Eagle Chevy 400 3.875in Crank 6.000in H-Beam Stroker Rods -10.8cc 4.155in Pistons Balanced Assembly

If you're building a serious competition engine for your Chevy 400, this balanced rotating assembly from Eagle is a solid choice. It's designed to handle the demands of extreme use, whether you're running exotic fuels, heavy nitrous, or high boost applications. This assembly includes everything you need to get your engine's core rotating components sorted, all balanced and ready for installation.

At the heart of this assembly is a forged 4340 steel crankshaft with a 3.875-inch stroke, giving you that extra displacement for more power. Paired with it are 6.000-inch H-beam connecting rods, built for extreme duty and featuring 7/16-inch ARP 2000 bolts for a strong, reliable connection. The pistons are forged 2618 JE units, measuring 4.155 inches in diameter with a -10.8cc dome to achieve a specific compression ratio. They come complete with plasma-moly file-fit rings, which allow for precise ring gap setting to match your engine's build.

To ensure smooth operation and durability, this assembly includes King XP rod and main bearings. Everything in this kit is balanced, meaning the crankshaft, rods, pistons, rings, and bearings have been precisely weighted and matched to minimize vibration and reduce stress on your engine. This balanced assembly is a critical step for building a high-performance engine that can withstand the rigors of competition.