Eagle 158044090 Big Block Chevy Rotating Assembly 4.250" Stroke 4.090" Bore

The Eagle 158044090 is a complete rotating assembly designed for Big Block Chevy engines. This comprehensive kit provides everything needed to build a reliable street or street/strip performance engine.

Complete Assembly Includes:

• 4.250" cast steel crankshaft with improved fillet radiuses for enhanced strength
• 6.700" I-beam connecting rods with 7/16" ARP 8740 bolts
• Forged 4032 aluminum pistons with -7cc flat top design
• 4.090" bore pistons for precise fitment
• Plasma-moly piston rings for superior sealing
• King SI series rod and main bearings

Eagle's cast steel crankshafts feature .092" fillet radiuses for improved strength and rigidity over OEM components. The forged I-beam connecting rods are equipped with ARP 8740 bolts and bushed for full-floating piston pins. This assembly is ideal for naturally aspirated street engines producing under 500 horsepower and offers an excellent balance of performance, reliability, and value.

Note: This assembly requires professional balancing by a qualified machine shop before installation unless specified as pre-balanced.