{"product_id":"callies-crankshaft-ultra-billet-4-000-stroke-dry-sump-ls7-58x-reluctor-awo-31-ub","title":"Callies Crankshaft - Ultra Billet - 4.000\" Stroke - Dry Sump LS7 - 58X Reluctor","description":"\u003cp\u003eCALLIES CRANKSHAFT - ULTRA BILLET - 4.000\" STROKE - DRY SUMP LS7 - 58X RELUCTOR - AWO-31@-UB\u003cbr\u003e\nCallies Ultra billets are machined from Premium Grade Timken alloy steel. This high quality steel creates a level of toughness that is unmatched in the crankshaft industry. Each Ultra billet crankshaft is uniquely machined with Ultra-Shed counterweight profiles. The Ultra-Shed profile gently moves oil away from the oncoming counterweight while the directional trailing edge directs oil away from the oncoming rod journal. Aero-Shed Super Finish is then used to give you a crankshaft that is totally stress-riser free and incredibly aero efficient. When the Ultra-Shed and Aero-Shed processes are combined, the result is a crankshaft with the lowest coefficient of drag in the industry.\u003cbr\u003e\nFeatures:\u003cbr\u003e\nStroke Range: 2.600 in – 4.600 in.\u003cbr\u003e\nLS1, LS7, LT1 posts are available\u003cbr\u003e\n6, 8, or 9 bolt pattern flange options\u003cbr\u003e\nRod Sizes: 1.850, 1.888, 2.000, 2.100, 2.200 w\/sbc width, 2.200 BBC width\u003cbr\u003e\nMain Journal Sizes: Standard LS, Iron Duke, Ford Cleveland 351\u003cbr\u003e\n8 or 6 counterweight designs available\u003cbr\u003e\nSold complete w\/no drill balance\u003cbr\u003e\nAero efficient Ultra-Shed counterweight profiling is standard\u003cbr\u003e\nAero-Shed super finishing included with all Ultra Billets\u003cbr\u003e\nAll Ultra LS billets are produced from Timken 4330 alloy steel\u003c\/p\u003e","brand":"Callies","offers":[{"title":"Default Title","offer_id":52041507275046,"sku":"AWO-31@-UB","price":5076.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/1666\/1542\/files\/m2_5to-31ul_68_1.jpg?v=1770810952","url":"https:\/\/billysspeedshop.com\/fr\/products\/callies-crankshaft-ultra-billet-4-000-stroke-dry-sump-ls7-58x-reluctor-awo-31-ub","provider":"Billys Speed Shop","version":"1.0","type":"link"}