{"product_id":"callies-durastar-duramax-crankshaft","title":"Callies Compstar Durastar Un-balanced Duramax Crankshaft","description":"\u003cp\u003eCallies Durastar crankshafts are designed to be substantially stronger than OEM shafts currently found in GM’s popular Duramax diesel.  This improvement is the result of substantially stronger steel, considerably deeper nitride layer and unique machining features. Durastar crankshafts are intended to be externally balanced with stock damper and flywheel configurations. Unlike the LB7 stock crank, Callies modified the counterweights on this Durastar Crank to be able to clear and fit in all years with stock rods and pistons. \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConservatively rated for 1200HP but have seen trucks well over the 1500HP mark\u003c\/li\u003e\n\u003cli\u003eDeep DuraCase nitride treatment that is durability and wear enhancing\u003c\/li\u003e\n\u003cli\u003eLarge True Form fillet radii in all journals\u003c\/li\u003e\n\u003cli\u003eKeyed Shear Proof timing gear fit\u003c\/li\u003e\n\u003cli\u003eDrilled rod journals for reduced inertia and ease of balance\u003c\/li\u003e\n\u003cli\u003eStock 3.898” stroke with OEM journal diameters and width\u003c\/li\u003e\n\u003cli\u003eMachined from 4340, through hardened steel\u003c\/li\u003e\n\u003cli\u003eDual keyed damper fit\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWill accept OEM post and flange bolts\u003c\/li\u003e\n\u003cli\u003eMachined to accept OEM flywheels \/ flexplates\u003c\/li\u003e\n\u003cli\u003eAll journals are polished to a 6Ra or finer finish\u003c\/li\u003e\n\u003cli\u003eMain bearing oil holes are machined with lead-ins for enhanced cold start oil flow to rod journals\u003c\/li\u003e\n\u003cli\u003eGM timing gears are available\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wagler Competition Products","offers":[{"title":"Default Title","offer_id":50528534593651,"sku":"D333M81-CS","price":1864.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/5975\/1539\/files\/image_37.png?v=1790274732","url":"https:\/\/checkout.waglercompetition.com\/products\/callies-durastar-duramax-crankshaft","provider":"Wagler Competition Products","version":"1.0","type":"link"}