Eagle Oldsmobile 455 4.500in Crank 7.100in H-Beam -22cc Inv Dome 4.155in Pistons Balanced Assembly

If you're rebuilding the heart of your Oldsmobile 455 and want a solid foundation for a street-driven machine, this balanced rotating assembly from Eagle is a smart choice. It bundles together the essential rotating components – crankshaft, connecting rods, pistons, rings, and bearings – all balanced as a set to ensure smooth operation and longevity in your engine. This assembly is specifically designed for pump gas applications and naturally aspirated setups, making it ideal for many street performance builds.

At the core of this assembly is a 4.500-inch cast crankshaft, paired with robust 7.100-inch H-beam connecting rods. These rods are secured with strong 7/16-inch ARP 8740 bolts, known for their reliability under stress. The pistons are forged 4032 aluminum from Mahle, featuring a -22cc inverted dome design and a 4.155-inch bore size, which helps achieve a desired compression ratio for pump gas. They come complete with plasma-moly file-fit rings, offering good sealing and durability. To top it off, King SI series rod and main bearings are included, providing dependable lubrication and wear protection for these critical rotating parts.

This assembly comes balanced from the factory, which is a crucial step for reducing engine vibration and improving overall performance and lifespan. It's important to note that this assembly is not CARB approved and cannot be shipped to California due to emissions regulations. Always refer to the manufacturer's installation instructions for proper assembly and break-in procedures to get the most out of your new rotating assembly.