Eagle Chevrolet BB 4.375in Stroke Int Balance Center Counterweighted Forged 4340 Steel Crankshaft

Eagle forged 4340 steel cranks feature a non-twist forging, .125" fillet radiuses for superior strength (chamfered/narrowed bearings required), nitrided surface, & micropolished to < 2 RA. Intended for demanding applications. Made from AISI/ASME certified 4340 steel with multi-stage heat treatment. Eagle connecting rods and cranks are designed and manufactured to their specifications, using certified steel, multi-stage heat treating, sonic testing, magna-fluxing, and x-ray for reliability. Offers a comprehensive selection of connecting rods, crankshafts, and balanced rotating assemblies. Provides premium forged 4340 crankshafts and H-Beam rods for performance, and cast steel cranks and I-Beam rods for weekend racers. Features center counterweights for improved high RPM stability and strength. Eagle maintains quality, using state-of-the-art equipment and skilled craftsmen. All parts are thoroughly inspected and quality controlled. With over 75,000 sq. ft. of production and inventory in the U.S.A., most orders ship within 24 hours. Sales staff has over 85 years of combined experience. Crankshaft must be balanced to match specific rods and pistons.