Eagle B13013E000 Balanced Street Strip Rotating Assembly Chevy Small Block - 377ci

The Eagle B13013E000 is a balanced street and strip rotating assembly featuring a 3.750" cast crankshaft, 5.700" I-beam connecting rods with 3/8" ARP 8740 bolts, forged 4032 ICON -10cc inverted dome 4.000" pistons, plasma-moly file-fit rings, and King SI rod and main bearings. This rotating assembly offers the perfect balance of strength, performance, reliability, and affordability, and includes a cast steel crankshaft, Eagle "SIR" I-beam connecting rods, hypereutectic pistons, rings, and bearings.

Key Features:

• Pre-balanced assembly - ready to install with no additional balancing required
• Suitable for use up to 500 horsepower
• 3.750" stroke for 377 cubic inch displacement with 4.000" bore
• Forged 4032 aluminum ICON pistons with -10cc inverted dome
• Eagle SIR I-beam connecting rods with ARP 8740 bolts
• Cast steel crankshaft for excellent strength and durability
• Plasma-moly file-fit piston rings
• King SI performance rod and main bearings
• Test-fitted in house to ensure everything works well together

This complete rotating assembly is designed for Chevy small block 350 engines and provides an affordable path to increased displacement and performance. The "B" prefix in the part number indicates this assembly has been professionally balanced by Eagle, eliminating the need for additional machine shop balancing work. Ideal for street performance and strip applications where reliability and power are both priorities.