{"product_id":"manley-performance-race-series-small-block-exhaust-valves-for-chevy-ls-3-l-99-l-92-head-set-of-8","title":"Manley Performance Race Series Small Block Exhaust Valves for Chevy LS-3\/L-99 (L-92 Head) – Set of 8","description":"Manley?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\nHead Diameter: 1.590 in. - Stem Diameter: 0.3136 in. - O\/A : 4.923 in.\nManley Valve - Exhaust, Valve-L-92 R\/M 1.590.\n\u003cul\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  \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\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\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\u003eChrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUpgrade your racing engine with the Manley Performance Race Series Small Block Exhaust Valves designed specifically for Chevy LS-3 and L-99 engines with L-92 heads. Crafted from high-quality stainless steel, these valves are engineered to withstand demanding racing conditions while maintaining optimal performance. Their swirl-polished under-head areas and fully machined combustion faces promote improved airflow and combustion efficiency, essential for maximizing horsepower and torque at high RPMs. Featuring chrome stems and hard tips, these valves offer enhanced durability and resistance to wear, making them a reliable choice for competitive racing environments. Recommended for alcohol engines, these exhaust valves are ideal for bracket, drag, and oval track racers operating under 8,000 RPM, ensuring consistent performance during intense racing sessions. The set includes eight valves with a head diameter of 1.590 inches and stem diameter of 0.3136 inches, fitting a range of GM trucks and SUVs such as Hummer H2, Cadillac Escalade, and GMC Yukon from 2007 to 2008. Whether you're rebuilding or upgrading your engine, these Race Master exhaust valves provide the durability, airflow optimization, and high-performance characteristics necessary to achieve top racing results.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDesigned for racing applications up to 8,000 RPM, ensuring high-performance durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eConstructed from high-quality stainless steel for long-lasting wear resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSwirl polished under-head areas and fully machined combustion faces optimize airflow and combustion efficiency\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eChrome stems and hard tips enhance longevity and wear resistance under demanding conditions\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRecommended for alcohol engines, ideal for bracket, drag, and oval track racing\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2007 Cadillac Escalade Base\u003cbr\u003e\n2007 Cadillac Escalade ESV Base\u003cbr\u003e\n2007 Cadillac Escalade EXT Base\u003cbr\u003e\n2007 GMC Yukon Denali\u003cbr\u003e\n2007 GMC Yukon XL 1500 Denali\u003cbr\u003e\n2008 Cadillac Escalade Base\u003cbr\u003e\n2008 Cadillac Escalade ESV Base\u003cbr\u003e\n2008 Cadillac Escalade ESV Platinum\u003cbr\u003e\n2008 Cadillac Escalade EXT Base\u003cbr\u003e\n2008 GMC Yukon Denali\u003cbr\u003e\n2008 GMC Yukon XL 1500 Denali\u003cbr\u003e\n2008 Hummer H2 Base\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbdoy\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbdoy\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":53605724979473,"sku":"11621-8","price":215.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/3830\/0689\/files\/8abcc06748efc38771788b16aecbc122_2f119cc3-853a-43ed-aed2-7fd08d271ebf.jpg?v=1780001813","url":"https:\/\/shoprenegade.com\/products\/manley-performance-race-series-small-block-exhaust-valves-for-chevy-ls-3-l-99-l-92-head-set-of-8","provider":"Renegade Speed by Renegade Racing \u0026 Performance","version":"1.0","type":"link"}