Eagle B13021L03053 Street and Strip Rotating Assembly Small Block Chevy 355ci

The Eagle B13021L03053 is a complete Street and Strip rotating assembly designed for small block Chevrolet engines with 1-piece rear main seals. This balanced assembly delivers a displacement of 355 cubic inches (5.8L) and provides reliable performance for engines producing up to 500 horsepower.

Key Specifications:

• Bore: 4.030 inches
• Stroke: 3.480 inches
• Connecting Rod Length: 5.700 inches (center-to-center)
• Displacement: 355 cubic inches (5.8L)
• Factory balanced - ready to install with no additional balancing required
• 1-piece rear main seal design

Complete Assembly Includes:

• Eagle cast steel crankshaft with 3.480-inch stroke
• Eagle "SIR" I-beam forged 5140 steel connecting rods
• Forged aluminum pistons
• File-fit piston rings
• Rod and main bearings (Clevite or King)
• 153-tooth flexplate for automatic transmission applications

This assembly features name-brand quality components at an affordable price point. The "B" prefix in the part number indicates this is a factory-balanced assembly from Eagle, requiring no additional balancing before installation. Eagle's Street and Strip rotating assemblies are designed for 1986-and-up small block Chevy engines, offering the perfect balance of strength, performance, and reliability for street and strip applications.