{"product_id":"4-000-inch-stroke-forged-4340-steel-crankshaft-1","title":"4.000-Inch Stroke Forged 4340 Steel Crankshaft","description":"The Eagle CRS-434640006100 is a forged 4340 steel crankshaft engineered for high-performance LS engine builds. With a 4.000-inch stroke and internal balancing, this crankshaft is designed to handle demanding applications.\n\nConstructed from Eagle Specialty Products' signature non-twist forged 4340 steel, this crankshaft is built for durability and performance. It undergoes a rigorous multi-stage heat-treatment process, followed by stress-relieving and shot-peening. The design incorporates cross-drilled and chamfered oil holes for superior lubrication and .125-inch radius fillets on the rod and main journals to increase strength. Furthermore, the journals are precision-ground and micro-polished to a fine finish of less than 5 R.A. A target bob weight of +\/- 2 percent is maintained to significantly reduce balancing time during assembly.\n\nKey specifications include a 4.000-inch engine stroke, forged 4340 steel material, and internal engine balance. It features a 24-tooth reluctor wheel for electronic timing signals and a standard crankshaft snout style. The rod journal diameter measures 2.100 inches, and the main journal diameter is 2.559 inches. This crankshaft requires narrow bearings and uses a 1-piece rear main seal. It is compatible with LS-series engines, including LS1, LS2, LS3\/L92\/L99, LS4, LS6, LQ4\/LQ9, L76, Vortec 4800, and Vortec 5300 families.","brand":"Eagle","offers":[{"title":"Default Title","offer_id":52687894053176,"sku":"CRS-434640006100","price":994.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/663170126.webp?v=1784887131","url":"https:\/\/store.motormia.co\/products\/4-000-inch-stroke-forged-4340-steel-crankshaft-1","provider":"MOTORMIA","version":"1.0","type":"link"}