{"product_id":"forged-4340-steel-crankshaft-4-140-stroke","title":"Forged 4340 Steel Crankshaft, 4.140\" Stroke","description":"The Eagle Specialty Products 4.140\" stroke crankshaft is constructed from forged 4340 steel, ensuring high strength and durability for demanding applications. This internally balanced crankshaft is designed for Ford Big Block 429\/460 engines and features .125\" fillet radii for enhanced strength, requiring chamfered or narrowed bearings. It undergoes a nitrided surface treatment and is micropolished to less than 2 RA for superior performance.\n\nKey specifications include a 4.140\" stroke, 2.200\" rod journals with a 2.000\" width, and 3.000\" main journals. The rear seal diameter is 3.141\", the snout diameter is 1.373\", and it accepts 6 flywheel bolts. The pilot bore diameter measures 1.850\" with a step down to 1.375\". The typical weight of this crankshaft is 80 lbs.\n\nImportant note: This crankshaft must be balanced to match your specific rods and pistons. Additionally, all items from Eagle Specialty Products are not for use in pollution-controlled vehicles.","brand":"Eagle Specialty Products","offers":[{"title":"Default Title","offer_id":52872902574392,"sku":"EAG446041402200","price":1159.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/store.motormia.co\/products\/forged-4340-steel-crankshaft-4-140-stroke","provider":"MOTORMIA","version":"1.0","type":"link"}