Eagle B18421100 Balanced Rotating Assembly Kit Chevy Big Block Bore - 454 4.350

The Eagle B18421100 is a complete balanced rotating assembly kit designed for Chevrolet 454 big block engines with a +.100 overbore (4.350" bore). This comprehensive performance kit includes all the essential components needed to build a powerful and reliable big block engine capable of handling serious horsepower.

Complete Kit Includes:

• 4.250" forged 4140 steel crankshaft with superior strength and durability
• 6.385" forged 4340 steel I-beam connecting rods for high-performance applications
• 7/16" ARP 8740 rod bolts providing exceptional clamping force and reliability
• Forged 4032 aluminum ICON pistons with 23cc dome design for increased compression
• 4.350" bore pistons (.100 over standard bore)
• Plasma-moly file-fit piston rings for precise gap adjustment
• King XP Series rod and main bearings for reduced friction and improved durability

This assembly is professionally balanced by Eagle, indicated by the "B" prefix in the part number, meaning it requires no additional balancing work before installation. The forged steel crankshaft and connecting rods provide the strength needed for high-performance and racing applications, while the domed pistons help achieve higher compression ratios for increased power output. Ideal for street/strip builds, performance restorations, and serious big block Chevy enthusiasts looking for a complete, ready-to-install rotating assembly solution.