Eagle Chevy 454 4.000in Crank 6.135in I-Beam Rods 43cc Dome 4.280in Pistons Balanced Assembly

If you're building a high-performance naturally-aspirated 454 big-block Chevy for racing, a balanced rotating assembly like this one from Eagle is a smart way to start. It bundles all the critical internal engine components that work together to make power, ensuring they're matched and balanced from the factory, which saves you time and potential headaches during assembly.

This assembly includes a forged 4340 steel crankshaft with a 4.000-inch stroke, paired with 6.135-inch long I-beam connecting rods made from the same tough 4340 steel. These rods are secured with 7/16-inch ARP 8740 bolts, known for their strength and reliability under high stress. The pistons are forged 2618 aluminum from ICON, featuring a 43cc dome and a 4.280-inch bore size, designed to work with the crank and rods for optimal compression in a naturally-aspirated setup. It also comes with plasma-moly file-fit piston rings and King XP rod and main bearings, which are well-regarded for their performance and durability in demanding applications.

Having the entire rotating assembly balanced as a unit is a significant advantage. It means the crankshaft, connecting rods, pistons, rings, bearings, and harmonic balancer (if included, check packaging) are precisely weighted and counterbalanced to minimize vibration and reduce stress on your engine block and main bearings. This balanced assembly is intended for racing use and is not CARB approved, so it cannot be shipped to California. Always refer to manufacturer instructions for proper installation and break-in procedures.