{"product_id":"manley-26362134ks-gm-ls-series-660in-max-lift-valve-spring-and-retainer-kit","title":"Manley 26362134KS - GM LS Series .660in Max Lift Valve Spring and Retainer Kit","description":"\u003cp\u003eManley 26362134KS - GM LS Series .660in Max Lift Valve Spring and Retainer Kit\u003c\/p\u003e\u003cp\u003eValve Spring Kit - Dual Spring - 379 lb\/in Spring Rate - 1.100 in Coil Bind - 1.295 in OD - Chromoly Retainer - GM LS-Series - Kit\u003c\/p\u003e\u003cp\u003eMax Lift: 0.660\" - 7° Steel Retainer (+.050\") - I.D. Spring Locator (.505\") - 7° Machined Valve Lock - Viton Valve Stem Seals\u003c\/p\u003e\u003cp\u003eManley Performance LS \u0026amp; LT NexTek? valve spring kits take the guess work out of making your valvetrain race-ready. Engineered for maximum durability, stability, and precision in high-performance and racing applications, these chrome-silicon alloy springs provide exceptional fatigue resistance and high-tensile strength, ensuring consistent valve control at extreme RPMs. Save time and money with these all-inclusive kits, featuring premium springs, retainers, I.D. locators, locks, and Viton? seals.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eManley LS and LT Valve Spring Kits provide a complete, engineered solution, ensuring seamless compatibility for higher-lift camshafts and eliminating concerns with mismatched components.\u003c\/li\u003e\n\u003cli\u003eNexTek  Valve Springs are manufactured from \"super clean\" Hi-Tensile Chrome Silicon steel and shot-peened to MIL spec for maximum fatigue life. Spring No. 221436-16\u003c\/li\u003e\n\u003cli\u003e7  Steel Retainer CNC machined to exacting tolerances and made of thru-hardened 4140 chromoly. Retainer No. 23621-16 (+.050\" Installed Height)\u003c\/li\u003e\n\u003cli\u003eI.D. Valve Spring Locator is CNC machined, heat treated, and black oxide finished. Locator No. 42334-16 (.505\" ID)\u003c\/li\u003e\n\u003cli\u003e7  Machined Valve Locks use the highest quality steel alloy and are heat treated and black oxide finished. For 8mm (.3135\") valve stem. Lock No. 13098-16\u003c\/li\u003e\n\u003cli\u003eViton Valve Stem Seals offer exceptional resistance to heat, chemicals, and oils. Seal No. 24042-16\u003c\/li\u003e\n\u003cli\u003eNote: Max. lift figures above may vary depending upon the cylinder head and installed height.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: \u003cspan\u003e93\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: \u003cspan\u003eValve Spring Kit\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Outer Diameter\u003c\/strong\u003e: \u003cspan\u003e1.295\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Inner Diameter\u003c\/strong\u003e: \u003cspan\u003e.676\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Quantity\u003c\/strong\u003e: \u003cspan\u003e16\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Series\u003c\/strong\u003e: \u003cspan\u003eNexTek?\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Type\u003c\/strong\u003e: \u003cspan\u003eDouble Without Damper\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Coil Bind Height\u003c\/strong\u003e: \u003cspan\u003e1.100\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Spring Rate\u003c\/strong\u003e: \u003cspan\u003e379\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Lift - Maximum\u003c\/strong\u003e: \u003cspan\u003e.660\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eInstalled Pressure and Height\u003c\/strong\u003e: \u003cspan\u003e155 @ 1.810\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eOpen Pressure and Height\u003c\/strong\u003e: \u003cspan\u003e405 @ 1.150\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eValve Lock Angle\u003c\/strong\u003e: \u003cspan\u003e7\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: \u003cspan\u003eFully Polished\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEngine Type\u003c\/strong\u003e: \u003cspan\u003eICE\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMake\u003c\/strong\u003e: \u003cspan\u003eChevrolet\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEngine\u003c\/strong\u003e: \u003cspan\u003eLS\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Manley","offers":[{"title":"Default Title","offer_id":49937792631062,"sku":"BBPB-26362134KS","price":381.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0930\/0878\/9782\/files\/0_26362134ks---locator_2000x2000_normalized.jpg?v=1776827610","url":"https:\/\/www.cspracing.com\/products\/manley-26362134ks-gm-ls-series-660in-max-lift-valve-spring-and-retainer-kit","provider":"Complete Street Performance","version":"1.0","type":"link"}