Eagle B627643780 LS Balanced Rotating Assembly 3.800" Bore 58T

The Eagle B627643780 is a balanced rotating assembly designed for GM LS engines with 58-tooth reluctor systems. This complete kit provides all the essential internal components needed for a high-performance engine build, pre-balanced and ready to install.

Key Components Include:

• Forged 4140 steel crankshaft with 4.000" stroke and 58-tooth reluctor
• 6.125" forged 4340 steel I-beam connecting rods with 7/16" ARP 8740 rod bolts
• Forged 4032 aluminum pistons designed for 3.800" bore
• Performance piston rings
• High-quality rod and main bearings

Factory Balanced: The "B" prefix in the part number indicates this assembly is professionally balanced by Eagle, eliminating the need for additional balancing work and allowing for direct installation.

Application: Designed for GM LS engines including LS2, LQ4, LQ9, and similar platforms with 58-tooth reluctor systems. This assembly is suitable for street performance and moderate racing applications producing up to 600+ horsepower.

Eagle Specialty Products is known for manufacturing high-strength connecting rods and crankshafts for racing and performance engines, with a reputation for quality and reliability in the performance automotive industry.