Eagle B1612804057 Balanced Rotating Assembly Bore - 8-Cylinder 4.040

The Eagle B1612804057 is a complete balanced rotating assembly designed for 8-cylinder engine builds with a 4.040" bore size. This assembly is precision-balanced by Eagle and requires no additional balancing before installation, saving time and machine shop costs.

Complete Assembly Includes:

• 3.850" stroke cast steel crankshaft with .092" fillet radiuses for improved strength
• 5.956" center-to-center forged I-beam connecting rods
• 3/8" ARP 8740 capscrew rod bolts for reliable clamping force
• Forged 4032 aluminum Mahle pistons with -26cc inverted dome design
• Complete piston ring set
• Rod and main bearings

Eagle rotating assemblies are manufactured using certified steel and undergo rigorous quality control including magnafluxing inspection. The -26cc inverted dome piston design provides excellent combustion chamber efficiency and allows for precise compression ratio tuning. The balanced assembly designation (part numbers beginning with "B") indicates this kit has been professionally balanced by Eagle and is ready for installation.

This assembly is ideal for street performance and street/strip applications, offering reliable performance at an affordable price point. The cast steel crankshaft features improved fillet radiuses over OE cranks for enhanced durability, while the forged I-beam rods with ARP hardware provide strength for engines producing under 500 horsepower.