Eagle B13052L04053 Street Performance Rotating Assembly Small Block Chevy - 383ci

The Eagle B13052L04053 is a factory-balanced street performance rotating assembly designed for small block Chevy engines. This complete rotating assembly kit provides everything needed for a reliable engine build suitable for street and strip applications producing up to 500 horsepower.

Complete Assembly Includes:

• Eagle cast steel crankshaft with 3.750-inch stroke
• Eagle SIR (Super I-Beam Rod) forged 5140 steel connecting rods with 5.700-inch center-to-center length
• 3/8-inch ARP 8740 rod bolts
• Hypereutectic aluminum pistons with .040-inch overbore (4.040-inch bore)
• Plasma-moly piston rings
• Clevite or King bearing sets (rod and main bearings)

Key Specifications:

• Displacement: Approximately 383 cubic inches
• Stroke: 3.750 inches
• Bore: 4.040 inches (.040-inch oversize)
• Rod Length: 5.700 inches center-to-center
• Balance: Internally balanced (factory balanced by Eagle - no additional balancing required)
• Application: 1986-up Small Block Chevy with 1-piece rear main seal

Eagle rotating assemblies are test-fitted in-house to ensure proper component compatibility and require no additional balancing work. The cast steel crankshaft features larger fillet radiuses for improved strength over stock cranks, while the hypereutectic pistons provide excellent durability for street performance applications. This assembly is designed for internal balance and requires a neutral flexplate and harmonic balancer (sold separately).