{"product_id":"btr-truck-norris-camshaft-gm-ls-series-truck-trucknorris","title":"BTR Truck Norris Camshaft | GM LS-Series Truck, .552\/.552 Lift | TRUCKNORRIS","description":"\u003cp\u003eThe Truck Norris is our flagship truck cam for GM LS-series (Gen III\/IV) 1999-2013 Silverado and Sierra applications, delivering a stronger power and torque curve everywhere compared to our legendary V2 truck cams while keeping a factory-friendly idle.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePart number: TRUCKNORRIS\u003c\/li\u003e\n\u003cli\u003eApplication: GM LS-series truck (Gen III\/IV)\u003c\/li\u003e\n\u003cli\u003eCamshaft style: Hydraulic roller\u003c\/li\u003e\n\u003cli\u003eLift (int\/exh): 0.552 in \/ 0.552 in\u003c\/li\u003e\n\u003cli\u003eIntake duration: 212\u003c\/li\u003e\n\u003cli\u003eLobe separation angle (LSA): 107\u003c\/li\u003e\n\u003cli\u003eSold: Each\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat does the BTR Truck Norris cam fit?\u003c\/h5\u003e\u003cp\u003eGM LS-series (Gen III\/IV) trucks, including 1999-2013 Silverado and Sierra.\u003c\/p\u003e\u003ch5\u003eWhat's the lift and duration?\u003c\/h5\u003e\u003cp\u003e0.552 in intake \/ 0.552 in exhaust lift, 212 intake duration, 107 LSA.\u003c\/p\u003e\u003ch5\u003eIs there a no-springs-required version?\u003c\/h5\u003e\u003cp\u003eYes, the TRUCKNORRISNSR is designed to run on factory valve springs.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the BTR Truck Norris cam fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"GM LS-series (Gen III\/IV) trucks, including 1999-2013 Silverado and Sierra.\"}}, {\"@type\": \"Question\", \"name\": \"What's the lift and duration?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"0.552 in intake \/ 0.552 in exhaust lift, 212 intake duration, 107 LSA.\"}}, {\"@type\": \"Question\", \"name\": \"Is there a no-springs-required version?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the TRUCKNORRISNSR is designed to run on factory valve springs.\"}}]}\u003c\/script\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":42038298968112,"sku":"GNBP_TRUCKNORRIS","price":409.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/BTRTRUCKNORRIS.jpg?v=1747497756","url":"https:\/\/berryperformancesales.com\/products\/btr-truck-norris-camshaft-gm-ls-series-truck-trucknorris","provider":"Berry Performance Sales","version":"1.0","type":"link"}