{"product_id":"for-big-block-chevrolet-engines","title":"For Big Block Chevrolet engines","description":"These kits were specifically designed to provide a \"plug-\u0026amp;-play\" cam position signal to Holley EFI systems, although they may be used with any EFI system which can read a digital, square-wave input cam signal. They are intended for use with Big Block Chevy engines with a +.400\" raised cam height and (Jesel or similar) external, dry timing-belt, cam drive systems.","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":51750170100031,"sku":"GVMR_556-120","price":377.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/2041\/6831\/files\/556-120_01.jpg?v=1769343569","url":"https:\/\/smgspeed.com\/products\/for-big-block-chevrolet-engines","provider":"SMGspeed","version":"1.0","type":"link"}