{"product_id":"6-71-roots-style-supercharger-kit-polished","title":"6-71 Roots-Style Supercharger Kit, Polished","description":"The Speedmaster 6-71 Roots-style supercharger kit is engineered for Big Block Chevy engines (396\/402\/427\/454\/496\/502). This comprehensive, bolt-on package provides streetable, instant-throttle boost, capable of adding 45-55% more horsepower. The kit includes a polished 6-71 Roots-style blower, an aluminum supercharger intake manifold, and a dual 4-barrel carburetor adapter plate designed to accept typical 600-850 cfm carburetors.\n\nDrive components are included, such as the supercharger snout with coupler, 50T\/55T Gilmer upper and lower pulleys, a 3-inch Gilmer-style drive belt, an idler pulley with bracket assembly, and a V-belt accessory drive pulley. Gaskets for the supercharger to intake manifold and carburetor plate are also supplied. The supercharger itself features a polished aluminum case with precision-engineered, double-pinned three-lobe rotors that are timed and clearanced for optimal performance. The kit ships with 50T\/55T pulleys, offering a popular street range, with additional pulley sizes available separately for adjusting overdrive. This kit is intended for racing applications only and is not for street use.","brand":"Speedmaster","offers":[{"title":"Default Title","offer_id":52663776805176,"sku":"PCE460.1010","price":4039.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687712929.jpg?v=1784329518","url":"https:\/\/store.motormia.co\/products\/6-71-roots-style-supercharger-kit-polished","provider":"MOTORMIA","version":"1.0","type":"link"}