{"product_id":"comp-cams-gm-603-604-0-570in-lift-1-077-1-282-od-beehive-hustler-valve-spring-kit","title":"COMP Cams GM 603\/604 0.570in Lift 1.077\/1.282 OD Beehive Hustler Valve Spring Kit","description":"\u003cp\u003eCOMP Cams Hustler Valve Springs are an improved version of the popular GM LS6 \"blue\" valve spring. They are based on popular GM part #12499224 and #12565313 LS6 springs but with 4% higher seat and open loads for better dynamic control, as well as an extra .020\" of lift capability. They are an excellent performance upgrade in GM 603\/604 and CT525 LS crate Race Applications with tight rules packages.\u003c\/p\u003e\u003ca href=\"https:\/\/d32vzsop7y1h3k.cloudfront.net\/a023d18c656421fe9edb36f16f420257.PDF\"\u003eCatalog\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/d32vzsop7y1h3k.cloudfront.net\/8a0c0c4bac68d143c077f3d274494faf.PDF\"\u003eUser 1\u003c\/a\u003e\u003cbr\u003e","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":46354384486627,"sku":"CCAH604-16","price":356.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/6607\/9459\/files\/5ca2387d72ac2dd0cbb9fa282fd33fc4L.jpg?v=1747019802","url":"https:\/\/shop.middletonmotorsports.net\/products\/comp-cams-gm-603-604-0-570in-lift-1-077-1-282-od-beehive-hustler-valve-spring-kit","provider":"MM Parts","version":"1.0","type":"link"}