{"product_id":"5-7-hemi-vvt-stage-4-camshaft","title":"5.7 HEMI VVT Stage 4 Camshaft","description":"The Brian Tooley Racing 5.7 HEMI VVT Stage 4 Camshaft is engineered for Gen III 2009+ Hemi applications, offering a significant performance upgrade for naturally aspirated engines. This camshaft, with its 224\/24X intake\/exhaust duration at .050 lift and .587\/.586 lift, is designed to deliver an aggressive sound and an expanded RPM operating range from 2300 to 7400 RPM.\n\nBrian Tooley Racing meticulously designs and develops these lobes in-house, balancing performance with stability. Rigorous spintron and dyno testing validate its performance and durability. Expect gains of approximately 85 horsepower and 12 ft-lbs of torque with an additional 1900 RPM of usable operating range, particularly when paired with an aftermarket torque converter. Dyno tests on a stock 5.7L Hemi showed peak gains of 83 HP and 72 lb\/ft at 6000 RPM, with the camshaft continuing to pull strong past 7100 RPM.\n\nInstallation of this camshaft requires specific components and considerations. A VVT lockout, BTR-VVT-HEMI-LO, is included with the camshaft. It is recommended to use BTR aftermarket spring kits (SK017, SK017\/TS, or SP021-16) due to the high valve lift and increased RPM potential. Non-MDS lifters or an MDS conversion are also required. For optimal performance, a proper calibration is essential, and the use of an aftermarket torque converter is recommended.","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":52688018178360,"sku":"BTR-57HEMIVVTSTG4","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/664198078.jpg?v=1784888884","url":"https:\/\/store.motormia.co\/products\/5-7-hemi-vvt-stage-4-camshaft","provider":"MOTORMIA","version":"1.0","type":"link"}