461ci Competition Rotating Assembly Kit

The Butler EAG-51500-4155 is a competition rotating assembly kit engineered for enhanced engine performance. This kit is specifically designed for 400 blocks, offering a solution for engine builders looking to upgrade their powerplants. The assembly includes a Mahle ring set with a 4.155" bore, compatible with 4.160" rings. It features a new forged crankshaft with a 4.250" stroke. This combination results in a 461 cubic inch displacement, providing a significant increase in engine capacity and potential power output. The kit also includes Mahle -6cc Flat Top Pistons, contributing to the assembly's overall performance characteristics. Eagle Specialty competition rotating assemblies are known for consisting of name-brand quality components offered at an affordable price point, making them a viable option for a wide range of engine builds.