{"product_id":"manley-chevrolet-big-block-exhaust-valve-kit-1-880in-head-dia-5-422in-o-a-length-0-3715in-stem","title":"Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O\/A Length, 0.3715in Stem - 11509-8","description":"\u003cp\u003eManley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eStainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.\u003c\/li\u003e\n\u003cli\u003eChrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.\u003c\/li\u003e\n\u003cli\u003eSwirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.\u003c\/li\u003e\n\u003cli\u003eVariety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine's specific requirements.\u003c\/li\u003e\n\u003cli\u003eRecommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManley Valve\u003c\/li\u003e\n\u003cli\u003eExhaust, Valve-BBC R\/M 1.880\u003c\/li\u003e\n\u003cli\u003eProduct Market: Domestic\u003c\/li\u003e\n\u003cli\u003eHead Diameter: 1.880\u003c\/li\u003e\n\u003cli\u003eValve Head Diameter: 1.880\u003c\/li\u003e\n\u003cli\u003eStem Diameter: 0.3715\u003c\/li\u003e\n\u003cli\u003eValve Stem Diameter: 0.3715\u003c\/li\u003e\n\u003cli\u003eO\/A Length: 5.422\u003c\/li\u003e\n\u003cli\u003eValve Length: 5.422\u003c\/li\u003e\n\u003cli\u003eValve Tip Length: 0.250\u003c\/li\u003e\n\u003cli\u003eTip Length: 0.250\u003c\/li\u003e\n\u003cli\u003eMargin Width: 0.075\u003c\/li\u003e\n\u003cli\u003eSeat Width: 0.100\u003c\/li\u003e\n\u003cli\u003eTop of Head: 9 Degree Dish\u003c\/li\u003e\n\u003cli\u003eValve Head Shape: 9 Degree Dish\u003c\/li\u003e\n\u003cli\u003eUnderhead Angle: 15.00\u003c\/li\u003e\n\u003cli\u003eUnderhead Radius: 1\/2\u003c\/li\u003e\n\u003cli\u003eValve Series: Race Series\u003c\/li\u003e\n\u003cli\u003eValve Sub-Series: Race Master\u003c\/li\u003e\n\u003cli\u003eValve Material: Stainless Steel\u003c\/li\u003e\n\u003cli\u003eValve Type: Exhaust\u003c\/li\u003e\n\u003cli\u003eProduct Type: Engine Exhaust Valve Kit\u003c\/li\u003e\n\u003cli\u003eValve Quantity: 8\u003c\/li\u003e\n\u003cli\u003eEngine Valve Quantity: 8\u003c\/li\u003e\n\u003cli\u003eIndustry: Automotive\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":52480972390763,"sku":"MAN11509-8","price":264.17,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/9690\/4998\/files\/public_e370f2c7-995c-4c00-b1ad-ca900cf3b3d8.jpg?v=1778203367","url":"https:\/\/www.raptorracing.ca\/products\/manley-chevrolet-big-block-exhaust-valve-kit-1-880in-head-dia-5-422in-o-a-length-0-3715in-stem","provider":"Raptor Racing","version":"1.0","type":"link"}