{"product_id":"star-racing-p38-lightning-615-twin-cam-camshaft-615-lift","title":"STAR Racing P38 Lightning 615 Twin Cam Camshaft - .615 Lift","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cu\u003e\u003cstrong\u003eStar P38 Lightning 615 Twin Cam Camshaft — .615 Lift \u003c\/strong\u003e\u003c\/u\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThe next step up from the legendary Torkstar 577 — higher lift, broader application, and built for Twin Cam engines that are ready to perform. \u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003e\u003cstrong\u003ePart Description \u003c\/strong\u003e\u003c\/u\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eStar P38 Lightning\u003c\/strong\u003e is the natural progression for riders who want a step up from the Torkstar 577 and are ready for more. Designed for chain-drive 2007-and-up Twin Cam engines, the P38 delivers .615\" lift across a wide range of displacement combinations — from 103 cubic inch all the way up to 117 cubic inch piston kit builds. Whether you're running a mild street build or a serious big-bore kit, the P38 Lightning is engineered to extract strong, reliable performance from your Twin Cam engine. Before installation, verify that your existing valve springs are rated to handle up to .620\" lift — spring capability is the key installation consideration for this cam. Recommended install with \u003ca href=\"https:\/\/ajspartsdepot.com\/products\/star-racing-655-lift-twin-cam-valve-spring-kit-7mm\" target=\"_blank\"\u003eStar 655 Lift Spring Kit (\u003cstrong\u003eTC20-20350)\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e**Please note that we cannot ship cams to California.** \u003c\/p\u003e\n\u003ch2 class=\"gmail-s__5DGWeQ gmail-oHJSrAT---typography-11-runningText gmail-oHJSrAT---priority-7-primary gmail-_HOcyB gmail-x4nptw gmail-sxbtulv gmail-ftb6e2\"\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"gmail-rah-static gmail-rah-static--height-auto\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"gmail-ulKuLk gmail-QfrfFD gmail-cell\"\u003e\n\u003cdiv class=\"gmail-zp8uy2 gmail-veCD9x\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNext step up from the Torkstar 577 — \u003c\/strong\u003emore lift, broader displacement range, higher performance ceiling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e.615 lift — \u003c\/strong\u003esignificant airflow gains over stock and mild performance cams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad displacement compatibility — \u003c\/strong\u003escales well from street builds to serious big-bore combinations\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eChain-drive design — fits 2007-and-up Twin Cam engines\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCompatible with 103, 107, 110, 113, and 117 cubic inch piston kit builds\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"gmail-s__5DGWeQ gmail-oHJSrAT---typography-11-runningText gmail-oHJSrAT---priority-7-primary gmail-_HOcyB gmail-x4nptw gmail-sxbtulv gmail-ftb6e2\"\u003eQuick Specs\u003c\/h2\u003e\n\u003cdiv class=\"gmail-rah-static gmail-rah-static--height-auto\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"gmail-ulKuLk gmail-QfrfFD gmail-cell\"\u003e\n\u003cdiv class=\"gmail-zp8uy2 gmail-veCD9x\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd\u003e.615\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIVC\u003c\/td\u003e\n\u003ctd\u003e38°, 235 x 255 duration  \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTDC Lift\u003c\/td\u003e\n\u003ctd\u003e.171 x .186\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRPM Range\u003c\/td\u003e\n\u003ctd\u003e2,500 - 5,500 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"gmail-s__5DGWeQ gmail-oHJSrAT---typography-11-runningText gmail-oHJSrAT---priority-7-primary gmail-_HOcyB gmail-x4nptw gmail-sxbtulv gmail-ftb6e2\"\u003ePerformance and Ride Feel\u003c\/h2\u003e\n\u003cdiv class=\"gmail-rah-static gmail-rah-static--height-auto\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"gmail-ulKuLk gmail-QfrfFD gmail-cell\"\u003e\n\u003cdiv class=\"gmail-zp8uy2 gmail-veCD9x\"\u003e\n\u003cul\u003e\n\u003cli\u003eVery reliable performance with excellent rideability\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGreat low to mid-range RPM, torque and horsepower\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSounds like a true Harley should\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBest For: Street \u0026amp; Mid-range performance\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"gmail-s__5DGWeQ gmail-oHJSrAT---typography-11-runningText gmail-oHJSrAT---priority-7-primary gmail-_HOcyB gmail-x4nptw gmail-sxbtulv gmail-ftb6e2\"\u003eFitment and Install Notes\u003c\/h2\u003e\n\u003cdiv class=\"gmail-rah-static gmail-rah-static--height-auto\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"gmail-ulKuLk gmail-QfrfFD gmail-cell\"\u003e\n\u003cdiv class=\"gmail-zp8uy2 gmail-veCD9x\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEngine\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eYears\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eValve Springs\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eLifter Guides\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTC 103 - 117 cubic inch engines\u003c\/th\u003e\n\u003ctd\u003e2007+\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/ajspartsdepot.com\/products\/star-racing-655-lift-twin-cam-valve-spring-kit-7mm\" target=\"_blank\" rel=\"noopener\"\u003eTC20-20350\u003c\/a\u003e\u003ca href=\"https:\/\/www.starracing.com\/product-page\/star-655-lift-twin-cam-valve-spring-kit\" target=\"_blank\"\u003e\u003c\/a\u003e recommended\u003c\/td\u003e\n\u003ctd\u003eStock \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpring verification required\u003c\/strong\u003e — existing valve springs must be rated to handle up to .620 lift before installation. Upgrade springs if current springs do not meet this requirement. Star recommends \u003ca href=\"https:\/\/ajspartsdepot.com\/products\/star-racing-655-lift-twin-cam-valve-spring-kit-7mm\"\u003e\u003cstrong\u003eTC20-20350\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePush Rods\u003c\/strong\u003e and \u003cstrong\u003eLifters\u003c\/strong\u003e can be stock. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExhaust pairing matters\u003c\/strong\u003e: Star Cams will perform with all pipe configurations, but exhaust selection has a meaningful impact on results. Short exhaust systems create sound wave differentials that negatively affect low-RPM tune quality — a condition that cannot be fully corrected through tuning alone. For the smoothest low-end torque curve, a long 2-into-1 exhaust is strongly recommended. Trusted options include \u003cstrong\u003eD\u0026amp;D\u003c\/strong\u003e, \u003cstrong\u003eFuel Moto\u003c\/strong\u003e, \u003cstrong\u003eBassani\u003c\/strong\u003e, \u003cstrong\u003eThunderHeader\u003c\/strong\u003e, and \u003cstrong\u003eKrome Werks\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProfessional tuning recommended\u003c\/strong\u003e for best results. \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"STAR RACING","offers":[{"title":"Default Title","offer_id":62997069496691,"sku":"TC615C","price":439.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0911\/8220\/3251\/files\/2dc5f7_aef2f2dc20f7433f91f9070b865421e1_mv2.avif?v=1781733549","url":"https:\/\/ajspartsdepot.com\/products\/star-racing-p38-lightning-615-twin-cam-camshaft-615-lift","provider":"AJ's Parts Depot","version":"1.0","type":"link"}