Eagle Chevy 400 350 Mains 3.750in Crank 6.000in I-Beam Rods -16cc 4.125in Pistons Rotating Assembly

If you're building a high-performance Chevy 400 engine for naturally-aspirated racing, this Eagle Pro Street rotating assembly is a solid foundation. It's designed to handle the demands of the track, giving you the power and reliability you need when every component counts.

This assembly starts with a 3.750-inch forged 4140 crankshaft featuring 350 main journal sizes, which is a common and well-supported configuration. Paired with it are 6.000-inch I-beam connecting rods made from strong 4340 steel, secured with 7/16-inch ARP 8740 bolts for dependable strength under load. The pistons are forged 4132 Mahle units with an inverted dome design, measuring 4.125 inches in diameter and featuring a -16cc volume, which helps achieve your desired compression ratio. The assembly also includes plasma-moly file-fit piston rings, allowing for precise gap setting to match your engine's bore and intended use, along with King XP rod and main bearings for smooth operation and durability.

This rotating assembly is a comprehensive package for serious engine builders. Please note that this assembly is not CARB approved and cannot be shipped to California. Always refer to manufacturer instructions for proper installation and break-in procedures to ensure optimal performance and longevity.