Eagle B42100060 Oldsmobile Balanced Rotating Assembly Stroker Kit - 455 467ci

The Eagle B42100060 is a balanced street and strip rotating assembly designed for Oldsmobile 455 engines, transforming them into powerful 467 cubic inch strokers with 4.185-inch bore. This complete kit delivers exceptional performance for engines producing up to 500 horsepower while maintaining excellent value and reliability.

Complete Assembly Includes:

• 4.250-inch stroke cast steel crankshaft with external balance and 2-piece rear main seal
• 6.735-inch Eagle H-Beam connecting rods with 7/16-inch ARP 8740 bolts
• Forged 4032 aluminum SRP flat top pistons with -5cc volume at 4.185-inch bore
• Plasma-moly file-fit piston rings for optimal sealing
• King SI performance rod and main bearings

Key Specifications:

• Displacement: 467 cubic inches at 4.185-inch bore
• Stroke: 4.250 inches
• Rod length: 6.735 inches
• Rod journal: 2.497 inches
• Main journal: 3.000 inches
• Balance: External (requires matching flexplate and harmonic balancer)

This assembly is factory-balanced by Eagle and requires no additional balancing before installation. The part number begins with "B" indicating it's ready to install after proper machine shop preparation. The forged pistons feature flat top design with valve reliefs, making this kit suitable for street performance and strip applications.