Eagle Chevy 400 3.750in Crank 5.700in I-Beam Rods -20cc 4.155in Pistons Balanced Assembly

If you're building a street-driven Chevy 400 engine that will run on pump gas and stay naturally aspirated, this balanced rotating assembly from Eagle is a solid foundation. It includes all the key components you need to get your short block assembled and ready for the rest of your build. This assembly is designed to handle the demands of everyday driving while still offering good performance.

At the heart of this assembly is a 3.750-inch cast crankshaft, paired with 5.700-inch I-beam connecting rods. These rods are equipped with 3/8-inch ARP 8740 bolts, known for their strength and reliability in performance applications. The pistons are forged 4032 aluminum from Mahle, featuring an inverted dome design with a -20cc volume and a 4.155-inch bore size. They come with plasma-moly standard gap rings, which help ensure a good seal and efficient combustion. For the bottom end, you'll find King rod and main bearings, chosen for their durability and performance characteristics.

This rotating assembly comes balanced from Eagle, saving you a significant step and ensuring your engine runs smoothly. It also includes a damper and a flexplate, making it a more complete package for your engine build. Please note that this assembly is not CARB approved and cannot be shipped to California. It's a well-built option for enthusiasts looking to put together a reliable pump gas street engine.