Callies Dragonslayer Bbc 4.500 Stroke, 2.750 Mains, 2.200 Pins, 434 BBQ42B-DS
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DragonSlayer crankshaftsare made in the U.S.A. forAmerican Racers. With anexpanded line of partnumbers, the DragonSlayer israpidly setting the standardby which other Sportsmancrankshafts are measured.
These shafts are machinedto the tolerances demanded bytoday's high performanceengine builder. Roundness andtaper are held to less than.0003 on all rod and mainjournal diameters. Our finalpolishing procedures produceexcellent load carryingsurfaces that ensure extendedbearing life and trouble freeoperation.
EachDragonSlayer features theCallies Ultra-Case nitridetreatment. This heattreatment method produces adeep case that enhancesstrength while creating anextremely hard load bearingwear surface. The Ultra-Caseprocess generates a layer ofhardened steel deep enough tomaintain its integrity evenafter a -.010 regrind.
Callies heat treat expertisecombined with our high puritypremium 4340 forging producestrength of unparalleledvalue. All DragonSlayers areproduced with standard Chevyrod journal diameters andwidths for SBC, BBC, LS1, andMopar applications.