Eagle Chevy 400 350 Mains 3.750in Crank 6.000in H-Beam -16cc 4.165in Pistons Rotating Assembly

If you're building a high-performance Chevy 400 engine, this rotating assembly from Eagle is a solid foundation. It's designed to handle the stresses of racing, including applications using nitrous oxide or forced induction. This assembly includes a forged 4340 crankshaft with a 3.750-inch stroke, paired with 6.000-inch H-beam connecting rods featuring 7/16-inch ARP 8740 bolts. The pistons are forged 4032 MAHLE units with an inverted dome design, measuring 4.165 inches in bore size and featuring -16cc volume. This setup also comes with plasma-moly file-fit rings and King XP rod and main bearings, ensuring a well-matched and durable internal engine package.

Eagle has put together a comprehensive kit here, using strong materials like forged 4340 steel for the crankshaft and connecting rods. The 4032 forged aluminum pistons are a good choice for high-performance street and strip applications, offering a good balance of strength and lighter weight compared to cast pistons. The inclusion of ARP fasteners for the connecting rods means you're getting reliable clamping force, which is critical under high RPM and load. The King XP bearings are known for their performance capabilities, helping to manage the critical clearances within your engine. This assembly is intended for use with 350 mains, making it adaptable to a range of Chevy small-block configurations.

When assembling an engine of this caliber, attention to detail is key. Ensure all clearances are checked according to the manufacturer's specifications for the pistons, rings, and bearings. This rotating assembly is a significant step towards a powerful and reliable engine build, but remember that other components like cylinder heads, camshaft, and oiling system must also be chosen to complement its performance potential. Please note that this assembly is not CARB approved and cannot be shipped to California.