Olds 455 Rotating Assy. 495 .060

The Olds 455 Rotating Assy. 495 .060 by EAGLE is a complete rotating assembly designed for enthusiasts and machine shops looking to rebuild or upgrade classic Oldsmobile 455 big-block engines. This pre-assembled crankshaft and internal rotating components package eliminates the need to source, balance, and assemble individual parts separately, significantly reducing downtime and potential assembly errors.

The assembly features a 495 cubic-inch displacement with a .060 overbore specification, allowing for larger piston and ring packages while maintaining the original block architecture. It is dynamically balanced to OEM specifications, ensuring smooth operation across the entire RPM band and reducing vibration that can lead to bearing wear and drivetrain stress. Premium-grade nodular iron or forged internals are used to withstand the thermal and mechanical loads generated by high-compression combustion.

This rotating assembly is ideal for 1968–1976 Oldsmobile vehicles equipped with 455 blocks, including muscle car platforms such as the 442, Cutlass, and Delta 88. It provides a reliable foundation for power generation, whether restoring a vintage muscle car or preparing a drag racing platform. Installation requires standard engine rebuilding tools and expertise.