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016-2023\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCamaro\u003c\/td\u003e\n\u003ctd\u003eSS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose Manley?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDecades of experience supplying valves to professional race teams\u003c\/li\u003e\n\u003cli\u003eAdvanced alloys like XH-428 proven in NHRA and drag racing\u003c\/li\u003e\n\u003cli\u003eCNC machined in USA for exact tolerances and consistent quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will these fit my 2016 Camaro SS LT1?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes fits all 2016-2023 Chevrolet Camaro SS with 6.2L LT1 V8 engine VIN U.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What makes the XH-428 material suitable for exhaust valves?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e XH-428 Inconel alloy offers superior heat corrosion resistance and tensile strength for severe duty exhaust applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the Manley warranty on these valves?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Lifetime warranty against manufacturing defects when installed by certified engine builder.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS Ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Secure Manley box with foam inserts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":40530579849295,"sku":"MAN12347-8","price":301.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/manley-chevy-lt-1-6_2l-1_590in-head-diameter-pro-flosevere-duty-exhaust-valves-set-of-8-manley-performance.jpg?v=1772547387","url":"https:\/\/www.blackopsautoworks.com\/products\/manley-chevy-lt-1-6-2l-1-590in-head-diameter-pro-flo-severe-duty-exhaust-valves-set-of-8","provider":"Black Ops Auto Works","version":"1.0","type":"link"}