{"product_id":"comp-cams-k31-600-9-thumpr-227-241hydraulic-roller-evolution-lifter-k-kit-ford-221-302","title":"COMP Cams K31-600-9 - Thumpr 227\/241Hydraulic Roller \u0026 Evolution Lifter K-Kit, Ford 221-302","description":"\u003cp\u003eCOMP Cams K31-600-9 - Thumpr 227\/241Hydraulic Roller \u0026amp; Evolution Lifter K-Kit, Ford 221-302\u003c\/p\u003e\u003cp\u003eThumpr 227\/241Hydraulic Roller \u0026amp; Evolution Lifter K-Kit, Ford 221-302\u003c\/p\u003e\u003cp\u003eThe COMP Cams Thumpr camshafts delivers signature lopey idle, strong low-mid RPM torque, and improved horsepower. Ideal for street\/strip builds looking for aggressive sound, throttle response, and classic muscle performance.\u003c\/p\u003e\u003cp\u003eThe COMP Cams Thumpr camshaft delivers a signature lopey idle, strong low- to mid-RPM torque, and improved horsepower, making it ideal for street\/strip builds seeking aggressive sound, throttle response, and classic muscle performance. Designed for high-performance street applications, it provides an unmistakable idle quality while pairing exceptionally well with popular upgrades like the Edelbrock RPM Air Gap intake manifold and TCI Saturday Night Special torque converter. Built withfull-size base circles for added durability, this cam works seamlessly with COMP Cams Evolution hydraulic roller tappets and eliminates the need for dog bones and lifter retainers—components never intended for pre-1985 applications. This camshaft supersedes part number K31-600-8, delivering proven performance and simplified valvetrain compatibility in one upgraded design.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFeatures full-size base circles, works seamlessly with our Comp Cams Evolution hydraulic roller tappets.\u003c\/li\u003e\n\u003cli\u003eEliminates the need for dog bones and lifter retainers, which were never intended for use in pre-1985 applications.\u003c\/li\u003e\n\u003cli\u003eSupersedes K31-600-8\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\u003cdiv\u003e\n\u003cstrong\u003eCross sell \/ Upsell Part Numbers\u003c\/strong\u003e: \u003cspan\u003e89311-16, 1431-16, 431M, 26986-16\u003c\/span\u003e\n\u003c\/div\u003e\u003c\/div\u003e","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":49817367511178,"sku":"COMP-K31-600-9","price":1507.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/0619\/2778\/files\/0_c_img_k31-493-9_v1_normalized_9100ddb1-5596-44bc-bff1-4f5397a5f228.jpg?v=1785410580","url":"https:\/\/www.onlyinstock.com\/products\/comp-cams-k31-600-9-thumpr-227-241hydraulic-roller-evolution-lifter-k-kit-ford-221-302","provider":"Only In Stock","version":"1.0","type":"link"}