Eagle Chevy 396 4.000in Crank 6.135in I-Beam Rods 4.185in Pistons 168 Tooth FP Balanced Assembly

Eagle has built a solid reputation for making strong, reliable performance engine components, and this balanced rotating assembly for Chevy 396 engines is a prime example. If you're rebuilding or upgrading your big-block Chevy, this assembly is designed to handle the power you're looking for. It includes a 4.000-inch stroke crankshaft, 6.135-inch I-beam connecting rods, and 4.185-inch diameter pistons, all precisely balanced to reduce vibration and ensure smooth operation.

This assembly is fully balanced at the factory, meaning the crankshaft, rods, and pistons are weighted and matched to minimize imbalance. This is a critical step for engine longevity and performance, especially in higher-RPM applications. The I-beam connecting rods are a well-built choice for many performance builds, offering a good balance of strength and weight. The 4.000-inch stroke crankshaft is a common choice for achieving the 396 cubic inch displacement with the specified bore size, providing a good foundation for a powerful engine.

When undertaking a significant engine build like this, it's important to ensure all supporting components are up to the task. This balanced rotating assembly is a major step towards a complete engine, but remember to factor in the cost and availability of other necessary parts like bearings, rings, gaskets, and potentially machine work. Always refer to the manufacturer's installation instructions for specific details and recommendations.