{"product_id":"magnum-roller-rocker-arms-for-ford-3-8-stud-1-6-ratio-1","title":"Magnum Roller Rocker Arms for Ford; 3\/8\" Stud, 1.6 Ratio","description":"\u003cp\u003e\u003cspan\u003eThese Magnum Roller Rocker Arms for Ford V8 289-351W (Rail Type) 1968-89 Applications are the ultimate street Rocker. With a 3\/8\" Stud diameter and 1.6 ratio, they are designed for Serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed from 8620 chromemoly Steel, which is a superior material that will not flex and assures maximum lift. Their Roller tip reduces friction, while stiff design and superior ratio accuracy yield more effective valve lift. With a 15 to 30 horsepower increase over other Rocker arms, Magnum Roller Rockers are perfect for performance Applications with less than 350 lbs. open spring pressure. Don't accept inferior products or cheap knock-offs, look for the COMP Cams logo stamped into the underside of every Magnum Rocker.\u003c\/span\u003e\u003c\/p\u003e","brand":"comp cams","offers":[{"title":"1431-8","offer_id":47807485739230,"sku":null,"price":116.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/2141\/7694\/files\/1431-8_web.jpg?v=1767903818","url":"https:\/\/harringtonspeformanceparts.com\/products\/magnum-roller-rocker-arms-for-ford-3-8-stud-1-6-ratio-1","provider":"Harrington's Performace Parts","version":"1.0","type":"link"}