Eagle Oldsmobile 455 4.250in Crank 6.735in H-Beam -5cc Flat Top 4.155in Pistons Balanced Assembly

If you're building a street-driven Oldsmobile 455 engine that needs to handle pump gas and run naturally aspirated, this balanced rotating assembly from Eagle is a solid foundation. It includes a 4.250-inch stroke cast crankshaft, 6.735-inch H-beam connecting rods with ARP 7/16-inch bolts, and forged 4032 SRP pistons. This assembly is balanced and ready to be installed, making it a convenient choice for your engine build.

The forged SRP pistons feature a -5cc flat top design, which is ideal for achieving a good compression ratio on pump gas with typical Oldsmobile 455 cylinder heads. They come with plasma-moly file-fit rings, giving you flexibility during installation to achieve a proper seal. King SI rod and main bearings are also included, providing reliable lubrication and wear protection for the crankshaft and connecting rods. The H-beam connecting rods are well-known for their strength and are a popular choice for street performance applications.

This assembly is balanced from the factory, which saves you a significant step and cost in your engine build process. It's important to note that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and break-in procedures to ensure the longevity of your new engine.